Helical Spring Lock Washers

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686 Products

Washer Type

Split

Stop nuts and screws from loosening due to light vibration

682 products

Wave

Keep bolted assemblies secure on slightly uneven surfaces

19 products

Washer Type

Curved

Prevent fasteners from loosening due to slight movement

58 products

Coil

Add more tension than split lock for materials that contract and expand

4 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
		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

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.

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.

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

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

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

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.

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.

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



	M2.5	2.6	5.1	0.5	0.9	DIN 128A	100	97093A138	00000


	M3	3.1	6.2	0.6	1.1	DIN 128A	100	97093A139	0000
	M4	4.1	7.6	0.7	1.2	DIN 128A	100	97093A141	0000
	M5	5.1	9.2	0.9	1.5	DIN 128A	100	97093A142	00000
	M6	6.1	11.8	1.2	2.0	DIN 128A	100	97093A143	00000
	M8	8.1	14.8	1.5	2.5	DIN 128A	50	97093A144	0000
	M10	10.2	18.1	1.7	2.9	DIN 128A	50	97093A145	00000
	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


	Zinc-Plated Steel



			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
			M4	4.1	7.6	0.7	1.2	DIN 128A	100	97093A124	0000
			M5	5.1	9.2	0.9	1.5	DIN 128A	100	97093A125	0000
			M6	6.1	11.8	1.2	2.0	DIN 128A	100	97093A126	0000
			M8	8.1	14.8	1.5	2.5	DIN 128A	100	97093A127	00000
			M10	10.2	18.1	1.7	2.9	DIN 128A	100	97093A128	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

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.

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

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

	No. of Waves	ID, mm	OD, mm	Thk., mm	Overall Ht., mm	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	M4	1	4.4	7.6	0.7	1.4	DIN 128B	50	97093A174	00000


	M5	1	5.4	9.2	0.9	1.7	DIN 128B	25	97093A175	0000
	M6	1	6.5	11.8	1.2	2.2	DIN 128B	25	97093A176	0000
	M8	1	8.5	14.8	1.5	2.7	DIN 128B	25	97093A177	0000
	M10	1	10.7	18.1	1.7	3.1	DIN 128B	25	97093A178	00000
	M12	1	12.7	21.1	1.9	3.6	DIN 128B	10	97093A179	0000
	M16	1	17.0	27.4	2.6	5.1	DIN 128B	1	97093A182	0000


	Zinc-Plated Steel



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


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


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

Split Lock Washer Assortments

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

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