92146A623 | 18-8 Stainless Steel Split Lock Washer

Filter by

System of Measurement

Screw Size

Material

Washer Type

Finish

Zinc Yellow-Chromate Plated

Thickness

Performance

Specifications Met

Tooth Location

Internal and External

Hardness

Rockwell C40 to Rockwell C50

DFARS Specialty Metals

Overall Height

RoHS

REACH

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

Export Control Classification Number (ECCN)

Length

Color

Serration Location

Military Specification

Height

Number of Waves

Container Type

Tab Width

1,659 Products

Split Lock Washers

Stop nuts and screws from loosening due to mild vibration. As you tighten, the uneven ends bite into the nut or screw so it won't back out. While they're not as vibration resistant as other lock washers, they are a great fit for electrical panels, light fixtures, and other light duty assemblies. Split lock washers are not reusable, and they only work with fasteners that have right-hand threads.

18-8 Stainless Steel—The choice for wet and outdoor environments, these washers won't rust when exposed to moisture. However, they can't hold up to the harsh chemicals that 316 stainless steel can.

Black-Oxide 18-8 Stainless Steel—Typically chosen for their appearance, these washers have a dark, matte coating to create a finished look. They won't rust in wet and outdoor environments, but can't hold up to harsh chemicals as well as 316 stainless steel.

Highly Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these washers won't degrade when exposed to harsh weather, salt water, and most chemicals.

Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.

Zinc-Yellow-Chromate-Plated Steel—With the same corrosion resistance as zinc-plated steel, these withstand occasional exposure to moisture.

Black-Oxide Steel—Typically chosen for their appearance, these washers have a dark, matte coating that creates a finished look. They offer minimal corrosion resistance, so they're best for dry environments.

Blue-Dyed Steel—These metric-sized washers have a distinctive blue color, so you can easily tell them apart from inch washers. The coating provides only minimal corrosion resistance, so these washers are best for dry environments.

Steel—Best for dry environments since moisture will cause these washers to rust.

Corrosion-Resistant Galvanized Steel—These washers combine the strength of steel with the rust resistance of stainless steel. They're an alternative to 18-8 stainless steel in wet and outdoor environments, but they won't hold up to salt water and chemicals.

Highly Corrosion-Resistant Zinc-Flake-Coated Steel—With 40 times the corrosion resistance of zinc-plated steel, these withstand rust as well as 316 stainless steel. They have been tested to extreme standards, including 1,000 hours of salt spray. They are similar to Magni-coated washers.

Aluminum—One-third the weight of steel, these washers are commonly used for assemblies that have weight limits. They're an alternative to stainless steel for rust resistance, but aren't as strong.

Highly Corrosion-Resistant Silicon Bronze—The choice for marine environments, these washers won't rust or deteriorate when submerged in salt water. They resist corrosion as well as 316 stainless steel, but are not quite as strong.

High-Strength Highly Corrosion-Resistant K500 Nickel—More than three times as strong as 316 stainless steel, and with superior rust resistance to withstand prolonged exposure to salt water and acids. These washers are often used in the oil and gas industries. Also known as Monel.

	For Screw Size	ID	OD	Thk.	For Fastener Strength Grade/Class	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel



		No. 0	0.062"	0.137"	0.015"	—	—	100	92146A510	00000


		No. 0	0.062"	0.137"	0.015"	—	—	1,000	92146A001	00000
		No. 1	0.075"	0.150"	0.015"	—	—	100	92146A515	0000
		No. 1	0.075"	0.150"	0.015"	—	—	1,000	92146A002	00000
		No. 2	0.094"	0.172"	0.020"	—	ASME B18.21.1	100	92146A520	0000
		No. 2	0.094"	0.172"	0.020"	—	ASME B18.21.1	1,000	92146A003	00000
		No. 3	0.107"	0.195"	0.025"	—	ASME B18.21.1	100	92146A525	0000
		No. 3	0.107"	0.195"	0.025"	—	ASME B18.21.1	1,000	92146A004	00000
		No. 4	0.120"	0.209"	0.025"	—	ASME B18.21.1	100	92146A530	0000
		No. 4	0.120"	0.209"	0.025"	—	ASME B18.21.1	1,000	92146A005	00000
		No. 4	0.120"	0.223"	0.031"	—	ASME B18.21.1	100	91007A614	0000


		No. 5	0.133"	0.236"	0.031"	—	ASME B18.21.1	100	92146A535	0000
		No. 5	0.133"	0.236"	0.031"	—	ASME B18.21.1	1,000	92146A006	00000
		No. 6	0.148"	0.250"	0.031"	—	ASME B18.21.1	100	92146A540	0000
		No. 6	0.148"	0.250"	0.031"	—	ASME B18.21.1	1,000	92146A007	00000
		No. 6	0.148"	0.266"	0.040"	—	ASME B18.21.1	100	91007A619	0000
		No. 8	0.174"	0.293"	0.040"	—	ASME B18.21.1	100	92146A545	0000
		No. 8	0.174"	0.293"	0.040"	—	ASME B18.21.1	1,000	92146A009	00000
		No. 8	0.174"	0.307"	0.047"	—	ASME B18.21.1	100	91007A623	0000
		No. 10	0.200"	0.334"	0.047"	—	ASME B18.21.1	100	92146A550	0000
		No. 10	0.200"	0.334"	0.047"	—	ASME B18.21.1	1,000	92146A011	00000


		No. 10	0.200"	0.350"	0.056"	—	ASME B18.21.1	100	91007A628	0000
		No. 12	0.227"	0.377"	0.056"	—	ASME B18.21.1	100	92146A013	0000
		1/4"	0.260"	0.487"	0.062"	—	ASME B18.21.1	100	92146A029	0000
		1/4"	0.260"	0.489"	0.077"	—	ASME B18.21.1	50	91007A632	0000
		5/16"	0.322"	0.583"	0.078"	—	ASME B18.21.1	100	92146A030	0000
		5/16"	0.322"	0.594"	0.097"	—	ASME B18.21.1	50	91007A636	00000
		3/8"	0.385"	0.680"	0.094"	—	ASME B18.21.1	100	92146A031	0000
		3/8"	0.385"	0.688"	0.115"	—	ASME B18.21.1	25	91007A641	0000
		7/16"	0.450"	0.776"	0.109"	—	ASME B18.21.1	50	92146A032	0000
		1/2"	0.512"	0.869"	0.125"	—	ASME B18.21.1	50	92146A033	0000


		1/2"	0.512"	0.879"	0.151"	—	ASME B18.21.1	10	91007A652	0000
		9/16"	0.574"	0.965"	0.141"	—	ASME B18.21.1	25	92146A066	0000
		5/8"	0.641"	1.073"	0.156"	—	ASME B18.21.1	25	92146A035	0000
		5/8"	0.641"	1.087"	0.189"	—	ASME B18.21.1	5	91007A676	0000
		3/4"	0.766"	1.265"	0.188"	—	ASME B18.21.1	10	92146A036	0000
		3/4"	0.766"	1.285"	0.226"	—	ASME B18.21.1	1	91007A681	0000
		7/8"	0.894"	1.459"	0.219"	—	ASME B18.21.1	5	92146A037	0000
		1"	1.024"	1.656"	0.250"	—	ASME B18.21.1	5	92146A038	0000
		1 1/8"	1.153"	1.847"	0.281"	—	ASME B18.21.1	1	92146A039	0000
		1 1/4"	1.280"	2.036"	0.312"	—	ASME B18.21.1	1	92146A040	0000


		1 3/8"	1.408"	2.219"	0.344"	—	ASME B18.21.1	1	92146A050	0000
		1 1/2"	1.534"	2.419"	0.375"	—	ASME B18.21.1	1	92146A041	0000
		1 5/8"	1.663"	2.553"	0.389"	—	ASME B18.21.1	1	92146A611	0000
		1 3/4"	1.789"	2.679"	0.389"	—	ASME B18.21.1	1	92146A043	00000
		1 7/8"	1.914"	2.811"	0.422"	—	ASME B18.21.1	1	92146A612	00000
		2"	2.039"	2.936"	0.422"	—	ASME B18.21.1	1	92146A049	00000
		2 1/4"	2.293"	3.221"	0.440"	—	ASME B18.21.1	1	92146A613	00000
		2 1/2"	2.543"	3.471"	0.440"	—	ASME B18.21.1	1	92146A614	00000
		M2	2.4 mm	4.4 mm	0.4 mm to 0.6 mm	—	DIN 127B	100	92148A050	0000
		M2.5	2.9 mm	5.1 mm	0.5 mm to 0.7 mm	—	DIN 127B	100	92148A070	0000

M2.6	3.0 mm	5.2 mm	0.5 mm to 0.7 mm	—	DIN 127B	100	92148A110	0000
M3	3.4 mm	6.2 mm	0.7 mm to 0.9 mm	—	DIN 127B	100	92148A150	0000
M3.5	3.9 mm	6.7 mm	0.7 mm to 0.9 mm	—	DIN 127B	100	92148A155	0000
M4	4.4 mm	7.6 mm	0.8 mm to 1.0 mm	—	DIN 127B	100	92148A160	0000
M5	5.4 mm	9.2 mm	1.1 mm to 1.3 mm	—	DIN 127B	100	92148A170	0000
M6	6.5 mm	11.8 mm	1.5 mm to 1.7 mm	—	DIN 127B	100	92148A180	0000
M7	7.5 mm	12.8 mm	1.5 mm to 1.7 mm	—	DIN 127B	50	92148A311	0000
M8	8.5 mm	14.8 mm	1.9 mm to 2.1 mm	—	DIN 127B	100	92148A200	00000
M10	10.7 mm	18.1 mm	2.0 mm to 2.4 mm	—	DIN 127B	100	92148A210	00000
M12	12.7 mm	21.1 mm	2.3 mm to 2.7 mm	—	DIN 127B	50	92148A214	00000
M14	14.7 mm	24.1 mm	2.8 mm to 3.2 mm	—	DIN 127B	25	92148A221	00000
M16	17.0 mm	27.4 mm	3.3 mm to 3.7 mm	—	DIN 127B	25	92148A241	00000
M18	19.0 mm	29.4 mm	3.3 mm to 3.7 mm	—	DIN 127B	10	92148A251	0000
M20	21.2 mm	33.6 mm	3.8 mm to 4.2 mm	—	DIN 127B	10	92148A261	0000
M22	22.5 mm	35.9 mm	3.8 mm to 4.2 mm	—	DIN 127B	5	92148A111	0000
M24	25.5 mm	40.0 mm	4.8 mm to 5.2 mm	—	DIN 127B	10	92148A271	00000
M27	27.5 mm	43.0 mm	4.8 mm to 5.2 mm	—	DIN 127B	5	92148A112	00000
M30	31.7 mm	48.2 mm	5.8 mm to 6.2 mm	—	DIN 127B	1	92148A281	0000
M36	37.7 mm	58.2 mm	5.8 mm to 6.2 mm	—	DIN 127B	1	92148A291	0000

Black-Oxide 18-8 Stainless Steel



		No. 2	0.094"	0.172"	0.020"	—	ASME B18.21.1	100	92146A615	0000


		No. 4	0.120"	0.209"	0.025"	—	ASME B18.21.1	100	92146A616	0000
		No. 6	0.148"	0.250"	0.031"	—	ASME B18.21.1	100	92146A617	0000
		No. 8	0.174"	0.293"	0.040"	—	ASME B18.21.1	100	92146A618	0000
		No. 10	0.200"	0.334"	0.047"	—	ASME B18.21.1	100	92146A619	0000
		1/4"	0.260"	0.487"	0.062"	—	ASME B18.21.1	100	92146A621	0000
		5/16"	0.322"	0.583"	0.078"	—	ASME B18.21.1	100	92146A622	0000
		3/8"	0.385"	0.680"	0.094"	—	ASME B18.21.1	50	92146A623	0000
		18-8 Stainless Steel Split Lock Washer, Black-Oxide, for 3/8" Screw Size, 0.385" ID, 0.680" OD Product Detail QuantityPack of 50In stock Select a compatible file type: Parasolid Compatible Products for This Lock Washer
		1/2"	0.512"	0.869"	0.125"	—	ASME B18.21.1	25	92146A624	0000
		M2	2.4 mm	4.4 mm	0.4 mm to 0.6 mm	—	DIN 127B	10	92148A331	0000
		M2.5	2.9 mm	5.1 mm	0.5 mm to 0.7 mm	—	DIN 127B	10	92148A332	0000


		M3	3.4 mm	6.2 mm	0.7 mm to 0.9 mm	—	DIN 127B	10	92148A333	0000
		M5	5.4 mm	9.2 mm	1.1 mm to 1.3 mm	—	DIN 127B	10	92148A334	0000
		M6	6.5 mm	11.8 mm	1.5 mm to 1.7 mm	—	DIN 127B	10	92148A335	0000
		M8	8.5 mm	14.8 mm	1.9 mm to 2.1 mm	—	DIN 127B	10	92148A336	0000
		M10	10.7 mm	18.1 mm	2.0 mm to 2.4 mm	—	DIN 127B	10	92148A337	0000
		M12	12.7 mm	21.1 mm	2.3 mm to 2.7 mm	—	DIN 127B	10	92148A338	0000
		M16	17.0 mm	27.4 mm	3.3 mm to 3.7 mm	—	DIN 127B	10	92148A339	0000
		M20	21.2 mm	33.6 mm	3.8 mm to 4.2 mm	—	DIN 127B	10	92148A341	00000


		Highly Corrosion-Resistant 316 Stainless Steel



				No. 0	0.062"	0.137"	0.015"	—	—	100	92147A111	0000


				No. 2	0.094"	0.172"	0.020"	—	ASME B18.21.1	100	92147A410	0000
				No. 2	0.094"	0.172"	0.020"	—	ASME B18.21.1	1,000	92147A003	00000
				No. 3	0.107"	0.195"	0.025"	—	ASME B18.21.1	100	92147A210	0000
				No. 4	0.120"	0.209"	0.025"	—	ASME B18.21.1	100	92147A415	0000
				No. 4	0.120"	0.209"	0.025"	—	ASME B18.21.1	1,000	92147A005	00000
				No. 5	0.133"	0.236"	0.031"	—	ASME B18.21.1	100	92147A112	0000
				No. 6	0.148"	0.250"	0.031"	—	ASME B18.21.1	100	92147A420	0000
				No. 6	0.148"	0.250"	0.031"	—	ASME B18.21.1	1,000	92147A007	00000
				No. 8	0.174"	0.293"	0.040"	—	ASME B18.21.1	100	92147A425	0000
				No. 8	0.174"	0.293"	0.040"	—	ASME B18.21.1	1,000	92147A009	00000


				No. 10	0.200"	0.334"	0.047"	—	ASME B18.21.1	100	92147A430	0000
				No. 10	0.200"	0.334"	0.047"	—	ASME B18.21.1	1,000	92147A011	00000
				No. 12	0.227"	0.377"	0.056"	—	ASME B18.21.1	100	92147A113	0000
				1/4"	0.260"	0.487"	0.062"	—	ASME B18.21.1	100	92147A029	0000
				5/16"	0.322"	0.583"	0.078"	—	ASME B18.21.1	100	92147A030	00000
				3/8"	0.385"	0.680"	0.094"	—	ASME B18.21.1	50	92147A031	0000
				7/16"	0.450"	0.776"	0.109"	—	ASME B18.21.1	25	92147A032	0000
				1/2"	0.512"	0.869"	0.125"	—	ASME B18.21.1	25	92147A033	0000
				9/16"	0.574"	0.965"	0.141"	—	ASME B18.21.1	25	92147A034	00000
				5/8"	0.641"	1.073"	0.156"	—	ASME B18.21.1	10	92147A035	0000


				3/4"	0.766"	1.265"	0.188"	—	ASME B18.21.1	10	92147A036	00000
				7/8"	0.894"	1.459"	0.219"	—	ASME B18.21.1	5	92147A037	0000
				1"	1.024"	1.656"	0.250"	—	ASME B18.21.1	5	92147A038	00000
				1 1/8"	1.153"	1.847"	0.281"	—	ASME B18.21.1	1	92147A039	0000
1 1/4"				1.280"	2.036"	0.312"	—	ASME B18.21.1	1	92147A040	0000
1 3/8"	1.408"			2.219"	0.344"	—	ASME B18.21.1	1	92147A511	0000
1 1/2"	1.534"			2.419"	0.375"	—	ASME B18.21.1	1	92147A041	00000
1 5/8"	1.663"			2.553"	0.389"	—	ASME B18.21.1	1	92147A512	00000
1 3/4"	1.789"			2.679"	0.389"	—	ASME B18.21.1	1	92147A513	00000
2"	2.039"			2.936"	0.422"	—	ASME B18.21.1	1	92147A515	00000


2 1/4"	2.293"			3.221"	0.440"	—	ASME B18.21.1	1	92147A516	00000
M2	2.4 mm			4.4 mm	0.4 mm to 0.6 mm	—	DIN 127B	100	92153A406	0000
M2.5	2.9 mm			5.1 mm	0.5 mm to 0.7 mm	—	DIN 127B	100	92153A411	0000
M3	3.4 mm			6.2 mm	0.7 mm to 0.9 mm	—	DIN 127B	100	92153A416	0000
M3.5	3.9 mm			6.7 mm	0.7 mm to 0.9 mm	—	DIN 127B	100	92153A451	0000
M4	4.4 mm			7.6 mm	0.8 mm to 1.0 mm	—	DIN 127B	100	92153A418	0000
M5	5.4 mm			9.2 mm	1.1 mm to 1.3 mm	—	DIN 127B	100	92153A422	0000
M6	6.5 mm			11.8 mm	1.5 mm to 1.7 mm	—	DIN 127B	100	92153A426	0000
M8	8.5 mm			14.8 mm	1.9 mm to 2.1 mm	—	DIN 127B	100	92153A429	0000
M10	10.7 mm			18.1 mm	2.0 mm to 2.4 mm	—	DIN 127B	50	92153A434	0000


M12	12.7 mm			21.1 mm	2.3 mm to 2.7 mm	—	DIN 127B	50	92153A436	00000
M14	14.7 mm			24.1 mm	2.8 mm to 3.2 mm	—	DIN 127B	25	92153A439	0000
M16	17.0 mm			27.4 mm	3.3 mm to 3.7 mm	—	DIN 127B	10	92153A442	0000
M18	19.0 mm			29.4 mm	3.3 mm to 3.7 mm	—	DIN 127B	10	92153A445	0000
M20	21.2 mm			33.6 mm	3.8 mm to 4.2 mm	—	DIN 127B	10	92153A447	0000
M24	25.5 mm			40.0 mm	4.8 mm to 5.2 mm	—	DIN 127B	5	92153A449	0000
M30	31.7 mm			48.2 mm	5.8 mm to 6.2 mm	—	DIN 127B	1	92153A453	0000


Zinc-Plated Steel



		No. 2	0.094"	0.172"	0.020"	—	ASME B18.21.1	100	91102A710	0000


		No. 3	0.107"	0.195"	0.025"	—	ASME B18.21.1	100	91102A715	0000
		No. 3	0.107"	0.195"	0.025"	—	ASME B18.21.1	1,000	91102A004	00000
		No. 4	0.120"	0.209"	0.025"	—	ASME B18.21.1	100	91102A720	0000
		No. 4	0.120"	0.209"	0.025"	—	ASME B18.21.1	1,000	91102A005	00000
		No. 5	0.133"	0.236"	0.031"	—	ASME B18.21.1	100	91102A725	0000
		No. 5	0.133"	0.236"	0.031"	—	ASME B18.21.1	1,000	91102A006	00000
		No. 6	0.148"	0.250"	0.031"	—	ASME B18.21.1	100	91102A730	0000
		No. 6	0.148"	0.250"	0.031"	—	ASME B18.21.1	1,000	91102A007	0000
		No. 8	0.174"	0.293"	0.040"	—	ASME B18.21.1	100	91102A735	0000
		No. 8	0.174"	0.293"	0.040"	—	ASME B18.21.1	1,000	91102A009	00000


		No. 10	0.200"	0.334"	0.047"	—	ASME B18.21.1	100	91102A740	0000
		No. 10	0.200"	0.334"	0.047"	—	ASME B18.21.1	1,000	91102A011	00000
		No. 12	0.227"	0.377"	0.056"	—	ASME B18.21.1	100	91102A745	0000
		No. 12	0.227"	0.377"	0.056"	—	ASME B18.21.1	1,000	91102A013	00000
		1/4"	0.260"	0.487"	0.062"	—	ASME B18.21.1	100	91102A750	0000
		1/4"	0.260"	0.487"	0.062"	—	ASME B18.21.1	1,000	91102A029	00000
		1/4"	0.272"	0.489"	0.062"	—	ASME B18.21.1	100	92507A110	00000
		5/16"	0.322"	0.583"	0.078"	—	ASME B18.21.1	100	91102A755	0000
		5/16"	0.322"	0.583"	0.078"	—	ASME B18.21.1	1,000	91102A030	00000
		3/8"	0.385"	0.680"	0.094"	—	ASME B18.21.1	100	91102A760	0000


		3/8"	0.385"	0.680"	0.094"	—	ASME B18.21.1	1,000	91102A031	00000
		3/8"	0.397"	0.688"	0.094"	—	ASME B18.21.1	50	92507A120	0000
		7/16"	0.450"	0.776"	0.109"	—	ASME B18.21.1	100	91102A765	0000
		7/16"	0.450"	0.776"	0.109"	—	ASME B18.21.1	1,000	91102A032	00000
		1/2"	0.512"	0.869"	0.125"	—	ASME B18.21.1	100	91102A770	00000
		1/2"	0.512"	0.869"	0.125"	—	ASME B18.21.1	1,000	91102A033	00000
		1/2"	0.522"	0.879"	0.125"	—	ASME B18.21.1	25	92507A130	0000
		9/16"	0.574"	0.965"	0.141"	—	ASME B18.21.1	100	91102A034	00000
		5/8"	0.641"	1.073"	0.156"	—	ASME B18.21.1	50	91102A035	0000
		3/4"	0.766"	1.265"	0.188"	—	ASME B18.21.1	50	91102A036	00000


		7/8"	0.894"	1.459"	0.219"	—	ASME B18.21.1	25	91102A037	00000
		1"	1.024"	1.656"	0.250"	—	ASME B18.21.1	10	91102A038	0000
		1 1/8"	1.153"	1.847"	0.281"	—	ASME B18.21.1	10	91102A039	00000
		1 1/4"	1.280"	2.036"	0.312"	—	ASME B18.21.1	5	91102A040	00000
		1 3/8"	1.408"	2.219"	0.344"	—	ASME B18.21.1	5	91102A056	00000
		1 1/2"	1.534"	2.419"	0.375"	—	ASME B18.21.1	1	91102A041	0000
		1 3/4"	1.789"	2.679"	0.389"	—	ASME B18.21.1	1	91102A044	0000
		2"	2.039"	2.936"	0.422"	—	ASME B18.21.1	1	91102A047	0000
		M2	2.4 mm	4.4 mm	0.4 mm to 0.6 mm	—	DIN 127B	100	91202A214	0000
		M2.5	2.9 mm	5.1 mm	0.5 mm to 0.7 mm	—	DIN 127B	100	91202A218	0000


		M3	3.4 mm	6.2 mm	0.7 mm to 0.9 mm	—	DIN 127B	100	91202A222	0000
		M3.5	3.6 mm	6.7 mm	0.7 mm to 0.9 mm	—	DIN 127B	100	91202A224	0000
		M4	4.4 mm	7.6 mm	0.8 mm to 1.0 mm	—	DIN 127B	100	91202A226	0000
		M5	5.4 mm	9.2 mm	1.1 mm to 1.3 mm	—	DIN 127B	100	91202A230	0000
		M6	6.5 mm	11.8 mm	1.5 mm to 1.7 mm	—	DIN 127B	100	91202A234	0000
		M7	7.5 mm	12.8 mm	1.5 mm to 1.7 mm	—	DIN 127B	100	91202A111	0000
		M8	8.5 mm	14.8 mm	1.9 mm to 2.1 mm	—	DIN 127B	100	91202A238	0000
		M10	10.7 mm	18.1 mm	2.0 mm to 2.4 mm	—	DIN 127B	100	91202A242	0000
		M12	12.7 mm	21.1 mm	2.3 mm to 2.7 mm	—	DIN 127B	100	91202A246	00000
		M14	14.7 mm	24.1 mm	2.8 mm to 3.2 mm	—	DIN 127B	100	91202A250	00000

M16	17.0 mm	27.4 mm	3.3 mm to 3.7 mm	—	DIN 127B	50	91202A253	00000
M18	19.0 mm	29.4 mm	3.3 mm to 3.7 mm	—	DIN 127B	25	91202A112	0000
M20	21.2 mm	33.6 mm	3.8 mm to 4.2 mm	—	DIN 127B	25	91202A257	00000
M22	22.5 mm	35.9 mm	3.8 mm to 4.2 mm	—	DIN 127B	10	91202A113	0000
M24	25.5 mm	40.0 mm	4.8 mm to 5.2 mm	—	DIN 127B	25	91202A261	00000
M27	28.5 mm	43.0 mm	4.8 mm to 5.2 mm	—	DIN 127B	10	91202A114	00000
M30	31.7 mm	48.2 mm	5.8 mm to 6.2 mm	—	DIN 127B	10	91202A263	00000
M33	33.5 mm	55.2 mm	5.8 mm to 6.2 mm	—	DIN 127B	5	91202A115	00000
M36	37.7 mm	58.2 mm	5.8 mm to 6.2 mm	—	DIN 127B	5	91202A265	00000
M42	43.7 mm	68.2 mm	6.8 mm to 7.2 mm	—	DIN 127B	1	91202A116	0000
M48	50.5 mm	75.0 mm	6.8 mm to 7.2 mm	—	DIN 127B	1	91202A117	00000

Zinc-Yellow-Chromate-Plated Steel



		1/4"	0.260"	0.487"	0.062"	SAE Grade 8	ASME B18.21.1	100	91104A029	0000


		5/16"	0.322"	0.583"	0.078"	SAE Grade 8	ASME B18.21.1	100	91104A030	0000
		3/8"	0.385"	0.680"	0.094"	SAE Grade 8	ASME B18.21.1	100	91104A031	0000
		7/16"	0.450"	0.776"	0.109"	SAE Grade 8	ASME B18.21.1	100	91104A032	00000
		1/2"	0.512"	0.869"	0.125"	SAE Grade 8	ASME B18.21.1	100	91104A033	00000
		9/16"	0.574"	0.965"	0.141"	SAE Grade 8	ASME B18.21.1	50	91104A034	00000
		5/8"	0.641"	1.073"	0.156"	SAE Grade 8	ASME B18.21.1	50	91104A035	00000
		3/4"	0.766"	1.265"	0.188"	SAE Grade 8	ASME B18.21.1	25	91104A047	00000
		7/8"	0.894"	1.459"	0.219"	SAE Grade 8	ASME B18.21.1	10	91104A048	0000
		1"	1.024"	1.656"	0.250"	SAE Grade 8	ASME B18.21.1	10	91104A049	00000
		1 1/8"	1.153"	1.903"	0.345"	SAE Grade 8	ASME B18.21.1	5	91104A050	00000


		1 1/4"	1.280"	2.104"	0.384"	SAE Grade 8	ASME B18.21.1	1	91104A055	0000
		1 3/8"	1.408"	2.301"	0.422"	SAE Grade 8	ASME B18.21.1	1	91104A060	0000
		1 1/2"	1.534"	2.491"	0.458"	SAE Grade 8	ASME B18.21.1	1	91104A065	00000
		2"	2.039"	3.144"	0.496"	SAE Grade 8	ASME B18.21.1	1	91104A070	00000
		M3	3.4 mm	6.2 mm	0.7 mm to 0.9 mm	—	DIN 127B	100	96982A151	0000
		M4	4.4 mm	7.6 mm	0.8 mm to 1.0 mm	—	DIN 127B	100	96982A152	0000
		M5	5.4 mm	9.2 mm	1.1 mm to 1.3 mm	—	DIN 127B	100	96982A153	0000
		M6	6.5 mm	11.8 mm	1.5 mm to 1.7 mm	—	DIN 127B	100	96982A154	0000
		M8	8.5 mm	14.8 mm	1.9 mm to 2.1 mm	—	DIN 127B	100	96982A155	0000
		M10	10.7 mm	18.1 mm	2.0 mm to 2.4 mm	—	DIN 127B	100	96982A156	00000


		M12	12.7 mm	21.1 mm	2.3 mm to 2.7 mm	—	DIN 127B	50	96982A157	0000
		M14	14.7 mm	24.1 mm	2.8 mm to 3.2 mm	—	DIN 127B	50	96982A158	00000
		M16	17.0 mm	27.4 mm	3.3 mm to 3.7 mm	—	DIN 127B	25	96982A159	0000
		M18	19.0 mm	29.4 mm	3.3 mm to 3.7 mm	—	DIN 127B	25	96982A161	00000
		M20	21.2 mm	33.6 mm	3.8 mm to 4.2 mm	—	DIN 127B	10	96982A162	0000
		M24	25.5 mm	40.0 mm	4.8 mm to 5.2 mm	—	DIN 127B	10	96982A163	0000
		M30	31.7 mm	48.2 mm	5.8 mm to 6.2 mm	—	DIN 127B	5	96982A164	00000


		Black-Oxide Steel



				1/4"	0.260"	0.487"	0.062"	—	ASME B18.21.1	50	5185N111	0000


				5/16"	0.322"	0.583"	0.078"	—	ASME B18.21.1	50	5185N112	0000
				3/8"	0.385"	0.680"	0.094"	—	ASME B18.21.1	25	5185N113	0000
				7/16"	0.450"	0.776"	0.109"	—	ASME B18.21.1	25	5185N114	0000
				1/2"	0.512"	0.869"	0.125"	—	ASME B18.21.1	10	5185N115	0000
				9/16"	0.574"	0.965"	0.141"	—	ASME B18.21.1	10	5185N116	0000
				5/8"	0.641"	1.073"	0.156"	—	ASME B18.21.1	10	5185N117	0000
				3/4"	0.766"	1.265"	0.188"	—	ASME B18.21.1	5	5185N118	0000
				7/8"	0.894"	1.459"	0.219"	—	ASME B18.21.1	5	5185N119	0000
				1"	1.024"	1.656"	0.250"	—	ASME B18.21.1	1	5185N121	0000
				1 1/8"	1.153"	1.847"	0.281"	—	ASME B18.21.1	1	5185N122	0000


				1 1/4"	1.280"	2.036"	0.312"	—	ASME B18.21.1	1	5185N123	0000
				1 3/8"	1.408"	2.219"	0.344"	—	ASME B18.21.1	1	5185N124	0000
				1 1/2"	1.534"	2.419"	0.375"	—	ASME B18.21.1	1	5185N125	00000
				1 3/4"	1.789"	2.679"	0.389"	—	ASME B18.21.1	1	5185N126	00000
				2"	2.039"	2.936"	0.422"	—	ASME B18.21.1	1	5185N127	00000
				M6	6.5 mm	11.8 mm	1.5 mm to 1.7 mm	—	DIN 127B	100	97093A214	00000
M8				8.5 mm	14.8 mm	1.9 mm to 2.1 mm	—	DIN 127B	100	97093A215	00000
M10	10.7 mm			18.1 mm	2.0 mm to 2.4 mm	—	DIN 127B	50	97093A216	0000
M16	17.0 mm			27.4 mm	3.3 mm to 3.7 mm	—	DIN 127B	25	97093A218	0000


Blue-Dyed Steel



				M3	3.4 mm	6.2 mm	0.7 mm to 0.9 mm	—	DIN 127B	100	93279A123	0000


				M4	4.5 mm	7.6 mm	0.8 mm to 1.0 mm	—	DIN 127B	100	93279A124	0000
				M5	5.4 mm	9.2 mm	1.1 mm to 1.3 mm	—	DIN 127B	100	93279A125	0000
				M6	6.2 mm	12.1 mm	2.0 mm	—	ASME B18.21.2M	100	93279A100	00000
				M6	6.5 mm	11.8 mm	1.5 mm to 1.7 mm	—	DIN 127B	50	93279A110	0000
				M8	8.2 mm	15.2 mm	2.5 mm	—	ASME B18.21.2M	100	93279A200	0000
				M8	8.5 mm	14.8 mm	1.9 mm to 2.1 mm	—	DIN 127B	50	93279A120	0000
				M10	10.2 mm	18.0 mm	2.9 mm	—	ASME B18.21.2M	50	93279A300	0000
				M10	10.7 mm	18.1 mm	2.0 mm to 2.4 mm	—	DIN 127B	25	93279A130	0000
				M12	12.3 mm	21.7 mm	3.8 mm	—	ASME B18.21.2M	100	93279A400	00000
				M12	12.7 mm	21.1 mm	2.3 mm to 2.7 mm	—	DIN 127B	25	93279A140	0000


				M16	16.4 mm	27.9 mm	4.8 mm	—	ASME B18.21.2M	25	93279A500	00000
				M16	17.0 mm	27.4 mm	3.3 mm to 3.7 mm	—	DIN 127B	25	93279A150	00000
				M20	20.5 mm	33.8 mm	5.7 mm	—	ASME B18.21.2M	10	93279A600	0000
				M20	21.2 mm	33.6 mm	3.8 mm to 4.2 mm	—	DIN 127B	10	93279A160	0000
				M24	24.5 mm	40.7 mm	7.2 mm	—	ASME B18.21.2M	10	93279A700	00000


				Steel



						No. 5	0.133"	0.236"	0.031"	—	ASME B18.21.1	100	91101A006	00000


						No. 6	0.148"	0.250"	0.031"	—	ASME B18.21.1	1,000	91101A007	0000
						No. 8	0.174"	0.293"	0.040"	—	ASME B18.21.1	1,000	91101A009	00000
						No. 10	0.200"	0.334"	0.047"	—	ASME B18.21.1	1,000	91101A011	00000
		No. 12				0.227"	0.377"	0.056"	—	ASME B18.21.1	1,000	91101A013	00000
		1/4"	0.260"			0.487"	0.062"	—	ASME B18.21.1	100	91101A229	0000
		1/4"	0.260"			0.487"	0.062"	—	ASME B18.21.1	1,000	91101A029	00000
		5/16"	0.322"			0.583"	0.078"	—	ASME B18.21.1	100	91101A230	0000
		5/16"	0.322"			0.583"	0.078"	—	ASME B18.21.1	1,000	91101A030	00000
		3/8"	0.385"			0.680"	0.094"	—	ASME B18.21.1	100	91101A231	0000
		3/8"	0.385"			0.680"	0.094"	—	ASME B18.21.1	1,000	91101A031	00000


		7/16"	0.450"			0.776"	0.109"	—	ASME B18.21.1	100	91101A232	0000
		1/2"	0.512"			0.869"	0.125"	—	ASME B18.21.1	100	91101A233	00000
		1/2"	0.512"			0.869"	0.125"	—	ASME B18.21.1	1,000	91101A033	000000
		9/16"	0.574"			0.965"	0.141"	—	ASME B18.21.1	50	91101A234	0000
		5/8"	0.641"			1.073"	0.156"	—	ASME B18.21.1	50	91101A235	00000
		5/8"	0.641"			1.073"	0.156"	—	ASME B18.21.1	500	91101A035	00000
		3/4"	0.766"			1.265"	0.188"	—	ASME B18.21.1	50	91101A236	00000
		3/4"	0.766"			1.265"	0.188"	—	ASME B18.21.1	500	91101A036	000000
		7/8"	0.894"			1.459"	0.219"	—	ASME B18.21.1	25	91101A237	00000
		1"	1.024"			1.656"	0.250"	—	ASME B18.21.1	10	91101A038	0000


		1 1/8"	1.153"			1.847"	0.281"	—	ASME B18.21.1	10	91101A039	00000
		1 1/4"	1.280"			2.036"	0.312"	—	ASME B18.21.1	10	91101A040	00000
		1 1/2"	1.534"			2.419"	0.375"	—	ASME B18.21.1	5	91101A041	00000
		1 5/8"	1.663"			2.553"	0.389"	—	ASME B18.21.1	1	91101A045	0000
		1 3/4"	1.789"			2.679"	0.389"	—	ASME B18.21.1	1	91101A051	0000
		2"	2.039"			2.936"	0.422"	—	ASME B18.21.1	1	91101A059	0000
		M2	2.4 mm			4.4 mm	0.4 mm to 0.6 mm	—	DIN 127B	100	91169A050	0000
		M2.5	2.9 mm			5.1 mm	0.5 mm to 0.7 mm	—	DIN 127B	100	91169A070	0000
M3		3.4 mm	6.2 mm			0.7 mm to 0.9 mm	—	DIN 127B	100	91169A150	0000
M3.5	3.9 mm	6.7 mm	0.7 mm to 0.9 mm			—	DIN 127B	100	91169A155	0000


M4	4.4 mm	7.6 mm	0.8 mm to 1.0 mm			—	DIN 127B	100	91169A160	0000
M5	5.4 mm	9.2 mm	1.1 mm to 1.3 mm			—	DIN 127B	100	91169A170	0000
M6	6.5 mm	11.8 mm	1.5 mm to 1.7 mm			—	DIN 127B	100	91169A180	0000
M8	8.5 mm	14.8 mm	1.9 mm to 2.1 mm			—	DIN 127B	100	91169A200	0000
M10	10.7 mm	18.1 mm	2.0 mm to 2.4 mm			—	DIN 127B	100	91169A210	0000
M12	12.7 mm	21.1 mm	2.3 mm to 2.7 mm			—	DIN 127B	100	91169A214	00000
M14	14.7 mm	24.1 mm	2.8 mm to 3.2 mm			—	DIN 127B	100	91169A220	00000
M16	17.0 mm	27.4 mm	3.3 mm to 3.7 mm			—	DIN 127B	50	91169A240	00000
M18	19.0 mm	29.4 mm	3.3 mm to 3.7 mm			—	DIN 127B	50	91169A242	00000
M20	21.2 mm	33.6 mm	3.8 mm to 4.2 mm			—	DIN 127B	25	91169A245	00000


M24	25.5 mm	40.0 mm	4.8 mm to 5.2 mm			—	DIN 127B	25	91169A248	00000
M30	31.7 mm	48.2 mm	5.8 mm to 6.2 mm			—	DIN 127B	5	91169A244	00000
M36	37.7 mm	58.2 mm	5.8 mm to 6.2 mm			—	DIN 127B	1	91169A249	0000


Corrosion-Resistant Galvanized Steel



		1/4"	0.260"			0.487"	0.062"	—	ASME B18.21.1	100	95160A210	00000


		5/16"	0.322"	0.583"	0.078"	—	ASME B18.21.1	100	95160A215	0000
		3/8"	0.385"	0.705"	0.094"	—	ASME B18.21.1	100	95160A220	0000
		7/16"	0.450"	0.776"	0.109"	—	ASME B18.21.1	25	95160A225	0000
		1/2"	0.512"	0.869"	0.125"	—	ASME B18.21.1	50	95160A230	0000
		5/8"	0.641"	1.073"	0.156"	—	ASME B18.21.1	25	95160A240	0000
		3/4"	0.766"	1.265"	0.188"	—	ASME B18.21.1	25	95160A250	00000
		7/8"	0.894"	1.459"	0.219"	—	ASME B18.21.1	10	95160A260	0000
		1"	1.024"	1.656"	0.250"	—	ASME B18.21.1	10	95160A270	0000
		1 1/4"	1.280"	2.036"	0.312"	—	ASME B18.21.1	5	95160A280	00000
		M6	6.5 mm	11.8 mm	1.5 mm to 1.7 mm	—	DIN 127B	50	91169A310	00000


		M8	8.5 mm	14.8 mm	1.9 mm to 2.1 mm	—	DIN 127B	50	91169A320	00000
		M10	10.7 mm	18.1 mm	2.0 mm to 2.4 mm	—	DIN 127B	50	91169A330	00000
		M12	12.7 mm	21.1 mm	2.3 mm to 2.7 mm	—	DIN 127B	25	91169A340	00000
		M16	17.0 mm	27.4 mm	3.3 mm to 3.7 mm	—	DIN 127B	10	91169A350	0000
		M20	21.2 mm	33.6 mm	3.8 mm to 4.2 mm	—	DIN 127B	1	91169A360	0000


		Highly Corrosion-Resistant Zinc-Flake-Coated Steel



				No. 10	0.200"	0.334"	0.047"	—	ASME B18.21.1	25	5185N151	0000


				1/4"	0.260"	0.487"	0.062"	—	ASME B18.21.1	25	5185N128	0000
				5/16"	0.322"	0.583"	0.078"	—	ASME B18.21.1	25	5185N129	0000
				3/8"	0.385"	0.680"	0.094"	—	ASME B18.21.1	10	5185N131	0000
				7/16"	0.450"	0.776"	0.109"	—	ASME B18.21.1	10	5185N132	0000
				1/2"	0.512"	0.869"	0.125"	—	ASME B18.21.1	10	5185N133	00000
				9/16"	0.574"	0.965"	0.141"	—	ASME B18.21.1	5	5185N134	0000
				5/8"	0.641"	1.073"	0.156"	—	ASME B18.21.1	5	5185N135	0000
				3/4"	0.766"	1.265"	0.188"	—	ASME B18.21.1	1	5185N136	0000
				7/8"	0.894"	1.459"	0.219"	—	ASME B18.21.1	1	5185N137	0000
				1"	1.024"	1.656"	0.250"	—	ASME B18.21.1	1	5185N138	0000


				1 1/4"	1.280"	2.036"	0.312"	—	ASME B18.21.1	1	5185N141	00000
				M6	6.5 mm	11.8 mm	1.5 mm to 1.7 mm	—	DIN 127B	25	90491A101	0000
				M8	8.5 mm	14.8 mm	1.9 mm to 2.1 mm	—	DIN 127B	25	90491A102	00000
				M10	10.7 mm	18.1 mm	2.0 mm to 2.4 mm	—	DIN 127B	25	90491A103	00000


				Aluminum



						No. 6	0.148"	0.250"	0.031"	—	ASME B18.21.1	100	91013A711	0000


						No. 8	0.174"	0.293"	0.040"	—	ASME B18.21.1	100	91013A715	0000
						No. 10	0.200"	0.334"	0.047"	—	ASME B18.21.1	100	91013A718	0000
						1/4"	0.260"	0.487"	0.062"	—	ASME B18.21.1	100	91013A721	00000
						5/16"	0.322"	0.583"	0.078"	—	ASME B18.21.1	50	91013A724	0000
						3/8"	0.385"	0.680"	0.094"	—	ASME B18.21.1	50	91013A727	00000
						1/2"	0.512"	0.869"	0.125"	—	ASME B18.21.1	10	91013A730	0000
						5/8"	0.641"	1.073"	0.156"	—	ASME B18.21.1	10	91013A733	00000
3/4"						0.766"	1.265"	0.188"	—	ASME B18.21.1	10	91013A736	00000


Highly Corrosion-Resistant Silicon Bronze



						No. 2	0.094"	0.172"	0.020"	—	ASME B18.21.1	100	93496A403	0000


						No. 3	0.107"	0.195"	0.025"	—	ASME B18.21.1	100	93496A404	0000
						No. 4	0.120"	0.209"	0.025"	—	ASME B18.21.1	100	93496A405	0000
						No. 4	0.120"	0.209"	0.025"	—	ASME B18.21.1	1,000	93496A005	00000
						No. 6	0.148"	0.250"	0.031"	—	ASME B18.21.1	100	93496A407	0000
						No. 6	0.148"	0.250"	0.031"	—	ASME B18.21.1	1,000	93496A007	00000
						No. 8	0.174"	0.293"	0.040"	—	ASME B18.21.1	100	93496A409	0000
						No. 8	0.174"	0.293"	0.040"	—	ASME B18.21.1	1,000	93496A009	00000
						No. 10	0.200"	0.334"	0.047"	—	ASME B18.21.1	100	93496A415	0000
						No. 12	0.227"	0.377"	0.056"	—	ASME B18.21.1	100	93496A418	00000
						1/4"	0.260"	0.487"	0.062"	—	ASME B18.21.1	100	93496A029	00000


						5/16"	0.322"	0.583"	0.078"	—	ASME B18.21.1	50	93496A030	00000
						3/8"	0.385"	0.680"	0.094"	—	ASME B18.21.1	25	93496A031	00000
						7/16"	0.450"	0.776"	0.109"	—	ASME B18.21.1	10	93496A432	0000
						1/2"	0.512"	0.869"	0.125"	—	ASME B18.21.1	10	93496A433	0000
						5/8"	0.641"	1.073"	0.156"	—	ASME B18.21.1	5	93496A435	0000
		3/4"				0.766"	1.265"	0.188"	—	ASME B18.21.1	5	93496A436	00000
		1"	1.024"			1.656"	0.250"	—	ASME B18.21.1	5	93496A445	00000
		M3	3.4 mm			6.2 mm	0.7 mm to 0.9 mm	—	DIN 127B	100	97093A201	00000
		M4	4.4 mm			7.6 mm	0.8 mm to 1.0 mm	—	DIN 127B	100	97093A202	00000
		M5	5.4 mm			9.2 mm	1.1 mm to 1.3 mm	—	DIN 127B	100	97093A203	00000


		M6	6.5 mm			11.8 mm	1.5 mm to 1.7 mm	—	DIN 127B	50	97093A204	00000
		M8	8.5 mm			14.8 mm	1.9 mm to 2.1 mm	—	DIN 127B	25	97093A205	00000
		M10	10.7 mm			18.1 mm	2.0 mm to 2.4 mm	—	DIN 127B	10	97093A206	0000


		High-Strength Highly Corrosion-Resistant K500 Nickel



						1/4"	0.260"	0.487"	0.062" to 0.077"	—	ASME B18.21.1	10	91118A112	00000


						5/16"	0.322"	0.583"	0.078" to 0.097"	—	ASME B18.21.1	5	91118A116	00000
						3/8"	0.385"	0.680"	0.094" to 0.115"	—	ASME B18.21.1	5	91118A120	00000
						1/2"	0.512"	0.869"	0.125" to 0.151"	—	ASME B18.21.1	1	91118A128	0000
						5/8"	0.641"	1.073"	0.156" to 0.189"	—	ASME B18.21.1	1	91118A132	00000

Tooth Lock Washers

Grip tighter than split lock washers to prevent nuts and screws from loosening in applications with constant movement, such as conveyors. Tooth lock washers typically can't be reused because the teeth often get bent when tightened.

External Tooth

Teeth on the outside edge bite into both the fastener and the mating surface for a stronger hold than internal-tooth lock washers. However, they may mar your material and snag on objects. Pair these washers with nuts and screws that are large enough to make contact with the teeth, such as pan, button, and binding head screws.

Highly Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these washers won't degrade when exposed to harsh weather, salt water, and most chemicals.

Wear-Resistant 400 Series Stainless Steel—These grip hard material better than other types of stainless steel. They are not as corrosion resistant as 18-8 and 316 stainless steel, so they are best for environments that experience occasional moisture.

Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.

Highly Corrosion-Resistant Phosphor Bronze—Stronger and more wear resistant than silicon bronze, but with the same excellent corrosion resistance. These washers won't rust or deteriorate when submerged in salt water, so they're a good fit for marine environments.

DIN 6798—Best for slightly bumpy or irregular surfaces because the teeth are angled to make even contact with the material.

	For Screw Size	ID	OD	Thk.	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel



		No. 2	0.086"	0.189"	0.010" to 0.013"	ASME B18.21.1	100	95584A311	00000


		No. 4	0.115"	0.260"	0.012" to 0.018"	ASME B18.21.1	100	95584A200	0000
		No. 6	0.141"	0.320"	0.016" to 0.022"	ASME B18.21.1	100	95584A201	0000
		No. 8	0.168"	0.381"	0.018" to 0.023"	ASME B18.21.1	100	95584A203	0000
		No. 10	0.195"	0.410"	0.018" to 0.024"	ASME B18.21.1	100	95584A205	0000
		No. 12	0.221"	0.475"	0.020" to 0.027"	ASME B18.21.1	100	95584A511	0000
		1/4"	0.256"	0.510"	0.023" to 0.028"	ASME B18.21.1	100	95584A207	0000
		5/16"	0.320"	0.610"	0.028" to 0.034"	ASME B18.21.1	50	95584A209	0000
		3/8"	0.384"	0.694"	0.032" to 0.040"	ASME B18.21.1	25	95584A211	0000
		1/2"	0.513"	0.900"	0.037" to 0.045"	ASME B18.21.1	50	95584A512	0000
		5/8"	0.641"	1.070"	0.042" to 0.050"	ASME B18.21.1	10	95584A312	0000


		3/4"	0.768"	1.260"	0.047" to 0.055"	ASME B18.21.1	5	95584A313	0000
		M2	2.2 mm	4.5 mm	0.2 mm to 0.4 mm	DIN 6797	100	95060A510	0000
		M2	2.2 mm	4.5 mm	0.2 mm to 0.4 mm	DIN 6798	100	91120A311	0000
		M2.5	2.7 mm	5.5 mm	0.3 mm to 0.5 mm	DIN 6797	100	95060A520	0000
		M2.5	2.7 mm	5.5 mm	0.3 mm to 0.5 mm	DIN 6798	100	91120A312	0000
		M3	3.2 mm	6.0 mm	0.3 mm to 0.5 mm	DIN 6797	100	95060A320	0000
		M3	3.2 mm	6.0 mm	0.3 mm to 0.5 mm	DIN 6798	100	91120A120	0000
		M3.5	3.7 mm	7.0 mm	0.4 mm to 0.6 mm	DIN 6797	100	95060A530	0000
		M4	4.3 mm	8.0 mm	0.4 mm to 0.6 mm	DIN 6797	100	95060A330	0000
		M4	4.3 mm	8.0 mm	0.4 mm to 0.6 mm	DIN 6798	100	91120A130	0000


		M5	5.3 mm	10.0 mm	0.5 mm to 0.7 mm	DIN 6797	100	95060A350	0000
		M5	5.3 mm	10.0 mm	0.5 mm to 0.7 mm	DIN 6798	100	91120A140	0000
		M6	6.4 mm	11.0 mm	0.6 mm to 0.8 mm	DIN 6797	100	95060A360	0000
		M6	6.4 mm	11.0 mm	0.6 mm to 0.8 mm	DIN 6798	100	91120A160	0000
		M7	7.4 mm	12.5 mm	0.7 mm to 0.9 mm	DIN 6797	100	95060A460	0000
		M8	8.4 mm	15.0 mm	0.7 mm to 0.9 mm	DIN 6797	100	95060A390	0000
		M8	8.4 mm	15.0 mm	0.7 mm to 0.9 mm	DIN 6798	100	91120A180	0000
		M10	10.5 mm	18.0 mm	0.8 mm to 1.0 mm	DIN 6797	100	95060A400	0000
		M10	10.5 mm	18.0 mm	0.8 mm to 1.0 mm	DIN 6798	100	91120A200	00000
		M12	13.0 mm	20.5 mm	0.9 mm to 1.2 mm	DIN 6797	50	95060A411	0000


		M12	13.0 mm	20.5 mm	0.9 mm to 1.2 mm	DIN 6798	50	91120A211	0000
		M14	15.0 mm	24.0 mm	0.9 mm to 1.2 mm	DIN 6797	50	95060A420	0000
		M16	17.0 mm	26.0 mm	1.0 mm to 1.4 mm	DIN 6797	50	95060A540	00000
		M16	17.0 mm	26.0 mm	1.0 mm to 1.4 mm	DIN 6798	50	91120A235	0000
		M18	19.0 mm	30.0 mm	1.2 mm to 1.6 mm	DIN 6797	10	95060A440	0000
		M20	21.0 mm	33.0 mm	1.2 mm to 1.5 mm	DIN 6798	10	91120A241	0000
		M20	21.0 mm	33.0 mm	1.2 mm to 1.6 mm	DIN 6797	10	95060A450	0000
		M22	23.0 mm	36.0 mm	1.3 mm to 1.7 mm	DIN 6797	10	95060A470	0000
		M24	25.0 mm	38.0 mm	1.3 mm to 1.7 mm	DIN 6797	10	95060A480	0000
		M24	25.0 mm	38.0 mm	1.4 mm to 1.6 mm	DIN 6798	10	91120A245	0000


		M30	31.0 mm	48.0 mm	1.4 mm to 1.8 mm	DIN 6797	10	95060A500	00000


		Black-Oxide 18-8 Stainless Steel



				No. 6	0.141"	0.320"	0.016" to 0.022"	ASME B18.21.1	100	95584A314	0000


No. 8				0.168"	0.381"	0.018" to 0.023"	ASME B18.21.1	100	95584A315	0000
No. 10	0.195"			0.410"	0.018" to 0.024"	ASME B18.21.1	100	95584A316	0000
1/4"	0.256"			0.510"	0.023" to 0.028"	ASME B18.21.1	100	95584A317	0000
5/16"	0.320"			0.610"	0.028" to 0.034"	ASME B18.21.1	100	95584A318	0000
3/8"	0.384"			0.694"	0.032" to 0.040"	ASME B18.21.1	100	95584A319	00000


Highly Corrosion-Resistant 316 Stainless Steel



				No. 4	0.115"	0.260"	0.012" to 0.018"	ASME B18.21.1	10	90375A005	0000


				No. 6	0.141"	0.320"	0.016" to 0.022"	ASME B18.21.1	10	90375A007	0000
				No. 8	0.168"	0.381"	0.018" to 0.023"	ASME B18.21.1	10	90375A009	0000
				No. 10	0.195"	0.410"	0.018" to 0.024"	ASME B18.21.1	10	90375A011	0000
				1/4"	0.256"	0.510"	0.023" to 0.028"	ASME B18.21.1	25	90375A110	0000
				5/16"	0.320"	0.610"	0.028" to 0.034"	ASME B18.21.1	25	90375A120	0000
				3/8"	0.384"	0.694"	0.032" to 0.040"	ASME B18.21.1	10	90375A130	0000
				1/2"	0.513"	0.900"	0.037" to 0.045"	ASME B18.21.1	10	90375A140	0000
				M3	3.2 mm	6.0 mm	0.3 mm to 0.5 mm	DIN 6797	5	90412A110	0000
				M4	4.3 mm	8.0 mm	0.4 mm to 0.6 mm	DIN 6797	5	90412A120	0000
				M5	5.3 mm	10.0 mm	0.5 mm to 0.7 mm	DIN 6797	5	90412A130	0000


				M6	6.4 mm	11.0 mm	0.6 mm to 0.8 mm	DIN 6797	5	90412A140	0000
				M8	8.4 mm	15.0 mm	0.7 mm to 0.9 mm	DIN 6797	5	90412A150	0000
				M10	10.5 mm	18.0 mm	0.8 mm to 1.0 mm	DIN 6797	1	90412A160	0000
				M12	13.0 mm	20.5 mm	0.9 mm to 1.2 mm	DIN 6797	1	90412A170	0000
				M14	15.0 mm	24.0 mm	0.9 mm to 1.2 mm	DIN 6797	1	90412A180	0000
				M16	17.3 mm	26.0 mm	1.0 mm to 1.4 mm	DIN 6797	1	90412A190	0000
				M20	21.0 mm	33.0 mm	1.2 mm to 1.6 mm	DIN 6797	1	90412A200	0000


				Wear-Resistant 400 Series Stainless Steel



						No. 2	0.096"	0.195"	0.010" to 0.016"	—	100	98438A200	0000


						No. 3	0.102"	0.235"	0.010" to 0.016"	ASME B18.21.1	100	98438A205	0000
						No. 4	0.115"	0.260"	0.012" to 0.018"	ASME B18.21.1	100	98438A210	0000
						No. 5	0.129"	0.285"	0.014" to 0.020"	ASME B18.21.1	100	98438A215	0000
						No. 6	0.141"	0.320"	0.016" to 0.022"	ASME B18.21.1	100	98438A220	0000
						No. 8	0.168"	0.381"	0.018" to 0.023"	ASME B18.21.1	100	98438A225	0000
						No. 10	0.195"	0.410"	0.018" to 0.024"	ASME B18.21.1	100	98438A230	0000
						No. 12	0.221"	0.475"	0.020" to 0.027"	ASME B18.21.1	100	98438A235	0000
						1/4"	0.256"	0.510"	0.023" to 0.028"	ASME B18.21.1	100	98438A240	0000
						5/16"	0.320"	0.610"	0.028" to 0.034"	ASME B18.21.1	100	98438A030	0000
						3/8"	0.384"	0.694"	0.032" to 0.040"	ASME B18.21.1	50	98438A031	0000


						7/16"	0.448"	0.760"	0.032" to 0.040"	ASME B18.21.1	50	98438A032	0000
						1/2"	0.513"	0.900"	0.037" to 0.045"	ASME B18.21.1	25	98438A033	0000
						9/16"	0.576"	0.985"	0.037" to 0.045"	ASME B18.21.1	25	93419A111	0000
						5/8"	0.641"	1.070"	0.042" to 0.050"	ASME B18.21.1	25	98438A035	00000
						3/4"	0.768"	1.260"	0.047" to 0.055"	ASME B18.21.1	25	98438A036	00000
		7/8"				0.897"	1.410"	0.052" to 0.060"	ASME B18.21.1	5	93419A112	0000
		1"	1.025"			1.620"	0.059" to 0.067"	ASME B18.21.1	5	93419A113	00000


		Zinc-Plated Steel



						No. 2	0.086"	0.195"	0.010" to 0.016"	—	100	91114A003	0000


						No. 3	0.102"	0.235"	0.010" to 0.016"	ASME B18.21.1	100	91114A004	0000
						No. 4	0.115"	0.260"	0.012" to 0.018"	ASME B18.21.1	100	91114A005	0000
No. 6						0.141"	0.320"	0.016" to 0.022"	ASME B18.21.1	100	91114A007	0000
No. 8	0.168"					0.381"	0.018" to 0.023"	ASME B18.21.1	100	91114A009	0000
No. 10	0.195"					0.410"	0.018" to 0.024"	ASME B18.21.1	100	91114A011	0000
No. 12	0.221"					0.475"	0.020" to 0.027"	ASME B18.21.1	100	91114A013	0000
1/4"	0.256"					0.510"	0.023" to 0.028"	ASME B18.21.1	100	91114A029	0000
5/16"	0.320"					0.610"	0.028" to 0.034"	ASME B18.21.1	100	91114A030	0000
3/8"	0.384"					0.694"	0.032" to 0.040"	ASME B18.21.1	100	91114A031	0000
7/16"	0.448"					0.760"	0.032" to 0.040"	ASME B18.21.1	100	91114A032	00000


1/2"	0.513"					0.900"	0.037" to 0.045"	ASME B18.21.1	100	91114A033	00000
9/16"	0.576"					0.985"	0.037" to 0.045"	ASME B18.21.1	25	91114A034	0000
5/8"	0.641"					1.070"	0.042" to 0.050"	ASME B18.21.1	50	91114A035	00000
3/4"	0.768"					1.260"	0.047" to 0.055"	ASME B18.21.1	25	91114A036	00000
7/8"	0.897"					1.410"	0.052" to 0.060"	ASME B18.21.1	25	91114A037	00000
1"	1.025"					1.620"	0.059" to 0.067"	ASME B18.21.1	10	91114A038	00000
M2	2.3 mm					4.5 mm	0.2 mm to 0.4 mm	DIN 6797	100	97985A111	0000
M2.5	2.8 mm					5.5 mm	0.3 mm to 0.5 mm	DIN 6797	100	97985A112	0000
M3	3.2 mm					6.0 mm	0.3 mm to 0.5 mm	DIN 6797	100	97985A520	0000
M3	3.2 mm					6.0 mm	0.4 mm to 0.5 mm	DIN 6798	100	97985A720	0000


M3.5	3.9 mm					7.0 mm	0.9 mm to 1.2 mm	DIN 6797	100	97985A211	0000
M4	4.3 mm					8.0 mm	0.4 mm to 0.6 mm	DIN 6797	100	97985A530	0000
M4	4.3 mm					8.0 mm	0.5 mm to 0.6 mm	DIN 6798	100	97985A730	0000
M5	5.3 mm					10.0 mm	0.5 mm to 0.7 mm	DIN 6797	100	97985A550	0000
M5	5.3 mm					10.0 mm	0.6 mm to 0.7 mm	DIN 6798	100	97985A740	0000
M6	6.4 mm					11.0 mm	0.6 mm to 0.8 mm	DIN 6797	100	97985A560	0000
M6	6.4 mm					11.0 mm	0.7 mm to 0.8 mm	DIN 6798	100	97985A760	0000
M7	7.4 mm			12.5 mm		0.7 mm to 0.9 mm	DIN 6797	25	97985A113	0000
M8	8.4 mm			14.0 mm	0.8 mm to 0.9 mm	DIN 6798	100	97985A780	0000
M8	8.4 mm			15.0 mm	0.7 mm to 0.9 mm	DIN 6797	100	97985A590	0000


M10	10.5 mm			18.0 mm	0.8 mm to 1.0 mm	DIN 6797	50	97985A600	0000
M10	10.5 mm			18.0 mm	0.9 mm to 1.0 mm	DIN 6798	50	97985A800	0000
M12	13.0 mm			20.5 mm	0.9 mm to 1.2 mm	DIN 6797	25	97985A611	0000
M12	13.0 mm			20.5 mm	1.0 mm to 1.2 mm	DIN 6798	50	97985A810	0000
M14	15.0 mm			24.0 mm	0.9 mm to 1.2 mm	DIN 6797	25	97985A620	0000
M16	17.3 mm			26.0 mm	1.0 mm to 1.4 mm	DIN 6797	25	97985A630	0000
M18	19.0 mm			30.0 mm	1.2 mm to 1.6 mm	DIN 6797	5	97985A640	0000
M20	21.0 mm			33.0 mm	1.2 mm to 1.6 mm	DIN 6797	5	97985A650	0000
M22	23.0 mm			36.0 mm	1.3 mm to 1.7 mm	DIN 6797	5	97985A114	0000
M24	25.0 mm			38.0 mm	1.3 mm to 1.7 mm	DIN 6797	5	97985A660	0000


M30	31.0 mm			48.0 mm	1.4 mm to 1.8 mm	DIN 6797	5	97985A116	0000


Black-Oxide Steel



				No. 4	0.115"	0.260"	0.012" to 0.018"	ASME B18.21.1	100	91233A111	0000


				No. 6	0.141"	0.320"	0.016" to 0.022"	ASME B18.21.1	100	91233A112	0000
		No. 8		0.168"	0.381"	0.018" to 0.023"	ASME B18.21.1	100	91233A113	0000
		No. 10	0.195"	0.410"	0.018" to 0.024"	ASME B18.21.1	100	91233A114	0000
		No. 12	0.221"	0.475"	0.020" to 0.027"	ASME B18.21.1	100	91233A115	0000
		1/4"	0.256"	0.510"	0.023" to 0.028"	ASME B18.21.1	100	91233A116	0000
		3/8"	0.384"	0.694"	0.032" to 0.040"	ASME B18.21.1	50	91233A117	0000
		1/2"	0.513"	0.900"	0.037" to 0.045"	ASME B18.21.1	25	91233A118	0000


		Highly Corrosion-Resistant Phosphor Bronze



				No. 3	0.102"	0.235"	0.010" to 0.016"	ASME B18.21.1	100	92164A333	0000


				No. 4	0.115"	0.260"	0.012" to 0.018"	ASME B18.21.1	100	92164A005	0000
				No. 6	0.141"	0.320"	0.016" to 0.022"	ASME B18.21.1	100	92164A007	0000
				No. 8	0.168"	0.381"	0.018" to 0.023"	ASME B18.21.1	100	92164A009	0000
				No. 10	0.195"	0.410"	0.018" to 0.024"	ASME B18.21.1	100	92164A011	0000
				No. 12	0.221"	0.475"	0.020" to 0.027"	ASME B18.21.1	100	92164A334	0000
				1/4"	0.256"	0.510"	0.023" to 0.028"	ASME B18.21.1	100	92164A029	00000
				5/16"	0.320"	0.610"	0.028" to 0.034"	ASME B18.21.1	50	92164A030	0000
				3/8"	0.384"	0.694"	0.032" to 0.040"	ASME B18.21.1	25	92164A031	0000
				7/16"	0.448"	0.760"	0.032" to 0.040"	ASME B18.21.1	25	92164A032	0000
				1/2"	0.513"	0.900"	0.037" to 0.045"	ASME B18.21.1	25	92164A033	00000


				5/8"	0.641"	1.070"	0.042" to 0.050"	ASME B18.21.1	10	92164A040	00000
				3/4"	0.768"	1.260"	0.047" to 0.055"	ASME B18.21.1	5	92164A335	0000

Internal Tooth

Internal teeth dig into the nut or screw to prevent it from backing out. Unlike external-tooth lock washers, these have a smooth outside edge, so they are less likely to mar your material or snag on objects. However, they don’t grip quite as well. Pair them with fasteners that have small diameters, such as fillister and cheese head screws.

Highly Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these washers won't degrade when exposed to harsh weather, salt water, and most chemicals.

Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.

	For Screw Size	ID	OD	Thk.	For Fastener Strength Grade/Class	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel



		No. 4	0.115"	0.270"	0.012" to 0.018"	—	ASME B18.21.1	100	91757A101	00000


		No. 6	0.141"	0.295"	0.016" to 0.022"	—	ASME B18.21.1	100	91757A103	0000
		No. 8	0.168"	0.340"	0.018" to 0.023"	—	ASME B18.21.1	100	91757A105	0000
		No. 10	0.195"	0.381"	0.018" to 0.024"	—	ASME B18.21.1	100	91757A107	0000
		No. 12	0.231"	0.410"	0.020" to 0.027"	—	ASME B18.21.1	100	91757A132	0000
		1/4"	0.256"	0.478"	0.023" to 0.028"	—	ASME B18.21.1	100	91757A109	0000
		5/16"	0.320"	0.610"	0.028" to 0.034"	—	ASME B18.21.1	50	91757A111	0000
		3/8"	0.384"	0.692"	0.032" to 0.040"	—	ASME B18.21.1	25	91757A113	0000
		1/2"	0.512"	0.900"	0.037" to 0.045"	—	ASME B18.21.1	10	91757A117	0000
		9/16"	0.576"	0.985"	0.037" to 0.045"	—	ASME B18.21.1	10	91757A122	0000
		5/8"	0.640"	1.071"	0.042" to 0.050"	—	ASME B18.21.1	10	91757A128	0000


		3/4"	0.769"	1.245"	0.047" to 0.055"	—	ASME B18.21.1	5	91757A131	0000
		M2	2.2 mm	4.5 mm	0.2 mm to 0.4 mm	—	DIN 6797	100	93925A210	0000
		M2.3	2.5 mm	5.0 mm	0.2 mm to 0.4 mm	—	DIN 6797	100	93925A411	0000
		M2.5	2.7 mm	5.5 mm	0.2 mm to 0.5 mm	—	DIN 6797	100	93925A220	0000
		M3	3.2 mm	6.0 mm	0.3 mm to 0.5 mm	—	DIN 6797	100	93925A240	0000
		M3.5	3.7 mm	7.0 mm	0.4 mm to 0.6 mm	—	DIN 6797	100	93925A221	0000
		M4	4.3 mm	8.0 mm	0.4 mm to 0.6 mm	—	DIN 6797	100	93925A250	0000
		M5	5.3 mm	10.0 mm	0.5 mm to 0.7 mm	—	DIN 6797	100	93925A260	0000
		M6	6.4 mm	11.0 mm	0.6 mm to 0.8 mm	—	DIN 6797	100	93925A270	0000
		M7	7.4 mm	12.5 mm	0.7 mm to 0.9 mm	—	DIN 6797	50	93925A412	00000


		M8	8.4 mm	15.0 mm	0.7 mm to 0.9 mm	—	DIN 6797	100	93925A280	0000
		M10	10.5 mm	18.0 mm	0.8 mm to 1.0 mm	—	DIN 6797	50	93925A290	0000
		M12	13.0 mm	20.5 mm	0.9 mm to 1.2 mm	—	DIN 6797	50	93925A300	0000
		M14	15.0 mm	24.0 mm	0.9 mm to 1.2 mm	—	DIN 6797	25	93925A310	0000
		M16	17.0 mm	26.0 mm	1.0 mm to 1.4 mm	—	DIN 6797	25	93925A320	0000
		M18	19.0 mm	30.0 mm	1.2 mm to 1.5 mm	—	DIN 6797	10	93925A330	0000
		M20	21.0 mm	33.0 mm	1.2 mm to 1.5 mm	—	DIN 6797	10	93925A340	0000
		M22	23.0 mm	36.0 mm	1.3 mm to 1.6 mm	—	DIN 6797	10	93925A413	00000
		M24	25.0 mm	38.0 mm	1.3 mm to 1.6 mm	—	DIN 6797	10	93925A414	00000


		Highly Corrosion-Resistant 316 Stainless Steel



				No. 4	0.115"	0.270"	0.012" to 0.018"	—	ASME B18.21.1	5	91108A110	0000


				No. 6	0.141"	0.295"	0.016" to 0.022"	—	ASME B18.21.1	5	91108A140	0000
				No. 8	0.168"	0.340"	0.018" to 0.023"	—	ASME B18.21.1	5	91108A220	0000
				No. 10	0.195"	0.381"	0.018" to 0.024"	—	ASME B18.21.1	5	91108A250	0000
				1/4"	0.256"	0.478"	0.023" to 0.028"	—	ASME B18.21.1	5	91108A330	0000
				5/16"	0.320"	0.610"	0.028" to 0.034"	—	ASME B18.21.1	5	91108A360	0000
				3/8"	0.384"	0.692"	0.032" to 0.040"	—	ASME B18.21.1	5	91108A440	0000
				1/2"	0.530"	0.867"	0.037" to 0.045"	—	ASME B18.21.1	5	91108A111	0000


				Wear-Resistant 400 Series Stainless Steel



						No. 2	0.089"	0.200"	0.010" to 0.016"	—	ASME B18.21.1	100	98449A500	0000


No. 2						0.095"	0.200"	0.010" to 0.016"	—	ASME B18.21.1	1,000	98449A003	00000
No. 3	0.102"					0.232"	0.010" to 0.016"	—	ASME B18.21.1	100	98449A505	0000
No. 4	0.115"					0.270"	0.012" to 0.018"	—	ASME B18.21.1	100	98449A510	0000
No. 4	0.123"					0.270"	0.012" to 0.018"	—	ASME B18.21.1	1,000	98449A005	00000
No. 5	0.136"					0.280"	0.014" to 0.020"	—	ASME B18.21.1	100	98449A515	0000
No. 5	0.136"					0.280"	0.014" to 0.020"	—	ASME B18.21.1	1,000	98449A006	00000
No. 6	0.141"					0.295"	0.016" to 0.022"	—	ASME B18.21.1	100	98449A520	0000
No. 6	0.150"					0.295"	0.016" to 0.022"	—	ASME B18.21.1	1,000	98449A007	00000
No. 8	0.168"					0.340"	0.018" to 0.023"	—	ASME B18.21.1	100	98449A525	0000
No. 9	0.176"					0.340"	0.018" to 0.023"	—	ASME B18.21.1	1,000	98449A009	00000


No. 10	0.195"					0.381"	0.018" to 0.024"	—	ASME B18.21.1	100	98449A530	0000
No. 10	0.204"					0.381"	0.018" to 0.024"	—	ASME B18.21.1	1,000	98449A011	00000
No. 12	0.221"					0.410"	0.020" to 0.027"	—	ASME B18.21.1	100	98449A535	0000
1/4"	0.256"					0.478"	0.023" to 0.028"	—	ASME B18.21.1	100	98449A540	0000
1/4"	0.267"					0.478"	0.023" to 0.028"	—	ASME B18.21.1	1,000	98449A029	00000
5/16"	0.320"					0.610"	0.028" to 0.034"	—	ASME B18.21.1	100	98449A030	0000
3/8"	0.384"					0.692"	0.032" to 0.040"	—	ASME B18.21.1	100	98449A031	00000
7/16"	0.448"					0.789"	0.032" to 0.040"	—	ASME B18.21.1	100	98449A032	00000
1/2"	0.512"					0.900"	0.037" to 0.045"	—	ASME B18.21.1	50	98449A033	00000
9/16"	0.576"					0.985"	0.037" to 0.045"	—	ASME B18.21.1	50	98449A034	00000


5/8"	0.640"					1.071"	0.042" to 0.050"	—	ASME B18.21.1	25	98449A035	00000
3/4"	0.769"					1.245"	0.047" to 0.055"	—	ASME B18.21.1	25	98449A036	00000
7/8"	0.927"					1.410"	0.052" to 0.060"	—	ASME B18.21.1	5	98449A113	0000
1"	1.060"					1.640"	0.059" to 0.067"	—	ASME B18.21.1	5	98449A114	00000


Zinc-Plated Steel



						No. 2	0.089"	0.200"	0.010" to 0.016"	—	ASME B18.21.1	100	91113A003	0000


						No. 3	0.102"	0.232"	0.010" to 0.016"	—	ASME B18.21.1	100	91113A004	0000
						No. 4	0.115"	0.270"	0.012" to 0.018"	—	ASME B18.21.1	100	91113A005	0000
						No. 5	0.129"	0.280"	0.014" to 0.020"	—	ASME B18.21.1	100	91113A006	0000
						No. 6	0.141"	0.295"	0.016" to 0.022"	—	ASME B18.21.1	100	91113A007	0000
						No. 8	0.168"	0.340"	0.018" to 0.023"	—	ASME B18.21.1	100	91113A009	0000
						No. 10	0.195"	0.381"	0.018" to 0.024"	—	ASME B18.21.1	100	91113A011	0000
		No. 12				0.221"	0.410"	0.020" to 0.027"	—	ASME B18.21.1	100	91113A013	0000
		1/4"	0.256"			0.478"	0.023" to 0.028"	—	ASME B18.21.1	100	91113A029	0000
		1/4"	0.256"			0.536"	0.034" to 0.044"	SAE Grade 8	ASME B18.21.1	100	91150A110	00000
		5/16"	0.320"			0.607"	0.028" to 0.034"	—	ASME B18.21.1	50	91113A041	0000


		5/16"	0.320"			0.607"	0.040" to 0.050"	SAE Grade 8	ASME B18.21.1	50	91150A113	00000
		3/8"	0.384"			0.681"	0.032" to 0.040"	—	ASME B18.21.1	50	91113A042	0000
		3/8"	0.384"			0.747"	0.040" to 0.050"	SAE Grade 8	ASME B18.21.1	25	91150A114	00000
		7/16"	0.448"			0.764"	0.032" to 0.040"	—	ASME B18.21.1	50	91113A032	0000
		1/2"	0.512"			0.883"	0.037" to 0.045"	—	ASME B18.21.1	50	91113A033	0000
		1/2"	0.512"			0.923"	0.054" to 0.070"	SAE Grade 8	ASME B18.21.1	10	91150A120	00000
		9/16"	0.576"			0.985"	0.037" to 0.045"	—	ASME B18.21.1	50	91113A034	0000
		5/8"	0.640"			1.071"	0.042" to 0.050"	—	ASME B18.21.1	50	91113A035	00000
		5/8"	0.640"			1.134"	0.054" to 0.070"	SAE Grade 8	ASME B18.21.1	5	91150A126	00000
		3/4"	0.769"			1.245"	0.047" to 0.055"	—	ASME B18.21.1	25	91113A036	0000


		3/4"	0.769"	1.260"	0.073" to 0.083"	SAE Grade 8	ASME B18.21.1	5	91150A130	00000
		7/8"	0.894"	1.410"	0.052" to 0.060"	—	ASME B18.21.1	25	91113A037	00000
		1"	1.019"	1.613"	0.059" to 0.067"	—	ASME B18.21.1	10	91113A038	0000
		1 1/8"	1.144"	1.830"	0.059" to 0.067"	—	ASME B18.21.1	10	91113A039	00000
		1 1/4"	1.275"	1.975"	0.059" to 0.067"	—	ASME B18.21.1	5	91113A040	00000
		1 3/8"	1.394"	1.950"	0.060" to 0.064"	—	ASME B18.21.1	1	91113A051	0000
		1 1/2"	1.500"	2.515"	0.076" to 0.080"	—	ASME B18.21.1	1	91113A063	0000
		M2	2.2 mm	4.5 mm	0.2 mm to 0.4 mm	—	DIN 6797	100	93925A415	0000
		M2.5	2.7 mm	5.5 mm	0.2 mm to 0.5 mm	—	DIN 6797	100	93925A416	0000
		M3	3.2 mm	6.0 mm	0.3 mm to 0.5 mm	—	DIN 6797	100	93925A417	0000


		M3.5	3.7 mm	7.0 mm	0.4 mm to 0.6 mm	—	DIN 6797	100	93925A418	0000
		M4	4.3 mm	8.0 mm	0.4 mm to 0.6 mm	—	DIN 6797	100	93925A419	0000
		M5	5.3 mm	10.0 mm	0.5 mm to 0.7 mm	—	DIN 6797	100	93925A420	0000
		M6	6.4 mm	11.0 mm	0.6 mm to 0.8 mm	—	DIN 6797	100	93925A421	0000
		M7	7.4 mm	12.5 mm	0.7 mm to 0.9 mm	—	DIN 6797	100	93925A422	0000
		M8	8.4 mm	15.0 mm	0.7 mm to 0.9 mm	—	DIN 6797	100	93925A423	0000
		M10	10.5 mm	18.0 mm	0.8 mm to 1.0 mm	—	DIN 6797	50	93925A424	0000
		M12	13.0 mm	20.5 mm	0.9 mm to 1.2 mm	—	DIN 6797	50	93925A425	00000
		M14	15.0 mm	24.0 mm	0.9 mm to 1.2 mm	—	DIN 6797	25	93925A426	0000
		M16	17.0 mm	26.0 mm	1.0 mm to 1.4 mm	—	DIN 6797	25	93925A427	0000


		M18	19.0 mm	30.0 mm	1.2 mm to 1.5 mm	—	DIN 6797	10	93925A428	0000
		M20	21.0 mm	33.0 mm	1.2 mm to 1.5 mm	—	DIN 6797	10	93925A429	00000
		M24	25.0 mm	38.0 mm	1.3 mm to 1.6 mm	—	DIN 6797	10	93925A430	00000


		Black-Oxide Steel



				M2	2.2 mm	4.5 mm	0.2 mm to 0.4 mm	—	DIN 6797	100	91106A120	0000


M2.5	2.7 mm			5.5 mm	0.2 mm to 0.5 mm	—	DIN 6797	100	91106A150	0000
M2.6	2.8 mm			5.5 mm	0.3 mm to 0.5 mm	—	DIN 6797	100	91106A121	0000
M3	3.2 mm			6.0 mm	0.3 mm to 0.5 mm	—	DIN 6797	100	91106A122	0000
M3.5	3.7 mm			7.0 mm	0.4 mm to 0.6 mm	—	DIN 6797	100	91106A123	0000
M4	4.3 mm			8.0 mm	0.4 mm to 0.6 mm	—	DIN 6797	100	91106A124	0000
M5	5.3 mm			10.0 mm	0.5 mm to 0.7 mm	—	DIN 6797	100	91106A126	0000
M6	6.4 mm			11.0 mm	0.6 mm to 0.8 mm	—	DIN 6797	100	91106A128	0000
M8	8.4 mm			15.0 mm	0.7 mm to 0.9 mm	—	DIN 6797	100	91106A131	0000
M10	10.5 mm			18.0 mm	0.8 mm to 1.0 mm	—	DIN 6797	50	91106A133	0000
M12	13.0 mm			20.5 mm	0.9 mm to 1.2 mm	—	DIN 6797	50	91106A135	0000


M14	15.0 mm			24.0 mm	0.9 mm to 1.2 mm	—	DIN 6797	25	91106A137	0000
M16	17.0 mm			26.0 mm	1.0 mm to 1.4 mm	—	DIN 6797	25	91106A139	0000
M18	19.0 mm			30.0 mm	1.2 mm to 1.5 mm	—	DIN 6797	10	91106A142	0000
M20	21.0 mm			33.0 mm	1.2 mm to 1.5 mm	—	DIN 6797	10	91106A146	00000


Highly Corrosion-Resistant Phosphor Bronze



				No. 2	0.089"	0.200"	0.010" to 0.016"	—	ASME B18.21.1	100	92165A002	0000


				No. 3	0.109"	0.232"	0.010" to 0.016"	—	ASME B18.21.1	100	92165A121	0000
				No. 4	0.115"	0.270"	0.012" to 0.018"	—	ASME B18.21.1	100	92165A005	0000
				No. 5	0.136"	0.280"	0.014" to 0.018"	—	ASME B18.21.1	100	92165A122	0000
				No. 6	0.141"	0.295"	0.016" to 0.022"	—	ASME B18.21.1	100	92165A007	0000
				No. 8	0.168"	0.340"	0.018" to 0.023"	—	ASME B18.21.1	100	92165A009	0000
				No. 10	0.195"	0.381"	0.018" to 0.024"	—	ASME B18.21.1	100	92165A011	0000
				No. 12	0.231"	0.410"	0.020" to 0.027"	—	ASME B18.21.1	100	92165A123	0000
				1/4"	0.256"	0.478"	0.023" to 0.028"	—	ASME B18.21.1	100	92165A029	00000
				5/16"	0.320"	0.610"	0.028" to 0.034"	—	ASME B18.21.1	50	92165A030	0000
				3/8"	0.384"	0.692"	0.032" to 0.040"	—	ASME B18.21.1	50	92165A031	00000


				7/16"	0.448"	0.789"	0.032" to 0.040"	—	ASME B18.21.1	25	92165A032	0000
				1/2"	0.512"	0.900"	0.037" to 0.045"	—	ASME B18.21.1	25	92165A033	00000
				5/8"	0.640"	1.071"	0.042" to 0.050"	—	ASME B18.21.1	5	92165A055	0000
				3/4"	0.795"	1.245"	0.047" to 0.055"	—	ASME B18.21.1	5	92165A124	0000

Internal and External Tooth

The strongest hold of all our tooth lock washers, these combine internal and external teeth to boost gripping power. However, the teeth may mar your material and snag on objects. Pair these washers with fasteners that are large enough to make contact with the external teeth, such as pan, button, and binding head screws.

Wear-Resistant 410 Stainless Steel—These grip hard material better than other types of stainless steel. They are not as corrosion resistant as 18-8 and 316 stainless steel, so they are best for environments that experience occasional moisture.

Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.

	ID	OD	Thk.	Specs. Met	Pkg. Qty.		Pkg.
Wear-Resistant 410 Stainless Steel



	No. 4	0.115"	0.475"	0.016" to 0.021"	ASME B18.21.1	100	90588A111	00000


	No. 6	0.141"	0.510"	0.023" to 0.028"	ASME B18.21.1	100	90588A112	0000
	No. 8	0.168"	0.610"	0.028" to 0.034"	ASME B18.21.1	100	90588A113	0000
	No. 10	0.195"	0.610"	0.028" to 0.034"	ASME B18.21.1	100	90588A114	0000
	1/4"	0.256"	0.760"	0.032" to 0.040"	ASME B18.21.1	50	90588A115	0000
	5/16"	0.320"	0.900"	0.032" to 0.040"	ASME B18.21.1	50	90588A116	0000
	3/8"	0.384"	0.985"	0.037" to 0.045"	ASME B18.21.1	25	90588A117	0000
	1/2"	0.512"	1.260"	0.047" to 0.055"	ASME B18.21.1	10	90588A118	0000


	Zinc-Plated Steel



			No. 4	0.116"	0.478"	0.016" to 0.018"	ASME B18.21.1	50	95795A005	00000


			No. 6	0.142"	0.506"	0.023" to 0.027"	ASME B18.21.1	50	95795A006	0000
			No. 8	0.168"	0.506"	0.023" to 0.027"	ASME B18.21.1	100	95795A007	00000
			No. 10	0.195"	0.601"	0.027" to 0.031"	ASME B18.21.1	100	95795A012	00000
			1/4"	0.256"	0.760"	0.033" to 0.037"	ASME B18.21.1	100	95795A020	00000
			5/16"	0.320"	0.898"	0.033" to 0.037"	ASME B18.21.1	50	95795A024	00000
			3/8"	0.384"	0.985"	0.037" to 0.041"	ASME B18.21.1	50	95795A030	00000
			7/16"	0.448"	1.070"	0.043" to 0.047"	ASME B18.21.1	10	95795A032	0000
			1/2"	0.512"	1.260"	0.048" to 0.052"	ASME B18.21.1	25	95795A035	00000
			5/8"	0.640"	1.620"	0.060" to 0.064"	ASME B18.21.1	5	95795A053	00000
			M3	3.2 mm	12.0 mm	1.4 mm to 1.7 mm	—	50	95795A111	00000


			M4	4.3 mm	15.0 mm	1.9 mm to 2.3 mm	—	50	95795A112	00000
			M4	4.3 mm	18.0 mm	2.2 mm to 2.6 mm	—	25	95795A113	00000
			M5	5.3 mm	18.0 mm	2.2 mm to 2.6 mm	—	25	95795A114	00000
			M6	6.5 mm	18.0 mm	2.2 mm to 2.6 mm	—	25	95795A115	00000
			M8	8.5 mm	22.0 mm	2.7 mm to 3.3 mm	—	25	95795A116	00000
			M10	10.5 mm	26.0 mm	2.7 mm to 3.3 mm	—	10	95795A117	00000
			M12	12.5 mm	30.0 mm	3.2 mm to 4.0 mm	—	10	95795A118	00000
			M16	16.5 mm	35.0 mm	3.8 mm to 4.6 mm	—	5	95795A119	00000


			Black-Oxide Steel



					No. 6	0.142"	0.506"	0.023" to 0.027"	ASME B18.21.1	100	90416A111	0000


					No. 8	0.168"	0.506"	0.023" to 0.027"	ASME B18.21.1	100	90416A112	00000
					1/4"	0.256"	0.760"	0.033" to 0.037"	ASME B18.21.1	100	90416A114	00000
					5/16"	0.320"	0.898"	0.033" to 0.037"	ASME B18.21.1	50	90416A115	00000
					3/8"	0.384"	0.985"	0.037" to 0.041"	ASME B18.21.1	25	90416A116	00000
					7/16"	0.448"	1.070"	0.043" to 0.047"	ASME B18.21.1	25	90416A117	00000
					1/2"	0.512"	1.260"	0.048" to 0.052"	ASME B18.21.1	10	90416A118	0000

Split Lock Washers for Socket Head Screws

Stop socket head screws from loosening due to mild vibration. These washers have a small diameter to fit under screws with narrow heads, but are still thick enough to keep fasteners secure. While they're not as vibration resistant as other lock washers, they are a great fit for electrical panels, light fixtures, and other light duty assemblies. Split lock washers are not reusable, and they only work with fasteners that have right-hand threads. Also known as high-collar lock washers.

Highly Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these washers won't degrade when exposed to harsh weather, salt water, and most chemicals.

Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.

Zinc-Yellow-Chromate-Plated Steel—With the same corrosion resistance as zinc-plated steel, these withstand occasional exposure to moisture.

Steel—Best for dry environments since moisture will cause these washers to rust.

	For Screw Size	ID	OD	Thk.	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel



		No. 2	0.094"	0.142"	0.022"	—	100	98437A180	00000


		No. 4	0.120"	0.173"	0.022"	ASME B18.21.1	100	98437A102	0000
		No. 5	0.133"	0.202"	0.030"	ASME B18.21.1	100	98437A160	0000
		No. 6	0.148"	0.216"	0.030"	ASME B18.21.1	100	98437A104	0000
		No. 8	0.174"	0.267"	0.047"	ASME B18.21.1	100	98437A106	0000
		No. 10	0.200"	0.294"	0.047"	ASME B18.21.1	100	98437A108	0000
		No. 12	0.227"	0.331"	0.078"	—	100	98437A190	0000
		1/4"	0.260"	0.363"	0.078"	ASME B18.21.1	100	98437A110	0000
		5/16"	0.322"	0.457"	0.093"	ASME B18.21.1	50	98437A112	0000
		3/8"	0.385"	0.550"	0.125"	ASME B18.21.1	50	98437A115	00000
		7/16"	0.450"	0.644"	0.140"	ASME B18.21.1	50	98437A170	00000


		1/2"	0.512"	0.733"	0.172"	ASME B18.21.1	25	98437A130	0000
		5/8"	0.641"	0.917"	0.203"	ASME B18.21.1	10	98437A135	0000
		3/4"	0.766"	1.105"	0.218"	ASME B18.21.1	10	98437A140	00000
		7/8"	0.894"	1.291"	0.234"	ASME B18.21.1	5	98437A150	00000
		1"	1.024"	1.478"	0.250"	ASME B18.21.1	1	98437A210	0000
		M3	3.4 mm	5.6 mm	0.9 mm to 1.1 mm	DIN 7980	100	91111A118	0000
		M3.5	3.9 mm	6.1 mm	0.9 mm to 1.1 mm	DIN 7980	100	91111A119	0000
		M4	4.4 mm	7.0 mm	1.1 mm to 1.3 mm	DIN 7980	100	91111A121	0000
		M5	5.4 mm	8.8 mm	1.5 mm to 1.7 mm	DIN 7980	100	91111A124	0000
		M6	6.5 mm	9.9 mm	1.5 mm to 1.7 mm	DIN 7980	100	91111A129	0000


		M8	8.5 mm	12.7 mm	1.9 mm to 2.1 mm	DIN 7980	100	91111A132	00000
		M10	10.7 mm	16.0 mm	2.3 mm to 2.7 mm	DIN 7980	100	91111A135	00000
		M12	12.7 mm	18.0 mm	2.3 mm to 2.7 mm	DIN 7980	50	91111A138	0000
		M14	14.7 mm	21.1 mm	2.8 mm to 3.2 mm	DIN 7980	10	91111A141	0000
		M16	17.0 mm	24.4 mm	3.3 mm to 3.7 mm	DIN 7980	10	91111A143	0000
		M18	19.0 mm	26.4 mm	3.3 mm to 3.7 mm	DIN 7980	10	91111A145	0000
		M20	21.2 mm	30.6 mm	4.3 mm to 4.7 mm	DIN 7980	10	91111A147	0000
		M22	23.5 mm	32.9 mm	4.3 mm to 4.7 mm	DIN 7980	5	91111A149	00000
		M24	25.5 mm	35.9 mm	4.8 mm to 5.2 mm	DIN 7980	5	91111A151	0000
		M30	31.7 mm	44.1 mm	5.8 mm to 6.2 mm	DIN 7980	1	91111A155	00000


		Black-Oxide 18-8 Stainless Steel



				No. 4	0.120"	0.173"	0.022"	ASME B18.21.1	100	93711A100	00000


				No. 6	0.148"	0.216"	0.030"	ASME B18.21.1	100	93711A200	00000
				No. 8	0.174"	0.267"	0.047"	ASME B18.21.1	100	93711A300	00000
				No. 10	0.200"	0.294"	0.047"	ASME B18.21.1	50	93711A400	0000
				1/4"	0.260"	0.363"	0.078"	ASME B18.21.1	50	93711A500	00000
				5/16"	0.322"	0.457"	0.093"	ASME B18.21.1	25	93711A600	0000
				3/8"	0.385"	0.550"	0.125"	ASME B18.21.1	10	93711A700	0000
				1/2"	0.512"	0.733"	0.172"	ASME B18.21.1	10	93711A800	0000
				5/8"	0.641"	0.917"	0.203"	ASME B18.21.1	5	93711A900	00000
				3/4"	0.766"	1.105"	0.218"	ASME B18.21.1	1	93711A910	0000


				Highly Corrosion-Resistant 316 Stainless Steel



No. 2						0.094"	0.142"	0.022"	—	100	94241A210	0000


No. 4	0.120"					0.173"	0.022"	ASME B18.21.1	100	94241A220	0000
No. 5	0.133"					0.202"	0.030"	ASME B18.21.1	100	94241A230	0000
No. 6	0.148"					0.216"	0.030"	ASME B18.21.1	100	94241A240	0000
No. 8	0.174"					0.267"	0.047"	ASME B18.21.1	100	94241A250	0000
No. 10	0.200"					0.294"	0.047"	ASME B18.21.1	100	94241A260	0000
1/4"	0.260"					0.363"	0.078"	ASME B18.21.1	100	94241A270	0000
5/16"	0.322"					0.457"	0.093"	ASME B18.21.1	50	94241A280	0000
3/8"	0.385"					0.550"	0.125"	ASME B18.21.1	50	94241A290	00000
7/16"	0.450"					0.644"	0.140"	ASME B18.21.1	25	94241A310	00000
1/2"	0.512"					0.733"	0.172"	ASME B18.21.1	10	94241A320	0000


5/8"	0.641"					0.917"	0.203"	ASME B18.21.1	10	94241A330	00000
3/4"	0.766"					1.105"	0.218"	ASME B18.21.1	5	94241A340	00000
7/8"	0.894"					1.291"	0.234"	ASME B18.21.1	1	94241A350	0000
1"	1.024"					1.478"	0.250"	ASME B18.21.1	1	94241A360	0000
1 1/4"	1.280"					1.790"	0.313"	ASME B18.21.1	1	94241A370	0000
1 1/2"	1.534"					2.159"	0.375"	ASME B18.21.1	1	94241A380	00000
M3	3.4 mm					5.6 mm	0.9 mm to 1.1 mm	DIN 7980	100	94241A510	0000
M4	4.4 mm					7.0 mm	1.1 mm to 1.3 mm	DIN 7980	100	94241A520	0000
M5	5.4 mm					8.8 mm	1.5 mm to 1.7 mm	DIN 7980	100	94241A530	0000
M6	6.5 mm					9.9 mm	1.5 mm to 1.7 mm	DIN 7980	100	94241A540	0000


M8	8.5 mm					12.7 mm	1.9 mm to 2.1 mm	DIN 7980	50	94241A550	0000
M10	10.7 mm					16.0 mm	2.3 mm to 2.7 mm	DIN 7980	50	94241A560	00000
M12	12.7 mm					18.0 mm	2.3 mm to 2.7 mm	DIN 7980	25	94241A570	0000
M14	14.7 mm					21.1 mm	2.8 mm to 3.2 mm	DIN 7980	10	94241A580	0000
M16	17.0 mm					24.4 mm	3.3 mm to 3.7 mm	DIN 7980	10	94241A590	0000
M18	19.0 mm					26.4 mm	3.3 mm to 3.7 mm	DIN 7980	10	94241A610	0000
M20	21.2 mm					30.6 mm	4.3 mm to 4.7 mm	DIN 7980	1	94241A620	0000
M22	23.5 mm					32.9 mm	4.3 mm to 4.7 mm	DIN 7980	1	94241A630	0000
M24	25.5 mm					35.9 mm	4.8 mm to 5.2 mm	DIN 7980	1	94241A640	0000
M30	31.7 mm					44.1 mm	5.8 mm to 6.2 mm	DIN 7980	1	94241A650	0000


Zinc-Plated Steel



						No. 6	0.148"	0.216"	0.030"	ASME B18.21.1	50	92961A111	0000


		No. 8	0.174"			0.267"	0.042"	ASME B18.21.1	50	92961A112	0000
		No. 10	0.200"			0.294"	0.047"	ASME B18.21.1	50	92961A113	0000
		1/4"	0.260"			0.363"	0.078"	ASME B18.21.1	50	92961A114	0000
		5/16"	0.322"			0.457"	0.093"	ASME B18.21.1	50	92961A115	0000
		3/8"	0.385"			0.550"	0.125"	ASME B18.21.1	50	92961A116	0000
		7/16"	0.450"			0.644"	0.140"	ASME B18.21.1	25	92961A117	00000
		1/2"	0.512"			0.733"	0.172"	ASME B18.21.1	25	92961A118	0000
		5/8"	0.641"			0.917"	0.203"	ASME B18.21.1	25	92961A119	00000
		3/4"	0.766"			1.105"	0.218"	ASME B18.21.1	10	92961A120	0000
		7/8"	0.984"			1.291"	0.234"	ASME B18.21.1	5	92961A121	0000


		1"	1.024"			1.478"	0.250"	ASME B18.21.1	1	92961A122	00000
		M3	3.4 mm			5.6 mm	0.9 mm to 1.1 mm	DIN 7980	100	93837A110	0000
		M4	4.4 mm			7.0 mm	1.1 mm to 1.3 mm	DIN 7980	100	93837A120	0000
		M5	5.4 mm			8.8 mm	1.5 mm to 1.7 mm	DIN 7980	100	93837A130	0000
		M6	6.5 mm	9.9 mm		1.5 mm to 1.7 mm	DIN 7980	100	93837A140	0000
		M8	8.5 mm	12.7 mm	1.9 mm to 2.1 mm	DIN 7980	100	93837A230	0000
		M10	10.7 mm	16.0 mm	2.3 mm to 2.7 mm	DIN 7980	100	93837A150	00000
		M12	12.7 mm	18.0 mm	2.3 mm to 2.7 mm	DIN 7980	100	93837A240	00000
		M14	14.7 mm	21.1 mm	2.8 mm to 3.2 mm	DIN 7980	50	93837A250	0000
		M16	17.0 mm	24.4 mm	3.3 mm to 3.7 mm	DIN 7980	25	93837A160	0000


		M18	19.0 mm	26.4 mm	3.3 mm to 3.7 mm	DIN 7980	25	93837A170	00000
		M20	21.2 mm	30.6 mm	4.3 mm to 4.7 mm	DIN 7980	10	93837A180	0000
		M24	25.5 mm	35.9 mm	4.8 mm to 5.2 mm	DIN 7980	10	93837A190	0000
		M27	28.5 mm	38.9 mm	4.8 mm to 5.2 mm	DIN 7980	5	93837A260	0000
		M30	31.7 mm	44.1 mm	5.8 mm to 6.2 mm	DIN 7980	5	93837A210	00000
		M36	37.7 mm	52.2 mm	6.7 mm to 7.3 mm	DIN 7980	1	93837A220	0000


		Zinc-Yellow-Chromate-Plated Steel



				M4	4.1 mm	7.0 mm	1.1 mm to 1.3 mm	DIN 7980	100	93837A310	0000


				M5	5.1 mm	8.8 mm	1.5 mm to 1.7 mm	DIN 7980	25	93837A320	00000
				M6	6.1 mm	9.9 mm	1.5 mm to 1.7 mm	DIN 7980	100	93837A330	0000
				M8	8.1 mm	12.7 mm	1.9 mm to 2.1 mm	DIN 7980	100	93837A340	0000
				M10	10.2 mm	16.0 mm	2.3 mm to 2.7 mm	DIN 7980	100	93837A350	00000
				M12	12.2 mm	18.0 mm	2.3 mm to 2.7 mm	DIN 7980	100	93837A360	00000
				M16	16.2 mm	24.4 mm	3.3 mm to 3.7 mm	DIN 7980	25	93837A370	00000


				Black-Oxide Steel



						No. 4	0.117"	0.173"	0.022"	ASME B18.21.1	50	92962A210	0000


						No. 6	0.145"	0.216"	0.030"	ASME B18.21.1	50	92962A220	0000
						No. 8	0.174"	0.267"	0.042"	ASME B18.21.1	50	92962A111	0000
						No. 10	0.200"	0.294"	0.047"	ASME B18.21.1	50	92962A112	0000
						1/4"	0.260"	0.363"	0.078"	ASME B18.21.1	50	92962A113	0000
5/16"						0.322"	0.457"	0.093"	ASME B18.21.1	50	92962A114	0000
3/8"	0.385"					0.550"	0.125"	ASME B18.21.1	10	92962A115	0000
7/16"	0.450"					0.644"	0.140"	ASME B18.21.1	25	92962A116	0000
1/2"	0.512"					0.733"	0.172"	ASME B18.21.1	25	92962A117	0000
5/8"	0.641"					0.917"	0.203"	ASME B18.21.1	10	92962A118	00000
3/4"	0.766"					1.105"	0.218"	ASME B18.21.1	5	92962A119	0000


7/8"	0.984"					1.291"	0.234"	ASME B18.21.1	5	92962A120	0000
1"	1.024"					1.478"	0.250"	ASME B18.21.1	1	92962A121	0000
1 1/8"	1.153"					1.663"	0.313"	ASME B18.21.1	1	92962A122	0000
1 1/4"	1.280"					1.790"	0.313"	ASME B18.21.1	1	92962A123	0000
M3	3.4 mm					5.6 mm	0.9 mm to 1.1 mm	DIN 7980	100	91190A510	0000
M3.5	3.9 mm					6.1 mm	0.9 mm to 1.1 mm	DIN 7980	100	91190A515	0000
M4	4.4 mm					7.0 mm	1.1 mm to 1.3 mm	DIN 7980	100	91190A520	0000
M5	5.4 mm					8.8 mm	1.5 mm to 1.7 mm	DIN 7980	100	91190A530	0000
M6	6.5 mm					9.9 mm	1.5 mm to 1.7 mm	DIN 7980	100	91190A540	0000
M8	8.5 mm					12.7 mm	1.9 mm to 2.1 mm	DIN 7980	100	91190A550	0000


M10	10.7 mm					16.0 mm	2.3 mm to 2.7 mm	DIN 7980	100	91190A560	00000
M12	12.7 mm					18.0 mm	2.3 mm to 2.7 mm	DIN 7980	100	91190A570	00000
M14	14.7 mm					21.1 mm	2.8 mm to 3.2 mm	DIN 7980	100	91190A580	00000
M16	17.0 mm					24.4 mm	3.3 mm to 3.7 mm	DIN 7980	50	91190A590	00000
M18	19.0 mm					26.4 mm	3.3 mm to 3.7 mm	DIN 7980	25	91190A600	00000
M20	21.2 mm					30.6 mm	4.3 mm to 4.7 mm	DIN 7980	25	91190A610	00000
M22	23.5 mm					32.9 mm	4.3 mm to 4.7 mm	DIN 7980	10	91190A620	0000
M24	25.5 mm					35.9 mm	4.8 mm to 5.2 mm	DIN 7980	10	91190A630	0000
M27	28.5 mm					38.9 mm	4.8 mm to 5.2 mm	DIN 7980	5	91190A650	0000
M30	31.7 mm					44.1 mm	5.8 mm to 6.2 mm	DIN 7980	5	91190A670	0000


M36	37.7 mm					52.2 mm	6.7 mm to 7.3 mm	DIN 7980	1	91190A690	0000
M42	43.7 mm					60.2 mm	7.7 mm to 8.3 mm	DIN 7980	1	91190A660	00000
M48	50.5 mm					67.0 mm	7.7 mm to 8.3 mm	DIN 7980	1	91190A640	00000


Steel



		No. 4	0.120"			0.173"	0.022"	ASME B18.21.1	100	90073A005	0000


		No. 5	0.133"			0.202"	0.030"	ASME B18.21.1	100	90073A006	0000
		No. 6	0.148"			0.216"	0.030"	ASME B18.21.1	100	90073A007	0000
		No. 10	0.200"			0.294"	0.047"	ASME B18.21.1	100	90073A011	0000
		1/4"	0.260"			0.363"	0.078"	ASME B18.21.1	100	90073A029	0000
		5/16"	0.322"			0.457"	0.093"	ASME B18.21.1	100	90073A030	0000
		3/8"	0.385"			0.550"	0.125"	ASME B18.21.1	100	90073A231	0000
		7/16"	0.450"			0.644"	0.140"	ASME B18.21.1	100	90073A234	00000
		1/2"	0.512"			0.733"	0.172"	ASME B18.21.1	100	90073A237	00000
		5/8"	0.641"			0.917"	0.203"	ASME B18.21.1	50	90073A240	00000
		3/4"	0.766"			1.105"	0.218"	ASME B18.21.1	25	90073A243	00000


		7/8"	0.894"	1.291"	0.234"	ASME B18.21.1	25	90073A246	00000
		1"	1.024"	1.478"	0.250"	ASME B18.21.1	10	90073A038	0000
		1 1/8"	1.153"	1.663"	0.313"	ASME B18.21.1	5	90073A333	00000
		1 1/4"	1.280"	1.790"	0.313"	ASME B18.21.1	10	90073A040	00000
		1 1/2"	1.534"	2.159"	0.375"	ASME B18.21.1	5	90073A042	00000

Extreme-Vibration-Resistant Wedge Lock Washers

When it's critical to keep bolted assemblies secure, choose these two-piece lock washers with the tightest grip of all. They stop nuts and screws from loosening in heavy machinery that experiences jarring starts and stops, such as compressors and compactors. Serrations on the outside bite into the fastener and mating surfaces, while wedges on the inside lock the two pieces together. When the nut or screw starts to loosen, the wedges drive more tightly together to maintain tension. You can reuse these washers up to fifteen times, as long as the serrations and wedges are not worn down. They are comparable to NORD-LOCK® or Sherex TEC® washers.

Wedge Lock

Highly Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these washers won't degrade when exposed to harsh weather, salt water, and most chemicals.

Highly Corrosion-Resistant Black-Oxide 316 Stainless Steel—Combines a finished appearance with the rust resistance of 316 stainless steel. Even if the coating wears off, these washers will hold up in just about any environment, including salt water and most chemicals.

Black Highly Corrosion-Resistant Zinc-Flake-Coated Steel—Typically chosen for their appearance, these washers have a dark, matte coating to create a finished look. With 40 times the corrosion resistance of zinc-plated steel, these withstand rust as well as 316 stainless steel. They have been tested to extreme standards, including 600 hours of salt spray. Similar to Magni-coated washers.

	For Screw Size	ID	OD	Thk.	Pkg. Qty.		Pkg.
Highly Corrosion-Resistant 316 Stainless Steel



		No. 5, M3	0.130"	0.280"	0.080" to 0.100"	5	91812A212	000000


		No. 6, M3.5	0.150"	0.300"	0.080" to 0.100"	1	91812A338	0000
		No. 6, M3.5	0.150"	0.350"	0.080" to 0.100"	1	91812A393	0000
		No. 8, M4	0.170"	0.300"	0.080" to 0.100"	5	91812A215	00000
		No. 8, M4	0.170"	0.350"	0.080" to 0.100"	5	91812A415	00000
		No. 10, M5	0.210"	0.350"	0.080" to 0.100"	5	91812A227	00000
		No. 10, M5	0.210"	0.430"	0.080" to 0.100"	5	91812A427	00000
		1/4"	0.280"	0.450"	0.080" to 0.100"	5	91812A229	00000
		1/4"	0.280"	0.530"	0.080" to 0.100"	5	91812A429	0000
		5/16", M8	0.340"	0.530"	0.070" to 0.090"	5	91812A230	00000
		5/16", M8	0.340"	0.650"	0.070" to 0.090"	5	91812A430	00000


		3/8"	0.410"	0.650"	0.070" to 0.090"	5	91812A231	00000
		3/8"	0.410"	0.830"	0.070" to 0.090"	1	91812A431	0000
		7/16", M11	0.450"	0.730"	0.080" to 0.100"	1	91812A232	0000
		1/2"	0.530"	0.770"	0.070" to 0.090"	1	91812A233	0000
		1/2"	0.530"	1.000"	0.120" to 0.140"	1	91812A433	0000
		9/16", M14	0.600"	0.910"	0.110" to 0.130"	1	91812A214	0000
		9/16", M14	0.600"	1.210"	0.120" to 0.140"	1	91812A486	0000
		5/8", M16	0.670"	1.000"	0.110" to 0.130"	1	91812A235	0000
		5/8", M16	0.670"	1.210"	0.120" to 0.140"	1	91812A435	0000
		3/4"	0.790"	1.210"	0.120" to 0.140"	1	91812A664	0000


		3/4"	0.790"	1.540"	0.120" to 0.140"	1	91812A669	00000
		7/8", M22	0.920"	1.360"	0.120" to 0.140"	1	91812A727	00000
		7/8", M22	0.920"	1.650"	0.120" to 0.140"	1	91812A744	00000
		1"	1.100"	1.540"	0.120" to 0.140"	1	91812A798	00000
		1"	1.100"	1.910"	0.120" to 0.140"	1	91812A799	00000
		1 1/8", M30	1.240"	1.850"	0.260" to 0.280"	1	91812A808	00000
		1 1/8", M30	1.240"	2.300"	0.260" to 0.280"	1	91812A815	00000
		1 1/4", M33	1.350"	1.910"	0.260" to 0.280"	1	91812A819	00000
		1 3/8", M36	1.470"	2.170"	0.260" to 0.280"	1	91812A822	00000
		1 1/2", M39	1.590"	2.300"	0.260" to 0.280"	1	91812A823	00000


		3", M76	3.110"	4.330"	0.340" to 0.360"	1	91812A954	000000
		M6	0.260"	0.430"	0.080" to 0.100"	1	91812A423	0000
		M6	0.260"	0.530"	0.070" to 0.090"	1	91812A454	0000
		M10	0.420"	0.650"	0.070" to 0.090"	1	91812A466	0000
		M10	0.420"	0.830"	0.070" to 0.090"	1	91812A468	0000
		M12	0.510"	0.770"	0.070" to 0.090"	1	91812A474	0000
		M12	0.510"	1.000"	0.110" to 0.130"	1	91812A479	0000
		M18	0.770"	1.140"	0.120" to 0.140"	1	91812A506	0000
		M18	0.770"	1.360"	0.120" to 0.140"	1	91812A609	00000
		M20	0.840"	1.210"	0.110" to 0.130"	1	91812A724	0000


		M20	0.840"	1.540"	0.120" to 0.140"	1	91812A725	00000
		M24	1.000"	1.540"	0.120" to 0.140"	1	91812A790	00000
		M24	1.000"	1.910"	0.120" to 0.140"	1	91812A796	00000
		M27	1.120"	1.650"	0.260" to 0.280"	1	91812A800	00000
		M42	1.700"	2.480"	0.260" to 0.280"	1	91812A829	00000


		Highly Corrosion-Resistant Black-Oxide 316 Stainless Steel



No. 5, M3	0.130"			0.280"	0.080" to 0.100"	5	91812A251	0000


No. 8, M4	0.170"			0.300"	0.080" to 0.100"	5	91812A252	00000
No. 10, M5	0.210"			0.350"	0.080" to 0.100"	5	91812A253	00000
M6	0.260"			0.430"	0.080" to 0.100"	5	91812A254	00000
M8	0.340"			0.650"	0.070" to 0.090"	1	91812A142	0000
M10	0.420"			0.650"	0.070" to 0.090"	5	91812A255	00000
M12	0.510"			0.770"	0.070" to 0.090"	1	91812A256	0000
M16	0.670"			1.210"	0.110" to 0.130"	1	91812A143	00000


Highly Corrosion-Resistant Zinc-Flake-Coated Steel



				No. 5, M3	0.130"	0.280"	0.060" to 0.080"	20	91074A112	00000


				No. 6, M3.5	0.150"	0.300"	0.060" to 0.080"	20	91074A102	00000
				No. 6, M3.5	0.150"	0.350"	0.060" to 0.080"	20	91074A142	00000
				No. 8, M4	0.170"	0.300"	0.060" to 0.080"	20	91074A115	00000
				No. 8, M4	0.170"	0.350"	0.060" to 0.080"	20	91074A312	00000
				No. 10, M5	0.210"	0.350"	0.060" to 0.080"	20	91074A127	00000
				No. 10, M5	0.210"	0.430"	0.060" to 0.080"	20	91074A327	00000
				1/4"	0.280"	0.450"	0.090" to 0.110"	20	91074A129	00000
				1/4"	0.280"	0.530"	0.090" to 0.110"	20	91074A329	00000
				5/16", M8	0.340"	0.530"	0.090" to 0.110"	20	91074A130	00000
				5/16", M8	0.340"	0.650"	0.090" to 0.110"	20	91074A330	00000


				3/8"	0.410"	0.650"	0.090" to 0.110"	20	91074A131	00000
				3/8"	0.410"	0.830"	0.090" to 0.110"	10	91074A331	00000
				7/16", M11	0.450"	0.730"	0.090" to 0.110"	10	91074A132	00000
				1/2"	0.530"	0.770"	0.090" to 0.110"	10	91074A133	00000
				1/2"	0.530"	1.000"	0.120" to 0.140"	8	91074A333	00000
				9/16", M14	0.600"	0.910"	0.120" to 0.140"	10	91074A134	00000
				9/16", M14	0.600"	1.210"	0.120" to 0.140"	4	91074A305	00000
				5/8", M16	0.670"	1.000"	0.120" to 0.140"	8	91074A135	00000
				5/8", M16	0.670"	1.210"	0.120" to 0.140"	4	91074A335	00000
				3/4"	0.790"	1.210"	0.120" to 0.140"	4	91074A136	00000


				3/4"	0.790"	1.540"	0.120" to 0.140"	2	91074A336	00000
				7/8", M22	0.920"	1.360"	0.120" to 0.140"	2	91074A137	00000
				7/8", M22	0.920"	1.650"	0.170" to 0.190"	2	91074A337	00000
				1"	1.100"	1.540"	0.120" to 0.140"	2	91074A138	00000
				1"	1.100"	1.910"	0.170" to 0.190"	1	91074A338	00000
				1 1/8", M30	1.240"	1.850"	0.220" to 0.240"	1	91074A140	00000
				1 1/8", M30	1.240"	2.300"	0.250" to 0.270"	1	91074A360	00000
				1 1/4", M33	1.350"	1.910"	0.220" to 0.240"	1	91074A145	00000
				1 3/8", M36	1.470"	2.170"	0.250" to 0.270"	1	91074A150	00000
				1 1/2", M39	1.590"	2.300"	0.250" to 0.270"	1	91074A160	00000


				1 3/4", M45	1.820"	2.760"	0.270" to 0.290"	1	91074A367	00000
				2", M52	2.110"	3.150"	0.270" to 0.290"	1	91074A371	000000
				2 1/4", M56	2.330"	3.350"	0.270" to 0.290"	1	91074A374	000000
				2 1/2", M64	2.640"	3.740"	0.270" to 0.290"	1	91074A378	000000
				M6	0.260"	0.430"	0.060" to 0.080"	20	91074A151	00000
				M6	0.260"	0.530"	0.090" to 0.110"	20	91074A169	00000
				M10	0.420"	0.650"	0.090" to 0.110"	20	91074A180	00000
		M10		0.420"	0.830"	0.090" to 0.110"	10	91074A211	00000
		M12	0.510"	0.770"	0.090" to 0.110"	10	91074A221	00000
		M12	0.510"	1.000"	0.120" to 0.140"	8	91074A289	00000


		M18	0.770"	1.140"	0.120" to 0.140"	4	91074A308	00000
		M18	0.770"	1.360"	0.120" to 0.140"	2	91074A314	00000
		M20	0.840"	1.210"	0.120" to 0.140"	4	91074A325	00000
		M20	0.840"	1.540"	0.120" to 0.140"	2	91074A328	00000
		M24	1.000"	1.540"	0.120" to 0.140"	2	91074A348	00000
		M24	1.000"	1.910"	0.170" to 0.190"	2	91074A353	00000
		M27	1.120"	1.650"	0.220" to 0.240"	1	91074A354	00000
		M27	1.120"	1.910"	0.220" to 0.240"	1	91074A355	00000
		M42	1.700"	2.480"	0.250" to 0.270"	1	91074A366	00000
		M48	1.950"	2.950"	0.270" to 0.290"	1	91074A370	00000


Black Highly Corrosion-Resistant Zinc-Flake-Coated Steel



		1/4"	0.280"	0.450"	0.090" to 0.110"	10	97913A112	00000


		1/4"	0.280"	0.530"	0.090" to 0.110"	10	97913A123	00000
		5/16", M8	0.340"	0.530"	0.090" to 0.110"	10	97913A113	00000
		3/8"	0.410"	0.650"	0.090" to 0.110"	10	97913A114	00000
		3/8"	0.410"	0.830"	0.090" to 0.110"	5	97913A125	00000
		1/2"	0.530"	0.770"	0.090" to 0.110"	5	97913A117	00000
		1/2"	0.530"	1.000"	0.120" to 0.140"	4	97913A128	00000
		5/8", M16	0.670"	1.000"	0.120" to 0.140"	4	97913A118	00000
		3/4"	0.790"	1.210"	0.120" to 0.140"	4	97913A119	00000
		3/4"	0.790"	1.540"	0.120" to 0.140"	2	97913A131	00000
		1"	1.100"	1.540"	0.120" to 0.140"	2	97913A121	00000


		M6	0.260"	0.430"	0.060" to 0.080"	10	97913A111	00000
		M6	0.260"	0.530"	0.090" to 0.110"	10	97913A122	00000
		M8	0.340"	0.650"	0.090" to 0.110"	10	97913A124	00000
		M10	0.420"	0.650"	0.090" to 0.110"	10	97913A115	00000
		M10	0.420"	0.830"	0.090" to 0.110"	5	97913A126	00000
		M12	0.510"	0.770"	0.090" to 0.110"	5	97913A116	00000
		M12	0.510"	1.000"	0.120" to 0.140"	4	97913A127	00000
		M16	0.670"	1.210"	0.120" to 0.140"	4	97913A129	00000

Spring/Wedge Lock

More flexible than standard wedge lock washers to withstand stronger shocks and vibration. They have a cone shape that expands and compresses to maintain tension in the joint, similar to a heavy duty spring.

	ID	OD	Thk.	Pkg. Qty.		Pkg.
Highly Corrosion-Resistant Zinc-Flake-Coated Steel



	5/16", M8	0.340"	0.530"	0.080" to 0.090"	1	93281A103	00000


	5/16", M8	0.340"	0.650"	0.080" to 0.090"	1	93281A113	0000
	3/8"	0.410"	0.650"	0.090" to 0.100"	1	93281A104	0000
	1/2"	0.530"	0.770"	0.130" to 0.140"	1	93281A107	0000
	5/8", M16	0.670"	1.000"	0.170" to 0.180"	1	93281A109	0000
	3/4"	0.790"	1.210"	0.210" to 0.220"	1	93281A114	0000
	M6	0.260"	0.430"	0.050" to 0.060"	1	93281A101	0000
	M10	0.420"	0.650"	0.100" to 0.110"	1	93281A105	0000
	M12	0.510"	0.770"	0.120" to 0.130"	1	93281A106	0000
	M20	0.840"	1.210"	0.220" to 0.230"	1	93281A112	0000

Mil. Spec. Split Lock Washers

These washers are manufactured and tested to strict U.S. military standards for material and construction. As you tighten, the uneven ends bite into the nut or screw so it won't loosen due to mild vibration. While they don't hold as tightly as other lock washers, they are a great fit for electrical panels, light fixtures, and other light duty assemblies. Split lock washers are not reusable, and they only work with fasteners that have right-hand threads.

Passivated 18-8 Stainless Steel—The choice for wet and outdoor environments, these washers won't rust when exposed to moisture. However, they can't hold up to the harsh chemicals that 316 stainless steel can.

Highly Corrosion-Resistant Passivated 316 Stainless Steel—Superior to 18-8 stainless steel, these washers won't degrade when exposed to harsh weather, salt water, and most chemicals.

Zinc-Yellow-Chromate-Plated Steel—With the same corrosion resistance as zinc-plated steel, these withstand occasional exposure to moisture.

Corrosion-Resistant Cadmium-Plated Steel—The finish creates a better barrier against rust than zinc plating for use in wet and outdoor environments.

	ID	OD	Thk.	Mil. Spec.	Specs. Met	Pkg. Qty.		Pkg.
Passivated 18-8 Stainless Steel



	5/16"	0.314"	0.583"	0.078"	MS35338-140	ASME B18.21.1	25	91475A030	00000


	3/8"	0.377"	0.680"	0.094"	MS35338-141	ASME B18.21.1	25	91475A031	00000
	7/16"	0.440"	0.776"	0.109"	MS35338-142	ASME B18.21.1	10	91475A116	0000
	1/2"	0.502"	0.869"	0.125"	MS35338-143	ASME B18.21.1	10	91475A033	0000
	9/16"	0.564"	0.965"	0.141"	MS35338-144	ASME B18.21.1	10	91475A159	0000
	5/8"	0.628"	1.073"	0.156"	MS35338-145	ASME B18.21.1	10	91475A035	00000
	3/4"	0.753"	1.265"	0.188"	MS35338-146	ASME B18.21.1	5	91475A040	00000
	1"	1.003"	1.656"	0.250"	MS35338-148	ASME B18.21.1	2	91475A160	0000
	1 1/8"	1.129"	1.847"	0.281"	MS35338-149	ASME B18.21.1	1	91475A186	0000
	1 1/4"	1.254"	2.036"	0.312"	MS35338-150	ASME B18.21.1	1	91475A194	0000


	Black-Oxide 18-8 Stainless Steel



			5/16"	0.314"	0.583"	0.078"	MS35338-140	ASME B18.21.1	50	91475A434	0000


			3/8"	0.377"	0.680"	0.094"	MS35338-141	ASME B18.21.1	10	91475A439	0000
			7/16"	0.440"	0.776"	0.109"	MS35338-142	ASME B18.21.1	10	91475A440	0000
			1/2"	0.502"	0.869"	0.125"	MS35338-143	ASME B18.21.1	10	91475A507	0000
			9/16"	0.564"	0.965"	0.141"	MS35338-144	ASME B18.21.1	2	91475A508	0000
			5/8"	0.628"	1.073"	0.156"	MS35338-145	ASME B18.21.1	2	91475A509	0000


			Highly Corrosion-Resistant Passivated 316 Stainless Steel



					No. 2	0.088"	0.172"	0.020"	MS35338-134	ASME B18.21.1	100	91475A015	0000


					No. 4	0.114"	0.209"	0.025"	MS35338-135	ASME B18.21.1	100	91475A018	0000
					No. 6	0.141"	0.250"	0.031"	MS35338-136	ASME B18.21.1	100	91475A020	0000
					No. 8	0.167"	0.293"	0.040"	MS35338-137	ASME B18.21.1	100	91475A025	0000
					No. 10	0.193"	0.334"	0.047"	MS35338-138	ASME B18.21.1	100	91475A027	0000
					1/4"	0.252"	0.487"	0.062"	MS35338-139	ASME B18.21.1	50	91475A029	00000
					5/16"	0.314"	0.583"	0.078"	MS35338-140	ASME B18.21.1	10	91475A710	0000
					3/8"	0.377"	0.680"	0.094"	MS35338-141	ASME B18.21.1	10	91475A720	0000
					1/2"	0.502"	0.869"	0.125"	MS35338-143	ASME B18.21.1	5	91475A730	0000
					5/8"	0.628"	1.073"	0.156"	MS35338-145	ASME B18.21.1	3	91475A740	0000
					3/4"	0.753"	1.265"	0.188"	MS35338-146	ASME B18.21.1	2	91475A750	0000


					Highly Corrosion-Resistant Black-Oxide 316 Stainless Steel



							No. 2	0.088"	0.172"	0.020"	MS35338-134	ASME B18.21.1	100	91475A377	0000


							No. 4	0.114"	0.209"	0.025"	MS35338-135	ASME B18.21.1	100	91475A380	0000
							No. 6	0.141"	0.250"	0.031"	MS35338-136	ASME B18.21.1	100	91475A384	0000
							No. 8	0.167"	0.293"	0.040"	MS35338-137	ASME B18.21.1	100	91475A387	0000
							No. 10	0.193"	0.334"	0.047"	MS35338-138	ASME B18.21.1	100	91475A391	0000
							1/4"	0.252"	0.487"	0.062"	MS35338-139	ASME B18.21.1	50	91475A395	0000
							3/8"	0.377"	0.680"	0.094"	MS35338-141	ASME B18.21.1	10	91475A760	00000
							1/2"	0.502"	0.869"	0.125"	MS35338-143	ASME B18.21.1	5	91475A770	00000
3/4"							0.753"	1.265"	0.188"	MS35338-146	ASME B18.21.1	2	91475A780	0000


Zinc-Yellow-Chromate-Plated Steel



							No. 2	0.088"	0.172"	0.020"	MS35338-39	ASME B18.21.1	100	91475A235	0000


							No. 4	0.114"	0.209"	0.025"	MS35338-40	ASME B18.21.1	100	91475A242	0000
							No. 6	0.141"	0.250"	0.031"	MS35338-41	ASME B18.21.1	100	91475A257	0000
							No. 8	0.167"	0.293"	0.040"	MS35338-42	ASME B18.21.1	100	91475A273	0000
							No. 10	0.193"	0.334"	0.047"	MS35338-43	ASME B18.21.1	100	91475A274	0000
							1/4"	0.252"	0.487"	0.062"	MS35338-44	ASME B18.21.1	50	91475A283	0000
							5/16"	0.314"	0.583"	0.078"	MS35338-45	ASME B18.21.1	50	91475A289	0000
							3/8"	0.377"	0.680"	0.094"	MS35338-46	ASME B18.21.1	25	91475A293	0000
							7/16"	0.440"	0.776"	0.109"	MS35338-47	ASME B18.21.1	25	91475A304	0000
							1/2"	0.502"	0.869"	0.125"	MS35338-48	ASME B18.21.1	10	91475A328	0000
	9/16"						0.564"	0.965"	0.141"	MS35338-49	ASME B18.21.1	10	91475A331	0000


	5/8"	0.628"					1.073"	0.156"	MS35338-50	ASME B18.21.1	10	91475A342	0000
	3/4"	0.753"					1.265"	0.188"	MS35338-51	ASME B18.21.1	5	91475A790	0000
	7/8"	0.878"					1.459"	0.219"	MS35338-52	ASME B18.21.1	5	91475A346	0000
	1"	1.003"					1.656"	0.250"	MS35338-53	ASME B18.21.1	3	91475A348	0000
	1 1/8"	1.129"					1.847"	0.281"	MS35338-54	ASME B18.21.1	3	91475A353	0000
	1 1/4"	1.254"					2.036"	0.312"	MS35338-55	ASME B18.21.1	2	91475A369	0000
	1 3/8"	1.379"					2.219"	0.344"	MS35338-56	ASME B18.21.1	2	91475A373	0000
	1 1/2"	1.504"					2.419"	0.375"	MS35338-57	ASME B18.21.1	1	91475A376	0000


	Corrosion-Resistant Cadmium-Plated Steel



			No. 2	0.088"			0.172"	0.020"	MS35338-39	ASME B18.21.1	50	91475A511	0000


			No. 4	0.114"			0.209"	0.025"	MS35338-40	ASME B18.21.1	50	91475A517	0000
			No. 6	0.141"			0.250"	0.031"	MS35338-41	ASME B18.21.1	50	91475A523	0000
			No. 8	0.167"			0.293"	0.040"	MS35338-42	ASME B18.21.1	50	91475A530	0000
			No. 10	0.193"			0.334"	0.047"	MS35338-43	ASME B18.21.1	50	91475A531	0000
			1/4"	0.252"			0.487"	0.062"	MS35338-44	ASME B18.21.1	50	91475A535	0000
			5/16"	0.314"			0.583"	0.078"	MS35338-45	ASME B18.21.1	50	91475A541	0000
			3/8"	0.377"			0.680"	0.094"	MS35338-46	ASME B18.21.1	25	91475A544	0000
			7/16"	0.440"			0.776"	0.109"	MS35338-47	ASME B18.21.1	25	91475A548	0000
			1/2"	0.502"			0.869"	0.125"	MS35338-48	ASME B18.21.1	10	91475A552	0000
			9/16"	0.564"			0.965"	0.141"	MS35338-49	ASME B18.21.1	5	91475A553	0000


			5/8"	0.628"			1.073"	0.156"	MS35338-50	ASME B18.21.1	2	91475A820	0000

Heavy-Vibration-Resistant Spring Lock Washers

With a grip that's second only to wedge lock, these washers stop nuts and screws from wiggling loose under constant, vigorous vibration. They are ideal for engines, turbines, generators, and other heavy duty equipment. Similar to a spring, they flatten under pressure to add tension between mating surfaces. As long as the washers aren't deformed or otherwise damaged, you can reuse them indefinitely without losing locking strength. Also known as conical washers and Belleville washers.

Stack multiple washers in the same direction to double or triple how much weight they can bear. Stack washers in opposite directions for better deflection, which means they compress further and withstand more shock and movement without loosening.

Highly Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these washers won't degrade when exposed to harsh weather, salt water, and most chemicals.

High-Strength 17-7 PH Stainless Steel—The strongest stainless steel washers we offer, these are comparable to high-strength Grade 8 steel. They won’t rust in wet and outdoor environments, but they can’t handle the harsh chemicals that 316 stainless steel can.

Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.

Phosphate-Coated Steel—Paint adheres evenly to the surface of these washers, so you can add your own decorative finish. They are more durable than zinc-plated steel washers to withstand wet and outdoor environments. However, they won't hold up to the harsh chemicals that stainless steel can.

Steel—Best for dry environments since moisture will cause these washers to rust.

Acetal—Lightweight, nonconductive, and naturally rust resistant. These washers won't swell or lose their strength if exposed to moisture.

Top Serration—Adds friction for extra gripping power.

DIN 432—These washers have a small tab that presses up against the flats of your nut or screw for extra security.

	For Screw Size	ID	OD	Thk.	Overall Ht.	Serration Location	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel



		1/4"	0.260"	0.683"	0.048" to 0.052"	0.090"	—	—	10	91235A112	00000


		5/16"	0.324"	0.807"	0.060" to 0.064"	0.100"	—	—	10	91235A115	0000
		3/8"	0.389"	0.930"	0.070" to 0.076"	0.112"	—	—	10	91235A120	0000
		1/2"	0.519"	1.179"	0.091" to 0.100"	0.152"	—	—	5	91235A126	0000
		5/8"	0.644"	1.500"	0.130" to 0.140"	0.177"	—	—	1	91235A216	0000
		3/4"	0.773"	1.750"	0.130" to 0.140"	0.195"	—	—	1	91235A217	0000
		M2	2.2 mm	5.0 mm	0.4 mm	0.6 mm	—	DIN 6796	50	91477A122	0000
		M2.5	2.7 mm	6.0 mm	0.5 mm	0.7 mm	—	DIN 6796	10	91477A310	0000
		M3	3.2 mm	7.0 mm	0.6 mm	0.9 mm	—	DIN 6796	100	91477A121	0000
		M4	4.3 mm	9.0 mm	1.0 mm	1.3 mm	—	DIN 6796	25	91477A141	0000
		M5	5.3 mm	11.0 mm	1.2 mm	1.6 mm	—	DIN 6796	25	91477A123	0000


		M6	6.2 mm	14.3 mm	1.0 mm	1.8 mm	—	—	10	91235A415	00000
		M6	6.4 mm	14.0 mm	1.5 mm	2.0 mm	—	DIN 6796	25	91477A161	0000
		M8	8.4 mm	18.0 mm	2.0 mm	2.6 mm	—	DIN 6796	10	91477A181	0000
		M10	10.2 mm	20.7 mm	1.5 mm	2.3 mm	—	—	10	91235A411	00000
		M10	10.5 mm	23.0 mm	2.5 mm	3.2 mm	—	DIN 6796	10	91477A190	0000
		M12	13.0 mm	29.0 mm	3.0 mm	4.0 mm	—	DIN 6796	10	91477A200	0000
		M14	15.0 mm	35.0 mm	3.5 mm	4.7 mm	—	DIN 6796	1	91477A124	0000
		M16	17.0 mm	39.0 mm	4.0 mm	5.3 mm	—	DIN 6796	1	91477A125	0000
		M18	19.0 mm	42.0 mm	4.5 mm	5.8 mm	—	DIN 6796	1	91477A191	00000
		M20	21.0 mm	45.0 mm	5.0 mm	6.4 mm	—	DIN 6796	1	91477A192	00000


		Black-Oxide 18-8 Stainless Steel



				M3	3.2 mm	8.0 mm	0.5 mm	0.7 mm	—	—	10	91235A611	0000


				M4	4.2 mm	10.0 mm	0.5 mm	0.8 mm	—	—	10	91235A612	0000
				M5	5.2 mm	10.0 mm	0.5 mm	0.8 mm	—	—	10	91235A613	0000
				M6	6.2 mm	12.0 mm	0.5 mm	0.9 mm	—	—	10	91235A614	0000
				M6	6.4 mm	14.0 mm	1.5 mm	2.0 mm	—	DIN 6796	5	92471A110	0000
				M7	7.2 mm	14.0 mm	0.5 mm	0.9 mm	—	—	5	91235A615	0000
				M8	8.2 mm	16.0 mm	0.6 mm	1.1 mm	—	—	5	91235A616	0000
				M8	8.4 mm	18.0 mm	2.0 mm	2.6 mm	—	DIN 6796	5	92471A120	0000
				M10	10.5 mm	23.0 mm	2.5 mm	3.2 mm	—	DIN 6796	5	92471A130	00000
				M12	13.0 mm	29.0 mm	3.0 mm	4.0 mm	—	DIN 6796	5	92471A140	00000
				M16	17.0 mm	39.0 mm	4.0 mm	5.3 mm	—	DIN 6796	1	92471A150	00000


				Highly Corrosion-Resistant 316 Stainless Steel



						M2	2.2 mm	5.0 mm	0.4 mm	0.6 mm	—	DIN 6796	25	93237A101	00000


						M3	3.2 mm	7.0 mm	0.6 mm	0.9 mm	—	DIN 6796	25	93237A102	00000
						M4	4.3 mm	9.0 mm	1.0 mm	1.3 mm	—	DIN 6796	10	93237A103	0000
						M4	4.3 mm	14.0 mm	0.4 mm	2.0 mm	—	DIN 432	50	97471A120	00000
						M5	5.3 mm	11.0 mm	1.2 mm	1.6 mm	—	DIN 6796	10	93237A104	00000
						M5	5.3 mm	17.0 mm	0.8 mm	2.5 mm	—	DIN 432	25	97471A121	0000
						M6	6.4 mm	14.0 mm	1.5 mm	2.0 mm	—	DIN 6796	10	93237A105	00000
						M6	6.4 mm	19.0 mm	0.8 mm	3.0 mm	—	DIN 432	25	97471A122	00000
						M8	8.4 mm	18.0 mm	2.0 mm	2.6 mm	—	DIN 6796	5	93237A106	00000
M8						8.4 mm	22.0 mm	1.0 mm	4.0 mm	—	DIN 432	10	97471A123	0000
M10	10.5 mm					23.0 mm	2.5 mm	3.2 mm	—	DIN 6796	1	93237A107	0000


M10	10.5 mm					26.0 mm	1.0 mm	4.0 mm	—	DIN 432	10	97471A124	00000
M12	13.0 mm					29.0 mm	3.0 mm	4.0 mm	—	DIN 6796	1	93237A108	0000
M12	13.0 mm					30.0 mm	1.2 mm	4.5 mm	—	DIN 432	10	97471A125	00000
M14	15.0 mm					33.0 mm	1.2 mm	4.5 mm	—	DIN 432	5	97471A126	00000
M14	15.0 mm					35.0 mm	3.5 mm	4.7 mm	—	DIN 6796	1	93237A109	00000
M16	17.0 mm					36.0 mm	1.2 mm	4.5 mm	—	DIN 432	5	97471A127	00000
M16	17.0 mm					39.0 mm	4.0 mm	5.3 mm	—	DIN 6796	1	93237A112	00000
M20	21.0 mm					42.0 mm	1.6 mm	4.5 mm	—	DIN 432	1	97471A129	0000
M20	21.0 mm					45.0 mm	5.0 mm	6.4 mm	—	DIN 6796	1	93237A115	00000
M22	23.0 mm					50.0 mm	1.6 mm	6.5 mm	—	DIN 432	1	97471A130	0000


M24	25.0 mm					50.0 mm	1.6 mm	6.5 mm	—	DIN 432	1	97471A131	0000
M27	28.0 mm					58.0 mm	1.6 mm	9.5 mm	—	DIN 432	1	97471A132	0000
M30	31.0 mm					63.0 mm	1.6 mm	9.5 mm	—	DIN 432	1	97471A133	0000


High-Strength 17-7 PH Stainless Steel



						No. 6	0.143"	0.341"	0.023" to 0.027"	0.042"	—	—	50	91235A102	00000


						No. 8	0.169"	0.403"	0.029" to 0.033"	0.050"	—	—	50	91235A105	00000
						No. 10	0.197"	0.465"	0.033" to 0.037"	0.057"	—	—	25	91235A109	00000
						1/4"	0.252"	0.551"	0.048" to 0.052"	0.067"	—	—	25	91235A211	0000
						5/16"	0.331"	0.709"	0.074" to 0.082"	0.102"	—	—	10	91235A212	0000
		3/8"				0.413"	0.906"	0.074" to 0.082"	0.106"	—	—	10	91235A213	0000
		1/2"	0.512"			1.142"	0.093" to 0.103"	0.130"	—	—	5	91235A214	00000
		5/8"	0.669"			1.535"	0.131" to 0.145"	0.185"	—	—	1	91235A215	0000
		M3	3.2 mm			7.0 mm	0.6 mm	0.9 mm	—	—	10	91235A313	00000
		M4	4.2 mm			8.0 mm	0.4 mm	0.8 mm	—	—	25	91235A314	00000
		M4	4.2 mm			9.0 mm	0.9 mm	1.3 mm	—	—	10	91235A315	00000


		M4	4.3 mm			9.0 mm	1.0 mm	1.3 mm	—	DIN 6796	5	92471A160	00000
		M5	5.2 mm			11.9 mm	0.8 mm	1.4 mm	—	—	5	91235A317	0000
		M5	5.3 mm			11.0 mm	1.0 mm	1.4 mm	—	—	10	91235A421	00000
		M5	5.3 mm			11.0 mm	1.2 mm	1.6 mm	—	DIN 6796	5	92471A170	00000
		M6	6.2 mm			13.9 mm	1.0 mm	1.8 mm	—	—	10	91235A318	00000
		M12	12.3 mm			23.8 mm	1.8 mm	2.7 mm	—	—	1	91235A311	0000
		M16	16.1 mm			38.7 mm	3.8 mm	5.7 mm	—	—	1	91235A312	0000


		Zinc-Plated Steel



				No. 6	0.142"	0.362"	0.025" to 0.031"	0.047"	Top	—	50	90127A111	0000


				No. 8	0.161"	0.402"	0.036" to 0.042"	0.059"	Top	—	10	90127A112	0000
				No. 10	0.201"	0.481"	0.047" to 0.053"	0.073"	Top	—	10	90127A113	0000
				1/4"	0.254"	0.559"	0.049" to 0.055"	0.087"	Top	—	50	90127A114	0000
				5/16"	0.323"	0.717"	0.052" to 0.058"	0.095"	Top	—	25	90127A115	0000
				3/8"	0.402"	0.877"	0.059" to 0.065"	0.108"	Top	—	25	90127A116	00000
				7/16"	0.489"	1.074"	0.075" to 0.082"	0.120"	Top	—	10	90127A117	0000
				5/8"	0.646"	1.273"	0.095" to 0.101"	0.156"	Top	—	5	90127A118	00000
				3/4"	0.773"	1.750"	0.127" to 0.141"	0.171"	—	—	5	90127A119	00000
				7/8"	0.901"	2.000"	0.146" to 0.162"	0.196"	—	—	1	90127A121	00000
				1"	1.030"	2.250"	0.163" to 0.181"	0.219"	—	—	1	90127A122	0000


				1 1/8"	1.155"	2.500"	0.182" to 0.202"	0.243"	—	—	1	90127A123	00000
				1 1/4"	1.280"	2.750"	0.200" to 0.222"	0.267"	—	—	1	90127A124	00000
				1 1/2"	1.530"	3.250"	0.238" to 0.263"	0.315"	—	—	1	90127A126	00000
				M2	2.2 mm	5.0 mm	0.4 mm	0.6 mm	—	DIN 6796	100	95221A101	00000
				M3	3.2 mm	7.0 mm	0.6 mm	0.9 mm	—	DIN 6796	100	95221A103	00000
				M4	4.3 mm	9.0 mm	1.0 mm	1.3 mm	—	DIN 6796	100	95221A105	00000
				M5	5.3 mm	11.0 mm	1.2 mm	1.6 mm	—	DIN 6796	50	95221A107	00000
				M6	6.2 mm	14.3 mm	1.1 mm	1.7 mm	—	—	25	90127A127	00000
				M6	6.4 mm	14.0 mm	1.5 mm	2.0 mm	—	DIN 6796	25	95221A109	0000
				M8	8.4 mm	18.0 mm	2.0 mm	2.4 mm	—	—	10	90127A128	0000


				M8	8.4 mm	18.0 mm	2.0 mm	2.6 mm	—	DIN 6796	25	95221A111	0000
				M10	10.3 mm	20.5 mm	1.5 mm	2.6 mm	—	—	10	90127A129	00000
				M10	10.3 mm	26.9 mm	2.0 mm	3.7 mm	—	—	10	90127A131	00000
				M10	10.5 mm	23.0 mm	2.5 mm	3.2 mm	—	DIN 6796	10	95221A113	00000
				M12	13.0 mm	29.0 mm	3.0 mm	4.0 mm	—	DIN 6796	5	95221A115	00000
				M14	15.0 mm	35.0 mm	3.4 mm	4.3 mm	—	DIN 6796	1	95221A125	0000
M16				17.0 mm	39.0 mm	4.0 mm	5.3 mm	—	DIN 6796	5	95221A226	00000
M18	19.0 mm			42.0 mm	4.5 mm	5.8 mm	—	DIN 6796	1	95221A130	00000
M20	20.5 mm			44.5 mm	3.3 mm	4.3 mm	—	—	1	90127A132	0000
M20	21.0 mm			45.0 mm	5.0 mm	6.4 mm	—	DIN 6796	1	95221A131	00000


M24	25.0 mm			56.0 mm	6.0 mm	7.8 mm	—	DIN 6796	1	95221A133	00000


Phosphate-Coated Steel



				M2	2.2 mm	5.0 mm	0.4 mm	0.6 mm	—	DIN 6796	100	95221A200	00000


				M3	3.2 mm	7.0 mm	0.6 mm	0.9 mm	—	DIN 6796	100	95221A201	00000
				M4	4.3 mm	9.0 mm	1.0 mm	1.3 mm	—	DIN 6796	100	95221A202	00000
				M5	5.3 mm	11.0 mm	1.2 mm	1.6 mm	—	DIN 6796	100	95221A203	00000
				M6	6.4 mm	14.0 mm	1.5 mm	2.0 mm	—	DIN 6796	50	95221A204	00000
				M8	8.4 mm	18.0 mm	2.0 mm	2.6 mm	—	DIN 6796	50	95221A205	00000
				M10	10.5 mm	23.0 mm	2.5 mm	3.2 mm	—	DIN 6796	10	95221A206	00000
				M12	13.0 mm	29.0 mm	3.0 mm	4.0 mm	—	DIN 6796	10	95221A207	00000
				M14	15.0 mm	35.0 mm	3.5 mm	4.7 mm	—	DIN 6796	3	95221A208	00000
				M16	17.0 mm	39.0 mm	4.0 mm	5.3 mm	—	DIN 6796	3	95221A209	00000
				M18	19.0 mm	42.0 mm	4.5 mm	5.8 mm	—	DIN 6796	2	95221A210	00000


				M20	21.0 mm	45.0 mm	5.0 mm	6.4 mm	—	DIN 6796	1	95221A211	00000
		M24		25.0 mm	56.0 mm	6.0 mm	7.8 mm	—	DIN 6796	1	95221A213	00000


		Steel



				No. 6	0.142"	0.362"	0.025" to 0.031"	0.047"	Top	—	100	90127A007	00000


				No. 8	0.161"	0.402"	0.036" to 0.042"	0.059"	Top	—	100	90127A009	00000
				No. 10	0.201"	0.481"	0.047" to 0.053"	0.073"	Top	—	50	90127A011	00000
				1/4"	0.254"	0.559"	0.049" to 0.055"	0.087"	Top	—	50	90127A029	00000
				5/16"	0.323"	0.717"	0.052" to 0.058"	0.095"	Top	—	50	90127A030	00000
				3/8"	0.402"	0.877"	0.059" to 0.065"	0.108"	Top	—	25	90127A031	00000
				7/16"	0.489"	1.074"	0.075" to 0.081"	0.120"	Top	—	10	90127A032	0000
				1/2"	0.512"	1.074"	0.075" to 0.081"	0.120"	Top	—	10	90127A033	0000
				5/8"	0.646"	1.273"	0.095" to 0.101"	0.156"	Top	—	5	90127A035	00000
				M2	2.2 mm	5.0 mm	0.4 mm	0.6 mm	—	DIN 6796	100	93497A100	0000
				M3	3.2 mm	7.0 mm	0.6 mm	0.9 mm	—	DIN 6796	100	93497A120	0000


				M4	4.3 mm	9.0 mm	1.0 mm	1.3 mm	—	DIN 6796	100	93497A140	00000
				M4	4.3 mm	14.0 mm	0.4 mm	2.0 mm	—	DIN 432	10	97471A101	00000
				M5	5.3 mm	11.0 mm	1.2 mm	1.6 mm	—	DIN 6796	100	93497A150	00000
				M5	5.3 mm	17.0 mm	0.8 mm	2.5 mm	—	DIN 432	10	97471A102	00000
				M6	6.4 mm	14.0 mm	1.5 mm	2.0 mm	—	DIN 6796	50	93497A161	00000
				M6	6.4 mm	19.0 mm	0.8 mm	3.0 mm	—	DIN 432	5	97471A103	0000
				M8	8.4 mm	18.0 mm	2.0 mm	2.6 mm	—	DIN 6796	25	93497A181	00000
				M8	8.4 mm	22.0 mm	1.0 mm	4.0 mm	—	DIN 432	5	97471A104	0000
				M10	10.5 mm	23.0 mm	2.5 mm	3.2 mm	—	DIN 6796	10	93497A191	0000
				M10	10.5 mm	26.0 mm	1.0 mm	4.0 mm	—	DIN 432	5	97471A105	0000


				M12	13.0 mm	29.0 mm	3.0 mm	4.0 mm	—	DIN 6796	10	93497A200	00000
				M12	13.0 mm	30.0 mm	1.2 mm	4.5 mm	—	DIN 432	5	97471A106	00000
				M14	15.0 mm	33.0 mm	1.2 mm	4.5 mm	—	DIN 432	1	97471A107	0000
				M14	15.0 mm	35.0 mm	3.5 mm	4.3 mm	—	DIN 6796	10	93497A325	00000
				M16	17.0 mm	36.0 mm	1.2 mm	4.5 mm	—	DIN 432	1	97471A108	0000
				M16	17.0 mm	39.0 mm	4.0 mm	5.3 mm	—	DIN 6796	5	93497A235	00000
				M18	19.0 mm	42.0 mm	4.5 mm	5.8 mm	—	DIN 6796	1	93497A310	0000
				M20	21.0 mm	42.0 mm	1.6 mm	4.5 mm	—	DIN 432	1	97471A110	0000
				M20	21.0 mm	45.0 mm	5.0 mm	6.4 mm	—	DIN 6796	1	93497A320	0000
				M24	25.0 mm	50.0 mm	1.6 mm	6.5 mm	—	DIN 432	1	97471A112	0000


M24	25.0 mm			56.0 mm	6.0 mm	7.8 mm	—	DIN 6796	1	93497A340	0000
M30	31.0 mm			63.0 mm	1.6 mm	9.5 mm	—	DIN 432	1	97471A114	0000


Acetal



				No. 6, M3.5	0.152"	0.316"	0.022" to 0.032"	0.045"	—	—	100	3573A11	00000


				No. 8, M4	0.173"	0.297"	0.023" to 0.033"	0.046"	—	—	100	3573A12	00000
				No. 10, M5	0.204"	0.365"	0.025" to 0.035"	0.053"	—	—	100	3573A13	00000
				No. 10, M5	0.235"	0.416"	0.030" to 0.040"	0.062"	—	—	100	3573A14	00000
				1/4", M6	0.264"	0.564"	0.033" to 0.043"	0.066"	—	—	100	3573A15	00000
				1/4", M6	0.276"	0.448"	0.030" to 0.040"	0.062"	—	—	100	3573A21	00000
				5/16", M8	0.328"	0.660"	0.043" to 0.053"	0.080"	—	—	100	3573A16	00000
				3/8", M10	0.451"	0.848"	0.034" to 0.044"	0.080"	—	—	25	3573A22	00000
				3/8", M10	0.451"	0.848"	0.050" to 0.060"	0.095"	—	—	25	3573A17	0000

Heavy-Vibration-Resistant Spring Lock Washers for Socket Head Screws

Stop socket head screws from wiggling loose on equipment with constant, vigorous vibration, such as engines, turbines, and generators. These washers have a small diameter to fit under screws with narrow heads. Similar to a spring, they flatten under pressure to add tension between mating surfaces. As long as the washers aren't deformed or otherwise damaged, you can reuse them indefinitely without losing locking strength. Also known as conical washers and Belleville washers.

Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.

Steel—Best for dry environments since moisture will cause these washers to rust.

Top-and-Bottom Serration—Adds friction for extra gripping power.

	For Screw Size	ID	OD	Thk.	Overall Ht.	Serration Location	Pkg. Qty.		Pkg.
18-8 Stainless Steel



		No. 5, M3	0.126"	0.217"	0.020"	0.037"	Top and Bottom	50	90895A005	000000


		No. 6, M3.5	0.146"	0.236"	0.028"	0.045"	Top and Bottom	50	90895A007	00000
		No. 8, M4	0.169"	0.276"	0.028"	0.047"	Top and Bottom	50	90895A009	00000
		No. 10, M5	0.209"	0.354"	0.028"	0.047"	Top and Bottom	25	90895A027	00000
		1/4", M6	0.264"	0.374"	0.028"	0.047"	Top and Bottom	10	90895A029	0000
		5/16", M8	0.331"	0.512"	0.039"	0.063"	Top and Bottom	10	90895A030	0000
		3/8", M10	0.413"	0.630"	0.039"	0.063"	Top and Bottom	5	90895A031	0000
		7/16", M11	0.457"	0.626"	0.051"	0.073"	Top and Bottom	5	90895A111	0000
		1/2", M12	0.539"	0.748"	0.051"	0.073"	Top and Bottom	5	90895A033	00000
		9/16", M14	0.591"	0.866"	0.059"	0.091"	Top and Bottom	1	90895A037	0000
		5/8", M16	0.669"	0.945"	0.059"	0.091"	Top and Bottom	1	90895A035	0000


		3/4", M19	0.787"	1.181"	0.071"	0.102"	Top and Bottom	1	90895A036	0000
		7/8", M22	0.906"	1.299"	0.071"	0.118"	Top and Bottom	1	90895A113	0000
		1", M25	1.063"	1.496"	0.098"	0.142"	Top and Bottom	1	90895A114	00000
		1 1/8", M30	1.244"	1.772"	0.098"	0.161"	Top and Bottom	1	90895A115	00000
		1 3/8", M36	1.496"	2.126"	0.118"	0.185"	Top and Bottom	1	90895A116	00000
		M1.6	0.067"	0.126"	0.020"	0.030"	Top and Bottom	50	90895A222	00000
		M2	0.087"	0.157"	0.014"	0.024"	Top and Bottom	50	90895A001	00000
		M2.5	0.106"	0.189"	0.018"	0.035"	Top and Bottom	50	90895A003	00000
		M3	0.126"	0.217"	0.018"	0.035"	Top and Bottom	50	90488A110	00000
		M4	0.169"	0.278"	0.020"	0.039"	Top and Bottom	50	90488A120	00000


		M6	0.252"	0.394"	0.024"	0.047"	Top and Bottom	10	90488A130	0000
		M7	0.291"	0.472"	0.028"	0.051"	Top and Bottom	5	90895A223	00000
		M8	0.331"	0.512"	0.028"	0.055"	Top and Bottom	10	90488A140	00000
		M10	0.413"	0.630"	0.035"	0.063"	Top and Bottom	5	90488A150	00000
		M18	0.748"	1.063"	0.059"	0.091"	Top and Bottom	1	90895A021	0000
		M20	0.827"	1.181"	0.059"	0.098"	Top and Bottom	1	90895A112	0000


		Zinc-Plated Steel



				No. 4	0.126"	0.217"	0.020"	0.037"	Top and Bottom	100	90895A121	00000


				No. 5, M3	0.126"	0.217"	0.018"	0.035"	Top and Bottom	100	90895A202	0000
				No. 6, M3.5	0.146"	0.236"	0.020"	0.035"	Top and Bottom	100	90895A203	00000
				No. 8, M4	0.169"	0.276"	0.020"	0.039"	Top and Bottom	100	90895A204	00000
				No. 10, M5	0.209"	0.354"	0.024"	0.043"	Top and Bottom	100	90895A205	00000
				No. 12	0.252"	0.394"	0.028"	0.047"	Top and Bottom	50	90895A122	00000
				1/4", M6	0.264"	0.374"	0.024"	0.047"	Top and Bottom	50	90895A207	00000
				5/16", M8	0.331"	0.512"	0.028"	0.055"	Top and Bottom	50	90895A208	00000
				3/8", M10	0.413"	0.630"	0.035"	0.063"	Top and Bottom	25	90895A209	0000
				7/16", M11	0.457"	0.626"	0.035"	0.063"	Top and Bottom	25	90895A210	0000
				1/2", M12	0.539"	0.748"	0.039"	0.071"	Top and Bottom	25	90895A212	0000


				9/16", M14	0.591"	0.866"	0.043"	0.079"	Top and Bottom	25	90895A213	00000
				5/8", M16	0.669"	0.945"	0.047"	0.083"	Top and Bottom	25	90895A214	00000
				3/4", M19	0.787"	1.181"	0.055"	0.098"	Top and Bottom	10	90895A216	00000
				7/8", M22	0.906"	1.299"	0.055"	0.106"	Top and Bottom	5	90895A218	00000
				1", M25	1.063"	1.496"	0.071"	0.122"	Top and Bottom	5	90895A219	00000
				1 1/16", M27	1.126"	1.535"	0.071"	0.122"	Top and Bottom	5	90895A224	00000
				1 1/8", M30	1.244"	1.772"	0.071"	0.142"	Top and Bottom	5	90895A220	00000
1 3/8", M36				1.496"	2.126"	0.098"	0.165"	Top and Bottom	1	90895A221	0000
M1.6	0.067"			0.126"	0.014"	0.024"	Top and Bottom	100	90895A311	0000
M2	0.087"			0.157"	0.014"	0.024"	Top and Bottom	100	90895A200	0000


M2.5	0.106"			0.189"	0.018"	0.035"	Top and Bottom	100	90895A201	0000
M18	0.748"			1.063"	0.055"	0.091"	Top and Bottom	10	90895A215	00000
M20	0.827"			1.181"	0.055"	0.098"	Top and Bottom	5	90895A217	00000
M24	1.008"			1.417"	0.063"	0.114"	Top and Bottom	5	90895A312	00000


Steel



				No. 5, M3	0.126"	0.217"	0.018"	0.035"	Top and Bottom	100	93501A005	0000


				No. 6, M3.5	0.146"	0.236"	0.018"	0.035"	Top and Bottom	100	93501A007	0000
				No. 8, M4	0.169"	0.276"	0.020"	0.039"	Top and Bottom	100	93501A009	0000
				No. 10, M5	0.209"	0.354"	0.024"	0.043"	Top and Bottom	100	93501A027	00000
				1/4", M6	0.264"	0.374"	0.028"	0.047"	Top and Bottom	100	93501A029	00000
				5/16", M8	0.331"	0.512"	0.031"	0.055"	Top and Bottom	100	93501A030	00000
				3/8", M10	0.413"	0.630"	0.039"	0.063"	Top and Bottom	100	93501A031	00000
				7/16", M11	0.457"	0.626"	0.039"	0.063"	Top and Bottom	100	93501A032	00000
				1/2", M12	0.539"	0.748"	0.043"	0.071"	Top and Bottom	50	93501A033	00000
				9/16", M14	0.591"	0.866"	0.047"	0.079"	Top and Bottom	50	93501A034	00000
				5/8", M16	0.669"	0.945"	0.051"	0.083"	Top and Bottom	50	93501A035	00000


				3/4", M19	0.787"	1.181"	0.059"	0.098"	Top and Bottom	25	93501A036	00000
				7/8", M22	0.906"	1.299"	0.059"	0.106"	Top and Bottom	20	93501A037	00000
				1", M25	1.063"	1.496"	0.079"	0.122"	Top and Bottom	10	93501A038	00000
				1 1/8", M30	1.244"	1.772"	0.079"	0.142"	Top and Bottom	5	93501A023	00000
				1 3/8", M36	1.496"	2.126"	0.098"	0.165"	Top and Bottom	5	93501A040	00000
				M1.6	0.067"	0.126"	0.014"	0.024"	Top and Bottom	100	93501A111	0000
				M2	0.087"	0.157"	0.014"	0.024"	Top and Bottom	100	93501A001	0000
				M2.5	0.106"	0.189"	0.018"	0.035"	Top and Bottom	100	93501A003	0000
				M6	0.252"	0.394"	0.024"	0.047"	Top and Bottom	100	93501A112	00000
				M12	0.512"	0.709"	0.039"	0.067"	Top and Bottom	50	93501A113	00000


		M18	0.748"	1.063"	0.059"	0.091"	Top and Bottom	10	93501A021	00000
		M20	0.827"	1.181"	0.059"	0.098"	Top and Bottom	10	93501A022	00000
		M24	1.008"	1.417"	0.063"	0.114"	Top and Bottom	5	93501A114	00000
		M27	1.126"	1.535"	0.071"	0.122"	Top and Bottom	5	93501A115	00000

Mil. Spec. Tooth Lock Washers

These washers are manufactured and tested to strict U.S. military standards for material and construction. They resist vibration better than split lock washers to prevent nuts and screws from loosening in applications with constant movement, such as conveyors. Tooth lock washers typically can't be reused because the teeth often get bent when tightened.

External Tooth

Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.

	ID	OD	Thk.	Mil. Spec.	Specs. Met	Pkg. Qty.		Pkg.
Wear-Resistant 410 Stainless Steel



	No. 4	0.115"	0.260"	0.015" to 0.019"	MS35335-57	ASME B18.21.1	25	97775A110	000000


	No. 6	0.141"	0.320"	0.016" to 0.022"	MS35335-58	ASME B18.21.1	25	97775A150	00000
	No. 8	0.168"	0.381"	0.018" to 0.023"	MS35335-59	ASME B18.21.1	25	97775A220	00000
	No. 10	0.195"	0.410"	0.020" to 0.025"	MS35335-60	ASME B18.21.1	25	97775A260	00000
	1/4"	0.256"	0.510"	0.023" to 0.028"	MS35335-61	ASME B18.21.1	25	97775A330	00000
	5/16"	0.320"	0.610"	0.028" to 0.034"	MS35335-62	ASME B18.21.1	25	97775A370	00000
	3/8"	0.384"	0.694"	0.032" to 0.040"	MS35335-63	ASME B18.21.1	25	97775A440	00000
	7/16"	0.448"	0.760"	0.032" to 0.040"	MS35335-64	ASME B18.21.1	25	97775A511	00000
	1/2"	0.513"	0.900"	0.037" to 0.045"	MS35335-65	ASME B18.21.1	10	97775A512	0000
	9/16"	0.576"	0.985"	0.037" to 0.045"	MS35335-66	ASME B18.21.1	10	97775A513	0000
	5/8"	0.641"	1.070"	0.042" to 0.050"	MS35335-67	ASME B18.21.1	5	97775A514	0000


	3/4"	0.768"	1.260"	0.047" to 0.055"	MS35335-68	ASME B18.21.1	5	97775A515	0000
	7/8"	0.897"	1.410"	0.052" to 0.060"	MS35335-69	ASME B18.21.1	1	97775A516	0000
	1"	1.025"	1.620"	0.059" to 0.067"	MS35335-70	ASME B18.21.1	1	97775A517	0000


	Zinc-Plated Steel



			No. 4	0.115"	0.260"	0.015" to 0.019"	MS35335-29	ASME B18.21.1	100	97775A518	0000


			No. 6	0.141"	0.320"	0.016" to 0.022"	MS35335-30	ASME B18.21.1	100	97775A519	00000
			No. 8	0.168"	0.381"	0.018" to 0.023"	MS35335-31	ASME B18.21.1	100	97775A520	00000
			No. 10	0.195"	0.410"	0.020" to 0.025"	MS35335-32	ASME B18.21.1	100	97775A521	00000
			1/4"	0.256"	0.510"	0.023" to 0.028"	MS35335-33	ASME B18.21.1	100	97775A522	00000
			5/16"	0.320"	0.610"	0.028" to 0.034"	MS35335-34	ASME B18.21.1	50	97775A523	00000
			3/8"	0.384"	0.694"	0.032" to 0.040"	MS35335-35	ASME B18.21.1	50	97775A524	00000
			7/16"	0.448"	0.760"	0.032" to 0.040"	MS35335-36	ASME B18.21.1	25	97775A525	00000
			1/2"	0.513"	0.900"	0.037" to 0.045"	MS35335-37	ASME B18.21.1	25	97775A526	00000
			9/16"	0.576"	0.985"	0.037" to 0.045"	MS35335-38	ASME B18.21.1	25	97775A527	00000
			5/8"	0.641"	1.070"	0.042" to 0.050"	MS35335-39	ASME B18.21.1	10	97775A528	0000


			3/4"	0.768"	1.260"	0.047" to 0.055"	MS35335-40	ASME B18.21.1	10	97775A529	0000
			7/8"	0.897"	1.410"	0.052" to 0.060"	MS35335-41	ASME B18.21.1	10	97775A530	0000
			1"	1.025"	1.620"	0.059" to 0.067"	MS35335-42	ASME B18.21.1	5	97775A531	0000


			Highly Corrosion-Resistant Phosphor Bronze



					No. 10	0.195"	0.410"	0.020" to 0.025"	MS35335-88	ASME B18.21.1	25	97775A534	0000


					1/4"	0.256"	0.510"	0.023" to 0.028"	MS35335-89	ASME B18.21.1	10	97775A535	0000
					5/16"	0.320"	0.610"	0.028" to 0.034"	MS35335-90	ASME B18.21.1	10	97775A536	0000
					3/8"	0.384"	0.694"	0.032" to 0.040"	MS35335-91	ASME B18.21.1	10	97775A537	0000
					1/2"	0.513"	0.900"	0.037" to 0.045"	MS35335-93	ASME B18.21.1	10	97775A538	0000

Internal Tooth

Corrosion-Resistant Cadmium-Plated Steel—The finish creates a better barrier against rust than zinc plating for use in wet and outdoor environments.

	ID	OD	Thk.	Mil. Spec.	Specs. Met	Pkg. Qty.		Pkg.
Wear-Resistant 410 Stainless Steel



	No. 2	0.089"	0.200"	0.010" to 0.015"	MS35333-69, NASM35333	ASME B18.21.1	25	96551A110	00000


	No. 4	0.115"	0.270"	0.015" to 0.019"	MS35333-70, NASM35333	ASME B18.21.1	25	96551A550	00000
	No. 6	0.141"	0.295"	0.017" to 0.021"	MS35333-71, NASM35333	ASME B18.21.1	25	96551A610	00000
	No. 8	0.168"	0.340"	0.018" to 0.023"	MS35333-72, NASM35333	ASME B18.21.1	25	96551A670	00000
	No. 10	0.195"	0.381"	0.020" to 0.025"	MS35333-73, NASM35333	ASME B18.21.1	25	96551A770	00000
	1/4"	0.256"	0.478"	0.023" to 0.028"	MS35333-74, NASM35333	ASME B18.21.1	25	96551A790	00000
	5/16"	0.332"	0.610"	0.028" to 0.034"	MS35333-75, NASM35333	ASME B18.21.1	25	96551A120	0000
	3/8"	0.384"	0.692"	0.032" to 0.040"	MS35333-76, NASM35333	ASME B18.21.1	25	96551A130	00000
	7/16"	0.448"	0.789"	0.032" to 0.040"	MS35333-77, NASM35333	ASME B18.21.1	25	96551A140	00000
	1/2"	0.512"	0.900"	0.037" to 0.045"	MS35333-78, NASM35333	ASME B18.21.1	10	96551A150	00000
	5/8"	0.640"	1.071"	0.042" to 0.050"	MS35333-80, NASM35333	ASME B18.21.1	10	96551A160	00000


	3/4"	0.769"	1.245"	0.047" to 0.055"	MS35333-81, NASM35333	ASME B18.21.1	5	96551A170	00000
	7/8"	0.894"	1.410"	0.052" to 0.060"	MS35333-82, NASM35333	ASME B18.21.1	5	96551A180	00000


	Corrosion-Resistant Cadmium-Plated Steel



			No. 2	0.089"	0.200"	0.010" to 0.015"	MS35333-35, NASM35333	ASME B18.21.1	25	96551A190	0000


			No. 4	0.115"	0.270"	0.015" to 0.019"	MS35333-36, NASM35333	ASME B18.21.1	25	96551A200	0000
			No. 6	0.141"	0.295"	0.017" to 0.021"	MS35333-37, NASM35333	ASME B18.21.1	25	96551A210	0000
			No. 8	0.168"	0.340"	0.018" to 0.023"	MS35333-38, NASM35333	ASME B18.21.1	25	96551A220	0000
			No. 10	0.195"	0.381"	0.020" to 0.025"	MS35333-39, NASM35333	ASME B18.21.1	25	96551A230	0000
			1/4"	0.256"	0.478"	0.023" to 0.028"	MS35333-40, NASM35333	ASME B18.21.1	25	96551A240	0000
			5/16"	0.332"	0.610"	0.028" to 0.034"	MS35333-41, NASM35333	ASME B18.21.1	25	96551A250	0000
			3/8"	0.384"	0.692"	0.032" to 0.040"	MS35333-42, NASM35333	ASME B18.21.1	25	96551A260	00000
			7/16"	0.448"	0.789"	0.032" to 0.040"	MS35333-43, NASM35333	ASME B18.21.1	25	96551A270	00000
			1/2"	0.512"	0.900"	0.037" to 0.045"	MS35333-44, NASM35333	ASME B18.21.1	25	96551A280	00000
			5/8"	0.640"	1.071"	0.042" to 0.050"	MS35333-46, NASM35333	ASME B18.21.1	10	96551A290	0000


			3/4"	0.769"	1.245"	0.047" to 0.055"	MS35333-47, NASM35333	ASME B18.21.1	10	96551A300	0000
			7/8"	0.894"	1.410"	0.052" to 0.060"	MS35333-48, NASM35333	ASME B18.21.1	10	96551A310	00000
			1"	1.019"	1.637"	0.059" to 0.067"	MS35333-49, NASM35333	ASME B18.21.1	5	96551A320	0000
			1 1/4"	1.260"	1.950"	0.059" to 0.067"	MS35333-51, NASM35333	ASME B18.21.1	5	96551A330	0000


			Highly Corrosion-Resistant Phosphor Bronze



					No. 2	0.089"	0.200"	0.010" to 0.015"	MS35333-103, NASM35333	ASME B18.21.1	25	96551A340	0000


					No. 4	0.115"	0.270"	0.015" to 0.019"	MS35333-104, NASM35333	ASME B18.21.1	25	96551A350	0000
					No. 6	0.141"	0.295"	0.017" to 0.021"	MS35333-105, NASM35333	ASME B18.21.1	25	96551A360	00000
					No. 8	0.168"	0.340"	0.018" to 0.023"	MS35333-106, NASM35333	ASME B18.21.1	25	96551A370	00000
					No. 10	0.195"	0.381"	0.020" to 0.025"	MS35333-107, NASM35333	ASME B18.21.1	25	96551A380	00000
					1/4"	0.256"	0.478"	0.023" to 0.028"	MS35333-108, NASM35333	ASME B18.21.1	25	96551A390	00000
					5/16"	0.332"	0.610"	0.028" to 0.034"	MS35333-109, NASM35333	ASME B18.21.1	10	96551A400	0000
					3/8"	0.384"	0.692"	0.032" to 0.040"	MS35333-110, NASM35333	ASME B18.21.1	10	96551A410	0000
					1/2"	0.512"	0.900"	0.037" to 0.045"	MS35333-113, NASM35333	ASME B18.21.1	5	96551A420	0000

Wave Spring Lock Washers

The wavy shape flexes like a spring to keep nuts and screws secure on slightly uneven surfaces. These washers add a small amount of tension to stop fasteners from backing out due to mild vibration. While they don't hold as well as other lock washers, they do grip slightly better than curved washers. They work best in electrical panels, light fixtures, and other light duty assemblies. Since these washers hold their shape when untightened, you can reuse them a handful of times without losing strength.

Highly Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these washers won't degrade when exposed to harsh weather, salt water, and most chemicals.

Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.

Steel—Best for dry environments since moisture will cause these washers to rust.

3 Wave—More points of contact than single-wave washers for a better grip.

DIN 128B—These washers have split ends that bite into your material surface for a tighter hold than other wave washers.

	For Screw Size	No. of Waves	ID	OD	Thk.	Overall Ht.	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel



		No. 0	1	0.072"	0.170"	0.010"	0.050"	—	10	99842A101	00000


		No. 2	1	0.095"	0.130"	0.004"	0.040"	—	10	99842A103	00000
		No. 2	3	0.097"	0.168"	0.010"	0.040"	—	10	92161A021	0000
		No. 3	3	0.102"	0.195"	0.005"	0.017"	—	10	90881A111	0000
		No. 4	1	0.121"	0.240"	0.008"	0.056"	—	10	99842A105	00000
		No. 4	3	0.127"	0.250"	0.005"	0.025"	—	10	92161A022	0000
		No. 5	1	0.135"	0.245"	0.004"	0.055"	—	10	99842A107	00000
		No. 5	3	0.130"	0.190"	0.005"	0.035"	—	10	92161A023	0000
		No. 6	1	0.148"	0.270"	0.005"	0.062"	—	10	99842A109	00000
		No. 6	3	0.147"	0.243"	0.006"	0.050"	—	10	92161A024	0000
		No. 8	1	0.165"	0.285"	0.006"	0.053"	—	10	99842A111	00000


		No. 8	3	0.195"	0.245"	0.006"	0.055"	—	10	92161A025	0000
		No. 10	1	0.200"	0.300"	0.010"	0.061"	—	10	99842A113	00000
		No. 10	3	0.205"	0.375"	0.005"	0.041"	—	10	92161A026	0000
		No. 12	3	0.245"	0.377"	0.006"	0.030"	—	10	90881A112	0000
		No. 15, No. 16, No. 18, 1/4", 5/16"	3	0.328"	0.682"	0.010"	0.073"	—	10	92161A029	0000
		No. 20, No. 24, 5/16", 3/8"	3	0.391"	0.682"	0.010"	0.080"	—	10	92161A030	0000
		1/4"	1	0.260"	0.485"	0.010"	0.070"	—	10	99842A696	00000
		3/8", 7/16"	3	0.453"	0.850"	0.010"	0.100"	—	10	92161A031	0000
		7/16", 1/2"	3	0.516"	0.860"	0.010"	0.101"	—	10	92161A032	00000
		1/2", 9/16"	3	0.578"	0.995"	0.015"	0.104"	—	10	92161A033	00000


		5/8", 11/16"	3	0.703"	1.120"	0.015"	0.135"	—	10	92161A035	00000
		3/4", 13/16"	3	0.828"	1.432"	0.020"	0.135"	—	5	92161A036	0000
		7/8", 15/16"	3	0.953"	1.557"	0.020"	0.135"	—	5	92161A037	0000
		1"	3	1.000"	1.682"	0.020"	0.135"	—	5	92161A038	00000
		1 1/16"	3	1.073"	1.425"	0.015"	0.090"	—	5	90881A113	00000
		1 1/8"	3	1.155"	1.375"	0.015"	0.105"	—	5	90881A114	00000
		1 1/4"	3	1.265"	1.625"	0.020"	0.125"	—	1	90881A115	0000
		1 1/2"	3	1.560"	2.380"	0.016"	0.100"	—	1	90881A116	0000
		M2	3	2.4 mm	4.2 mm	0.3 mm	0.9 mm	—	10	92161A047	00000
		M2.5	1	2.7 mm	5.0 mm	0.3 mm	1.4 mm	DIN 137B	50	92168A118	00000


		M2.5	3	3.2 mm	6.4 mm	0.1 mm	0.5 mm	—	10	92161A048	00000
		M3	1	3.2 mm	8.0 mm	0.5 mm	1.6 mm	DIN 137B	100	92168A101	0000
		M3	3	3.3 mm	4.7 mm	0.1 mm	0.8 mm	—	10	92161A049	00000
		M3.5	1	3.7 mm	8.0 mm	0.5 mm	1.8 mm	DIN 137B	100	92168A119	00000
		M4	1	4.3 mm	9.0 mm	0.5 mm	2.0 mm	DIN 137B	100	92168A103	0000
		M4	1	4.4 mm	7.6 mm	0.7 mm	1.4 mm	DIN 128B	50	97093A174	0000
		M4	3	4.3 mm	7.1 mm	0.5 mm	1.5 mm	—	10	92161A050	00000
		M5	1	5.3 mm	11.0 mm	0.5 mm	2.2 mm	DIN 137B	100	92168A105	0000
		M5	1	5.4 mm	9.2 mm	0.9 mm	1.7 mm	DIN 128B	25	97093A175	0000
		M5	3	5.2 mm	9.5 mm	0.1 mm	0.8 mm	—	10	92161A051	00000


		M6	1	6.4 mm	12.0 mm	0.5 mm	2.6 mm	DIN 137B	100	92168A107	0000
		M6	1	6.5 mm	11.8 mm	1.2 mm	2.2 mm	DIN 128B	25	97093A176	0000
		M6	3	6.4 mm	11.1 mm	0.1 mm	0.9 mm	—	5	92161A052	0000
		M8	1	8.4 mm	15.0 mm	0.8 mm	3.0 mm	DIN 137B	50	92168A109	0000
		M8	1	8.5 mm	14.8 mm	1.5 mm	2.7 mm	DIN 128B	25	97093A177	0000
		M8	3	8.3 mm	12.6 mm	0.2 mm	1.2 mm	—	5	92161A053	0000
		M10	1	10.5 mm	21.0 mm	1.0 mm	4.2 mm	DIN 137B	25	92168A111	0000
		M10	1	10.7 mm	18.1 mm	1.7 mm	3.1 mm	DIN 128B	25	97093A178	00000
		M10	3	10.3 mm	14.0 mm	0.2 mm	1.5 mm	—	5	92161A054	0000
		M12	1	12.7 mm	21.1 mm	1.9 mm	3.6 mm	DIN 128B	10	97093A179	0000

M12	1	13.0 mm	24.0 mm	1.2 mm	5.0 mm	DIN 137B	10	92168A113	0000
M14	1	15.0 mm	28.0 mm	1.6 mm	6.0 mm	DIN 137B	10	92168A121	00000
M16	1	17.0 mm	27.4 mm	2.6 mm	5.1 mm	DIN 128B	1	97093A182	0000
M16	1	17.0 mm	30.0 mm	1.6 mm	6.4 mm	DIN 137B	10	92168A115	00000
M18	1	19.0 mm	34.0 mm	1.6 mm	6.6 mm	DIN 137B	10	92168A122	00000
M20	1	21.0 mm	36.0 mm	1.6 mm	7.4 mm	DIN 137B	5	92168A117	0000
M24	1	25.0 mm	44.0 mm	1.8 mm	8.2 mm	DIN 137B	5	92168A123	00000

Black-Oxide 18-8 Stainless Steel



		No. 0	1	0.072"	0.170"	0.010"	0.050"	—	10	99842A333	00000


		No. 2	3	0.100"	0.171"	0.010"	0.040"	—	10	92161A041	00000
		No. 4	1	0.121"	0.240"	0.008"	0.056"	—	10	99842A335	00000
		No. 4	3	0.130"	0.255"	0.005"	0.025"	—	10	92161A042	00000
		No. 5	1	0.135"	0.245"	0.004"	0.055"	—	10	99842A336	00000
		No. 6	3	0.150"	0.245"	0.006"	0.050"	—	10	92161A044	00000
		No. 8	1	0.165"	0.285"	0.006"	0.053"	—	10	99842A338	00000
		No. 8	3	0.200"	0.250"	0.006"	0.055"	—	10	92161A045	00000
		No. 10	1	0.200"	0.300"	0.010"	0.061"	—	10	99842A339	00000
		No. 10	3	0.208"	0.385"	0.005"	0.041"	—	10	92161A046	00000
		1/4"	1	0.260"	0.485"	0.010"	0.070"	—	10	99842A344	00000


		Highly Corrosion-Resistant 316 Stainless Steel



				No. 0	1	0.068"	0.170"	0.010"	0.050"	—	10	93423A111	00000


				No. 2	1	0.094"	0.130"	0.004"	0.040"	—	10	93423A112	00000
				No. 2	3	0.100"	0.171"	0.010"	0.040"	—	10	91227A011	00000
				No. 4	1	0.118"	0.240"	0.008"	0.056"	—	10	93423A113	00000
				No. 4	3	0.130"	0.255"	0.005"	0.025"	—	10	91227A012	00000
				No. 5	3	0.133"	0.192"	0.005"	0.035"	—	10	91227A013	00000
				No. 6	1	0.148"	0.270"	0.005"	0.062"	—	10	93423A115	00000
				No. 6	3	0.150"	0.245"	0.006"	0.050"	—	10	91227A014	00000
				No. 8	1	0.165"	0.285"	0.006"	0.053"	—	10	93423A116	00000
				No. 8	3	0.200"	0.250"	0.006"	0.055"	—	10	91227A015	00000
				No. 10	1	0.200"	0.300"	0.010"	0.061"	—	10	93423A117	00000


				No. 10	3	0.208"	0.385"	0.005"	0.041"	—	10	91227A016	00000
				1/4"	1	0.265"	0.490"	0.010"	0.063"	—	5	93423A118	0000


				Zinc-Plated Steel



						M3	1	3.1 mm	6.2 mm	0.6 mm	1.1 mm	DIN 128B	100	97093A155	0000


						M4	1	4.1 mm	7.6 mm	0.7 mm	1.2 mm	DIN 128B	100	97093A156	0000
						M5	1	5.1 mm	9.2 mm	0.9 mm	1.5 mm	DIN 128B	100	97093A157	0000
						M6	1	6.1 mm	11.8 mm	1.2 mm	2.0 mm	DIN 128B	100	97093A158	0000
						M8	1	8.1 mm	14.8 mm	1.5 mm	2.5 mm	DIN 128B	100	97093A159	00000
						M10	1	10.2 mm	18.1 mm	1.7 mm	2.9 mm	DIN 128B	50	97093A161	00000
						M12	1	12.2 mm	21.1 mm	2.0 mm	3.4 mm	DIN 128B	25	97093A162	0000
						M14	1	14.2 mm	24.1 mm	2.4 mm	3.9 mm	DIN 128B	25	97093A163	00000
						M16	1	16.2 mm	27.4 mm	2.7 mm	4.5 mm	DIN 128B	25	97093A164	00000
						M18	1	18.2 mm	29.4 mm	2.7 mm	4.5 mm	DIN 128B	10	97093A165	0000
						M22	1	22.5 mm	35.9 mm	3.0 mm	5.1 mm	DIN 128B	5	97093A167	0000


						M24	1	24.5 mm	40.0 mm	3.8 mm	6.5 mm	DIN 128B	5	97093A168	0000


						Black-Oxide Steel



						M3	1	3.2 mm	8.0 mm	0.5 mm	1.6 mm	DIN 137B	100	90504A111	0000


						M4	1	4.3 mm	9.0 mm	0.5 mm	2.0 mm	DIN 137B	100	90504A112	0000
						M5	1	5.3 mm	11.0 mm	0.5 mm	2.2 mm	DIN 137B	100	90504A113	0000
						M6	1	6.4 mm	12.0 mm	0.5 mm	2.6 mm	DIN 137B	100	90504A114	00000
						M7	1	7.4 mm	14.0 mm	0.8 mm	3.0 mm	DIN 137B	100	90504A115	00000
						M8	1	8.4 mm	15.0 mm	0.8 mm	3.0 mm	DIN 137B	100	90504A116	00000
						M10	1	10.5 mm	21.0 mm	1.0 mm	4.2 mm	DIN 137B	100	90504A117	00000
						M12	1	13.0 mm	24.0 mm	1.2 mm	5.0 mm	DIN 137B	25	90504A118	0000
						M14	1	15.0 mm	28.0 mm	1.6 mm	6.0 mm	DIN 137B	25	90504A119	00000
						M16	1	17.0 mm	30.0 mm	1.6 mm	6.4 mm	DIN 137B	25	90504A121	00000
						M20	1	21.0 mm	36.0 mm	1.6 mm	7.4 mm	DIN 137B	10	90504A122	0000


						M24	1	25.0 mm	44.0 mm	1.8 mm	8.2 mm	DIN 137B	5	90504A123	00000


		Steel



						No. 2	1	0.098"	0.188"	0.005"	0.025"	—	10	96697A100	0000


						No. 2	3	0.095"	0.181"	0.010"	0.035"	—	10	90134A041	00000
						No. 4	1	0.125"	0.290"	0.005"	0.090"	—	10	96697A200	0000
						No. 4	3	0.125"	0.250"	0.005"	0.020"	—	25	90134A043	00000
						No. 5	3	0.145"	0.240"	0.005"	0.040"	—	25	90134A044	00000
						No. 6	1	0.160"	0.438"	0.008"	0.103"	—	10	96697A300	0000
						No. 6, No. 7, No. 8	3	0.159"	0.375"	0.012"	0.055"	—	50	90134A007	00000
						No. 8	1	0.185"	0.300"	0.005"	0.070"	—	10	96697A350	0000
						No. 8	1	0.193"	0.359"	0.012"	0.060"	—	10	96697A400	0000
						No. 10	1	0.203"	0.437"	0.010"	0.080"	—	10	96697A410	0000
						No. 10	3	0.214"	0.250"	0.008"	0.050"	—	100	90134A011	00000


						No. 12	3	0.227"	0.500"	0.010"	0.060"	—	25	90134A045	00000
						1/4"	1	0.269"	0.423"	0.008"	0.070"	—	10	96697A500	00000
						1/4"	3	0.252"	0.375"	0.010"	0.060"	—	50	90134A029	00000
				5/16"		3	0.320"	0.437"	0.006"	0.040"	—	50	90134A030	00000
				3/8"	3	0.393"	0.500"	0.007"	0.070"	—	50	90134A031	00000
				7/16"	3	0.450"	0.750"	0.015"	0.090"	—	50	90134A032	00000
				1/2"	3	0.520"	0.750"	0.015"	0.090"	—	25	90134A033	00000
				9/16"	3	0.625"	0.870"	0.010"	0.060"	—	25	90134A046	00000
				5/8"	3	0.655"	0.855"	0.010"	0.070"	—	50	90134A035	00000
				3/4"	3	0.752"	1.062"	0.015"	0.115"	—	25	90134A036	00000


				7/8"	3	0.961"	1.230"	0.020"	0.100"	—	10	90134A047	00000
				1"	3	1.055"	1.351"	0.015"	0.115"	—	25	90134A038	00000
				1 1/16"	3	1.068"	1.500"	0.018"	0.094"	—	10	90134A048	00000
				1 1/8"	3	1.155"	1.375"	0.015"	0.105"	—	10	90134A049	00000
				1 1/4"	3	1.360"	1.675"	0.020"	0.145"	—	5	90134A050	00000
				1 3/8"	3	1.406"	1.812"	0.020"	0.130"	—	5	90134A051	00000
				1 1/2"	3	1.550"	2.000"	0.022"	0.140"	—	5	90134A052	00000
				1 3/4"	3	1.840"	2.375"	0.025"	0.168"	—	5	90134A053	00000


				Highly Corrosion-Resistant Phosphor Bronze



	M3				1	3.2 mm	8.0 mm	0.5 mm	1.6 mm	DIN 137B	25	90394A111	00000


	M4				1	4.3 mm	9.0 mm	0.5 mm	2.0 mm	DIN 137B	25	90394A112	00000
	M5				1	5.3 mm	11.0 mm	0.5 mm	2.2 mm	DIN 137B	10	90394A113	0000
	M6				1	6.4 mm	12.0 mm	0.5 mm	2.6 mm	DIN 137B	10	90394A114	0000
	M8				1	8.4 mm	15.0 mm	0.8 mm	3.0 mm	DIN 137B	5	90394A115	0000
	M10				1	10.5 mm	21.0 mm	1.0 mm	4.2 mm	DIN 137B	1	90394A116	0000
	M12				1	13.0 mm	24.0 mm	1.2 mm	5.0 mm	DIN 137B	1	90394A117	0000

Curved Spring Lock Washers

The curvy, spring-like shape adds a small amount of tension to prevent nuts and screws from backing out due to mild vibration. These washers also flex slightly to compensate for uneven surfaces. While more secure than a standard flat washer, these have the least amount of gripping power of all our lock washers. They are best suited for electrical panels, light fixtures, and other light duty assemblies. These washers hold their shape when untightened, so you can reuse them a handful of times without losing strength.

Highly Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these washers won't degrade when exposed to harsh weather, salt water, and most chemicals.

Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.

Zinc-Yellow-Chromate-Plated Steel—With the same corrosion resistance as zinc-plated steel, these withstand occasional exposure to moisture.

Steel—Best for dry environments since moisture will cause these washers to rust.

DIN 128A—These washers have split ends that bite into your material surface for a tighter hold than other curved washers.

	For Screw Size	ID, mm	OD, mm	Thk., mm	Overall Ht., mm	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel



		M2	2.2	4.5	0.3	1.0	DIN 137A	100	97099A101	00000


		M2.5	2.6	5.1	0.5	0.9	DIN 128A	100	97093A138	0000
		M3	3.1	6.2	0.6	1.1	DIN 128A	100	97093A139	0000
		M3	3.2	6.0	0.4	1.3	DIN 137A	100	97099A102	0000
		M4	4.1	7.6	0.7	1.2	DIN 128A	100	97093A141	0000
		M4	4.3	8.0	0.5	1.6	DIN 137A	100	97099A103	0000
		M5	5.1	9.2	0.9	1.5	DIN 128A	100	97093A142	00000
		M5	5.3	10.0	0.5	1.8	DIN 137A	100	97099A104	0000
		M6	6.1	11.8	1.2	2.0	DIN 128A	100	97093A143	00000
		M6	6.4	11.0	0.5	2.2	DIN 137A	100	97099A105	0000
		M8	8.1	14.8	1.5	2.5	DIN 128A	50	97093A144	0000


		M8	8.4	15.0	0.5	3.4	DIN 137A	100	97099A106	0000
		M10	10.2	18.1	1.7	2.9	DIN 128A	50	97093A145	00000
		M10	10.5	18.0	0.8	4.0	DIN 137A	50	97099A107	0000
		M12	12.2	21.1	2.0	3.4	DIN 128A	50	97093A146	00000
		M14	14.2	24.1	2.3	3.9	DIN 128A	25	97093A147	00000
		M16	16.2	27.4	2.7	4.5	DIN 128A	20	97093A148	00000
		M18	18.2	29.4	2.7	4.5	DIN 128A	10	97093A149	00000
		M20	20.2	33.6	3.0	5.1	DIN 128A	10	97093A151	00000
		M22	22.5	35.9	3.0	5.1	DIN 128A	5	97093A152	0000
		M24	24.5	40.0	3.8	6.5	DIN 128A	5	97093A153	00000


		Highly Corrosion-Resistant 316 Stainless Steel



				M4	4.3	8.0	0.5	1.6	DIN 137A	100	97079A101	0000


				M5	5.3	10.0	0.5	1.8	DIN 137A	100	97079A102	00000
				M6	6.4	11.0	0.5	2.2	DIN 137A	100	97079A103	00000
				M8	8.4	15.0	0.5	3.4	DIN 137A	100	97079A104	00000
				M10	10.5	18.0	0.8	4.0	DIN 137A	50	97079A105	00000


				Zinc-Plated Steel



						M2	2.2	4.5	0.3	1.0	DIN 137A	100	97069A101	0000


						M2.5	2.6	5.1	0.5	0.9	DIN 128A	100	97093A122	0000
						M3	3.1	6.2	0.6	1.1	DIN 128A	100	97093A123	0000
						M3	3.2	6.0	0.4	1.3	DIN 137A	100	97069A102	0000
						M3.5	3.7	7.0	0.4	1.4	DIN 137A	100	97069A103	0000
						M4	4.1	7.6	0.7	1.2	DIN 128A	100	97093A124	0000
						M4	4.3	8.0	0.5	1.6	DIN 137A	100	97069A104	0000
						M5	5.1	9.2	0.9	1.5	DIN 128A	100	97093A125	0000
						M5	5.3	10.0	0.5	1.8	DIN 137A	100	97069A105	0000
						M6	6.1	11.8	1.2	2.0	DIN 128A	100	97093A126	0000
						M6	6.4	11.0	0.5	2.2	DIN 137A	100	97069A106	0000


						M8	8.1	14.8	1.5	2.5	DIN 128A	100	97093A127	00000
						M8	8.4	15.0	0.5	3.4	DIN 137A	100	97069A107	0000
M10						10.2	18.1	1.7	2.9	DIN 128A	100	97093A128	00000
M10	10.5					18.0	0.8	4.0	DIN 137A	100	97069A108	00000
M12	12.2					21.1	2.0	3.4	DIN 128A	50	97093A129	00000
M14	14.2					24.1	2.3	3.9	DIN 128A	25	97093A131	00000
M16	16.2					27.4	2.7	4.5	DIN 128A	25	97093A132	00000
M18	18.2					29.4	2.7	4.5	DIN 128A	10	97093A133	0000
M20	20.2					33.6	3.0	5.1	DIN 128A	10	97093A134	00000
M22	22.5					35.9	3.0	5.1	DIN 128A	10	97093A135	00000


M24	24.5					40.0	3.8	6.5	DIN 128A	10	97093A136	00000
M30	30.5					48.2	5.8	9.5	DIN 128A	1	97093A137	0000


Zinc-Yellow-Chromate-Plated Steel



						M3	3.1	6.2	0.6	1.1	DIN 128A	100	96982A136	0000


						M3.5	3.6	6.7	0.6	1.1	DIN 128A	100	96982A137	0000
						M4	4.1	7.6	0.7	1.2	DIN 128A	100	96982A138	0000
						M5	5.1	9.2	0.9	1.5	DIN 128A	100	96982A139	0000
						M6	6.1	11.8	1.2	2	DIN 128A	100	96982A141	0000
						M8	8.1	14.8	1.5	2.5	DIN 128A	100	96982A142	0000
						M10	10.2	18.1	1.7	2.9	DIN 128A	100	96982A143	00000
						M12	12.2	21.1	2.0	3.4	DIN 128A	50	96982A144	0000
						M14	14.2	24.1	2.3	3.9	DIN 128A	25	96982A145	00000
						M16	16.2	27.4	2.7	4.5	DIN 128A	10	96982A146	00000
						M20	20.2	33.6	3.0	5.1	DIN 128A	10	96982A147	00000


		Steel



						M2.5	2.3	4.6	0.6	1.1	DIN 6905	200	91169A311	0000


						M3	2.7	5.6	0.7	1.3	DIN 6905	200	91169A312	0000
						M3	3.1	6.2	0.6	1.1	DIN 128A	100	97093A111	0000
						M4	3.6	7.0	0.8	1.4	DIN 6905	200	91169A314	00000
						M4	4.1	7.6	0.7	1.2	DIN 128A	100	97093A112	0000
						M5	4.6	8.6	1.0	1.7	DIN 6905	100	91169A315	00000
						M5	5.1	9.2	0.9	1.5	DIN 128A	100	97093A113	0000
				M6		5.5	11.0	1.3	2.2	DIN 6905	50	91169A316	00000
				M6	6.1	11.8	1.2	2.0	DIN 128A	50	97093A114	0000
				M8	7.4	14.0	1.6	2.8	DIN 6905	50	91169A317	00000
				M8	8.1	14.8	1.5	2.5	DIN 128A	50	97093A115	0000


				M10	9.3	17.0	1.8	3.2	DIN 6905	10	91169A318	00000
				M10	10.2	18.1	1.7	2.9	DIN 128A	25	97093A116	00000
				M12	11.0	19.7	2.1	3.7	DIN 6905	10	91169A319	00000
				M12	12.2	21.1	2.0	3.4	DIN 128A	10	97093A117	0000
				M16	16.2	27.4	2.7	4.5	DIN 128A	10	97093A118	0000
				M20	20.2	33.6	3.0	5.1	DIN 128A	5	97093A119	0000
				M24	24.5	40.0	3.8	6.5	DIN 128A	5	97093A121	00000

Countersunk Tooth Lock Washers

These washers grip flat- and oval-head countersunk screws, so you get a secure hold without overtightening. They resist loosening in applications with constant motion, such as conveyors. Tooth lock washers typically can't be reused because the teeth often get bent when tightened.

External Tooth

Teeth on the outside edge bite into both the screw head and the mating surface to lock the assembly in place.

Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.

DIN 6798—Best for slightly bumpy or irregular surfaces because the teeth are angled to make even contact with the material.

	ID	OD	Thk.	Countersink Angle	Specs. Met	Pkg. Qty.		Pkg.
Wear-Resistant 400 Series Stainless Steel



	No. 6	0.140"	0.289"	0.017" to 0.021"	82°	ASME B18.21.1	100	90900A007	00000


	No. 8	0.167"	0.322"	0.017" to 0.021"	82°	ASME B18.21.1	100	90900A009	0000
	No. 10	0.195"	0.354"	0.020" to 0.025"	82°	ASME B18.21.1	25	90900A012	0000
	No. 12	0.220"	0.421"	0.020" to 0.025"	82°	ASME B18.21.1	50	90900A111	0000
	1/4"	0.255"	0.454"	0.020" to 0.025"	82°	ASME B18.21.1	25	90900A030	0000
	5/16"	0.318"	0.599"	0.023" to 0.028"	82°	ASME B18.21.1	25	90900A112	0000


	Zinc-Plated Steel



			No. 4	0.113"	0.213"	0.015" to 0.019"	82°	ASME B18.21.1	50	90069A103	00000


			No. 6	0.140"	0.289"	0.017" to 0.021"	82°	ASME B18.21.1	100	90069A105	00000
			No. 8	0.167"	0.322"	0.017" to 0.021"	82°	ASME B18.21.1	100	90069A110	00000
			No. 10	0.195"	0.354"	0.020" to 0.025"	82°	ASME B18.21.1	50	90069A115	00000
			No. 12	0.220"	0.421"	0.020" to 0.025"	82°	ASME B18.21.1	100	90069A120	00000
			1/4"	0.255"	0.458"	0.022"	82°	ASME B18.21.1	100	90069A126	00000
			5/16"	0.318"	0.599"	0.023" to 0.028"	82°	ASME B18.21.1	100	90069A130	00000
			3/8"	0.383"	0.765"	0.028" to 0.034"	82°	ASME B18.21.1	25	90069A136	00000
			1/2"	0.512"	0.976"	0.037" to 0.045"	82°	ASME B18.21.1	10	90069A137	0000
			M3	3.2 mm	6.0 mm	0.2 mm to 0.3 mm	90°	DIN 6798	100	4340N111	00000
			M4	4.3 mm	8.0 mm	0.2 mm to 0.3 mm	90°	DIN 6798	100	4340N112	00000


			M5	5.3 mm	9.8 mm	0.3 mm to 0.4 mm	90°	DIN 6798	50	4340N113	00000
			M6	6.4 mm	11.8 mm	0.4 mm to 0.5 mm	90°	DIN 6798	50	4340N114	00000
			M8	8.4 mm	15.3 mm	0.4 mm to 0.5 mm	90°	DIN 6798	50	4340N115	00000
			M10	10.5 mm	19.0 mm	0.5 mm to 0.6 mm	90°	DIN 6798	25	4340N116	0000
			M12	13.0 mm	23.0 mm	0.5 mm to 0.6 mm	90°	DIN 6798	25	4340N117	00000


			Black-Oxide Steel



					No. 4	0.113"	0.213"	0.015" to 0.019"	82°	ASME B18.21.1	25	90069A211	0000


					No. 6	0.140"	0.289"	0.017" to 0.021"	82°	ASME B18.21.1	25	90069A212	00000
					No. 8	0.167"	0.322"	0.017" to 0.021"	82°	ASME B18.21.1	25	90069A213	0000
					No. 10	0.195"	0.354"	0.020" to 0.025"	82°	ASME B18.21.1	25	90069A214	00000
					No. 12	0.220"	0.421"	0.020" to 0.025"	82°	ASME B18.21.1	25	90069A215	0000
					1/4"	0.255"	0.454"	0.020" to 0.025"	82°	ASME B18.21.1	25	90069A216	0000
					5/16"	0.318"	0.599"	0.023" to 0.028"	82°	ASME B18.21.1	25	90069A217	0000
					3/8"	0.383"	0.765"	0.028" to 0.034"	82°	ASME B18.21.1	25	90069A218	00000
					1/2"	0.512"	0.976"	0.037" to 0.045"	82°	ASME B18.21.1	10	90069A219	00000

Tab Lock Washers

2 Tabs

1 Tab

Instead of relying on friction, these washers lock mechanically for more holding power than split and tooth lock washers. Bend the tabs with a wrench to stop both the fastener and washer from rotating. They are often used in applications with moderate vibration, such as motors, mixers, and pumps. These washers are not reusable because the tabs will weaken if you bend them repeatedly.

Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.

2 Tabs—Also known as pantleg washers, these have two tabs for a more secure hold than washers with one tab. Bend one tab up against the flats of your nut or screw and the other tab down over the edge of your mounting surface.

1 Tab—Bend the tab down over the edge of your mounting surface, and bend the side of the washer up against the nut or screw.

	ID	OD	Thk.	No. of Tabs	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	No. 10	0.204"	0.625"	0.036"	2	—	1	7508N11	00000


	1/4"	0.281"	0.75"	0.036"	2	—	1	7508N13	0000
	5/16"	0.343"	0.75"	0.036"	2	—	1	7508N14	0000
	3/8"	0.406"	0.875"	0.062"	2	—	1	7508N15	0000
	7/16"	0.500"	1.125"	0.062"	2	—	1	7508N16	0000
	1/2"	0.531"	1.125"	0.062"	2	—	1	7508N17	0000
	9/16"	0.595"	1.125"	0.062"	2	—	1	7508N18	0000
	5/8"	0.656"	1.25"	0.062"	2	—	1	7508N19	00000
	3/4"	0.781"	1.5"	0.062"	2	—	1	7508N21	00000
	7/8"	0.910"	1.75"	0.062"	2	—	1	7508N22	00000
	1"	1.031"	2"	0.094"	2	—	1	7508N23	00000


	1 1/4"	1.281"	2.5"	0.125"	2	—	1	7508N24	00000
	1 1/2"	1.531"	3"	0.125"	2	—	1	7508N25	00000
	M4	4.3 mm	14.0 mm	0.4 mm	1	DIN 93	100	97471A141	00000
	M5	5.3 mm	17.0 mm	0.5 mm	1	DIN 93	50	97471A142	00000
	M6	6.4 mm	19.0 mm	0.5 mm	1	DIN 93	50	97471A143	00000
	M8	8.4 mm	22.0 mm	0.8 mm	1	DIN 93	25	97471A144	0000
	M10	10.5 mm	26.0 mm	0.8 mm	1	DIN 93	25	97471A145	00000
	M12	13.0 mm	30.0 mm	1.0 mm	1	DIN 93	10	97471A146	0000


	Zinc-Plated Steel



			No. 10	0.204"	0.625"	0.036"	2	—	1	2741N17	0000


			1/4"	0.281"	0.75"	0.036"	2	—	1	2741N11	0000
			5/16"	0.343"	0.75"	0.036"	2	—	1	2741N12	0000
			3/8"	0.406"	0.875"	0.063"	2	—	1	2741N13	0000
			7/16"	0.500"	1.125"	0.062"	2	—	1	2741N19	0000
			1/2"	0.531"	1.125"	0.063"	2	—	1	2741N14	0000
			9/16"	0.595"	1.125"	0.062"	2	—	1	2741N21	0000
			5/8"	0.656"	1.25"	0.062"	2	—	1	2741N15	0000
			3/4"	0.781"	1.5"	0.063"	2	—	1	2741N16	0000
			7/8"	0.910"	1.75"	0.062"	2	—	1	2741N22	0000
			1"	1.031"	2"	0.094"	2	—	1	2741N23	0000


			1 1/4"	1.281"	2.5"	0.125"	2	—	1	2741N24	0000
			1 1/2"	1.531"	3"	0.125"	2	—	1	2741N25	0000

Tooth Lock Washer Assortments

Image of Product. Front orientation. Lock Washers. Sold as Assortments, Tooth Washer.

Keep a collection of tooth lock washers on hand to work with a range of screw sizes. The teeth bite into material to prevent fasteners from loosening in applications with constant movement, such as conveyors. External-tooth lock washers grip tighter than internal-tooth lock washers, however, they may mar your material and snag on objects. Tooth lock washers typically can't be reused because the teeth often get bent when tightened.

Labels in the lid include our part numbers, so it's easy to replenish the assortments.

Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.

	Sizes Included	Container Type		Each
Zinc-Plated Steel



	1,335	635 External Tooth Lock Washers (For No. 4 to 1/2" Screw Sizes) 700 Internal Tooth Lock Washers (For No. 2 to 3/8" Screw Sizes)	Plastic Box	98651A192	000000

Domed Tooth Lock Washers

Limit damage to your material while ensuring nuts and screws stay tight. These washers have a slight dome that flattens under pressure, distributing pressure over a wide surface area and eliminating stress points. They also have smooth tabs on the outside edge that add friction for a tight grip, without digging into your mounting surface the way a sharp tooth would. Tooth lock washers prevent fasteners from loosening in applications with constant movement, such as conveyors. They typically can't be reused because the teeth often get bent when tightened.

Internal Tooth

Internal teeth dig into the nut or screw to prevent it from backing out. They grip best on fasteners with small diameters, such as fillister and cheese head screws.

Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.

	ID	OD	Thk.	Pkg. Qty.		Pkg.
Zinc-Plated Steel



	No. 6	0.146"	0.569"	0.023" to 0.027"	10	97527A001	00000


	No. 8	0.168"	0.569"	0.023" to 0.027"	10	97527A003	00000
	No. 10	0.195"	0.569"	0.027" to 0.031"	10	97527A005	00000
	1/4"	0.256"	0.698"	0.048" to 0.052"	5	97527A007	00000
	5/16"	0.320"	0.885"	0.060" to 0.064"	5	97527A009	00000
	3/8"	0.384"	1.010"	0.060" to 0.064"	5	97527A011	00000

Coil Lock Washers

Image of Product. Front orientation. Lock Washers. Coil Washer.

Washers flatten under pressure and push against the nut or screw to stop it from backing out. The double coil adds more tension than split lock washers for a tighter hold on materials that contract and expand, such as plastic and wood. These washers are reusable a handful of times, but their holding power decreases with each use.

	ID	OD	Thk.	Specs. Met	Pkg. Qty.		Pkg.
Corrosion-Resistant Galvanized Steel



	3/8"	0.381"	0.680"	0.094"	ASME B18.21.1	5	92353A110	00000


	1/2"	0.507"	0.869"	0.125"	ASME B18.21.1	1	92353A120	0000
	5/8"	0.634"	1.073"	0.156"	ASME B18.21.1	1	92353A130	0000
	3/4"	0.759"	1.265"	0.188"	ASME B18.21.1	1	92353A140	0000

Split Lock Washer Assortments

Image of Product. Front orientation. Lock Washers. Sold as Assortments, Split-Lock Washer.

Keep a collection of common lock washers on hand to stop nuts and screws from loosening due to mild vibration. These washers have split ends that bite into the fastener to keep it secure. While they're not as vibration resistant as other lock washers, they are a great fit for electrical panels, light fixtures, and other light duty assemblies. Split lock washers are not reusable, and they only work with fasteners that have right-hand threads.

Labels in the lid include our part numbers, so it's easy to replenish the assortments.

Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.

Steel—Best for dry environments since moisture will cause these washers to rust.

	Sizes Included	Specs. Met	Container Type		Each
18-8 Stainless Steel



	350	For No. 8 to 1/2" Screw Sizes	—	Plastic Box	92155A320	000000


	755	For M3 to M20 Screw Sizes	DIN 127B	Plastic Box	91170A409	000000
	1,350	For No. 4 to 1" Screw Sizes	—	Metal Box	92155A212	000000


	Zinc-Plated Steel



			350	For No. 8 to 1/2" Screw Sizes	—	Plastic Box	91765A224	00000


			1,350	For No. 4 to 1" Screw Sizes	—	Metal Box	91765A112	000000


			Steel



					755	For M3 to M20 Screw Sizes	DIN 127B	Plastic Box	91170A109	00000

Split Lock Washers

Compatible Products for This Lock Washer

Tooth Lock Washers

Split Lock Washers for Socket Head Screws

Extreme-Vibration-Resistant Wedge Lock Washers

Mil. Spec. Split Lock Washers

Heavy-Vibration-Resistant Spring Lock Washers

Heavy-Vibration-Resistant Spring Lock Washers for Socket Head Screws

Mil. Spec. Tooth Lock Washers

Wave Spring Lock Washers

Curved Spring Lock Washers

Countersunk Tooth Lock Washers

Tab Lock Washers

Tooth Lock Washer Assortments

Domed Tooth Lock Washers

Coil Lock Washers

Split Lock Washer Assortments