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	000000000	00000


		No. 0	0.062"	0.137"	0.015"	—	—	1,000	000000000	00000
		No. 1	0.075"	0.150"	0.015"	—	—	100	000000000	0000
		No. 1	0.075"	0.150"	0.015"	—	—	1,000	000000000	00000
		No. 2	0.094"	0.172"	0.020"	—	ASME B18.21.1	100	000000000	0000
		No. 2	0.094"	0.172"	0.020"	—	ASME B18.21.1	1,000	000000000	00000
		No. 3	0.107"	0.195"	0.025"	—	ASME B18.21.1	100	000000000	0000
		No. 3	0.107"	0.195"	0.025"	—	ASME B18.21.1	1,000	000000000	00000
		No. 4	0.120"	0.209"	0.025"	—	ASME B18.21.1	100	000000000	0000
		No. 4	0.120"	0.209"	0.025"	—	ASME B18.21.1	1,000	000000000	00000
		No. 4	0.120"	0.223"	0.031"	—	ASME B18.21.1	100	000000000	0000


		No. 5	0.133"	0.236"	0.031"	—	ASME B18.21.1	100	000000000	0000
		No. 5	0.133"	0.236"	0.031"	—	ASME B18.21.1	1,000	000000000	00000
		No. 6	0.148"	0.250"	0.031"	—	ASME B18.21.1	100	000000000	0000
		No. 6	0.148"	0.250"	0.031"	—	ASME B18.21.1	1,000	000000000	00000
		No. 6	0.148"	0.266"	0.040"	—	ASME B18.21.1	100	000000000	0000
		No. 8	0.174"	0.293"	0.040"	—	ASME B18.21.1	100	000000000	0000
		No. 8	0.174"	0.293"	0.040"	—	ASME B18.21.1	1,000	000000000	00000
		No. 8	0.174"	0.307"	0.047"	—	ASME B18.21.1	100	000000000	0000
		No. 10	0.200"	0.334"	0.047"	—	ASME B18.21.1	100	000000000	0000
		No. 10	0.200"	0.334"	0.047"	—	ASME B18.21.1	1,000	000000000	00000


		No. 10	0.200"	0.350"	0.056"	—	ASME B18.21.1	100	000000000	0000
		No. 12	0.227"	0.377"	0.056"	—	ASME B18.21.1	100	000000000	0000
		1/4"	0.260"	0.487"	0.062"	—	ASME B18.21.1	100	000000000	0000
		1/4"	0.260"	0.489"	0.077"	—	ASME B18.21.1	50	000000000	0000
		5/16"	0.322"	0.583"	0.078"	—	ASME B18.21.1	100	000000000	0000
		5/16"	0.322"	0.594"	0.097"	—	ASME B18.21.1	50	000000000	00000
		3/8"	0.385"	0.680"	0.094"	—	ASME B18.21.1	100	000000000	0000
		3/8"	0.385"	0.688"	0.115"	—	ASME B18.21.1	25	000000000	0000
		7/16"	0.450"	0.776"	0.109"	—	ASME B18.21.1	50	000000000	0000
		1/2"	0.512"	0.869"	0.125"	—	ASME B18.21.1	50	000000000	0000


		1/2"	0.512"	0.879"	0.151"	—	ASME B18.21.1	10	000000000	0000
		9/16"	0.574"	0.965"	0.141"	—	ASME B18.21.1	25	000000000	0000
		5/8"	0.641"	1.073"	0.156"	—	ASME B18.21.1	25	000000000	0000
		5/8"	0.641"	1.087"	0.189"	—	ASME B18.21.1	5	000000000	0000
		3/4"	0.766"	1.265"	0.188"	—	ASME B18.21.1	10	000000000	0000
		3/4"	0.766"	1.285"	0.226"	—	ASME B18.21.1	1	000000000	0000
		7/8"	0.894"	1.459"	0.219"	—	ASME B18.21.1	5	000000000	0000
		1"	1.024"	1.656"	0.250"	—	ASME B18.21.1	5	000000000	0000
		1 1/8"	1.153"	1.847"	0.281"	—	ASME B18.21.1	1	000000000	0000
		1 1/4"	1.280"	2.036"	0.312"	—	ASME B18.21.1	1	000000000	0000


		1 3/8"	1.408"	2.219"	0.344"	—	ASME B18.21.1	1	000000000	0000
		1 1/2"	1.534"	2.419"	0.375"	—	ASME B18.21.1	1	000000000	0000
		1 5/8"	1.663"	2.553"	0.389"	—	ASME B18.21.1	1	000000000	0000
		1 3/4"	1.789"	2.679"	0.389"	—	ASME B18.21.1	1	000000000	00000
		1 7/8"	1.914"	2.811"	0.422"	—	ASME B18.21.1	1	000000000	00000
		2"	2.039"	2.936"	0.422"	—	ASME B18.21.1	1	000000000	00000
		2 1/4"	2.293"	3.221"	0.440"	—	ASME B18.21.1	1	000000000	00000
		2 1/2"	2.543"	3.471"	0.440"	—	ASME B18.21.1	1	000000000	00000
		M2	2.4 mm	4.4 mm	0.4 mm to 0.6 mm	—	DIN 127B	100	000000000	0000
		M2.5	2.9 mm	5.1 mm	0.5 mm to 0.7 mm	—	DIN 127B	100	000000000	0000

M2.6	3.0 mm	5.2 mm	0.5 mm to 0.7 mm	—	DIN 127B	100	000000000	0000
M3	3.4 mm	6.2 mm	0.7 mm to 0.9 mm	—	DIN 127B	100	000000000	0000
M3.5	3.9 mm	6.7 mm	0.7 mm to 0.9 mm	—	DIN 127B	100	000000000	0000
M4	4.4 mm	7.6 mm	0.8 mm to 1.0 mm	—	DIN 127B	100	000000000	0000
M5	5.4 mm	9.2 mm	1.1 mm to 1.3 mm	—	DIN 127B	100	000000000	0000
M6	6.5 mm	11.8 mm	1.5 mm to 1.7 mm	—	DIN 127B	100	000000000	0000
M7	7.5 mm	12.8 mm	1.5 mm to 1.7 mm	—	DIN 127B	50	000000000	0000
M8	8.5 mm	14.8 mm	1.9 mm to 2.1 mm	—	DIN 127B	100	000000000	0000
M10	10.7 mm	18.1 mm	2.0 mm to 2.4 mm	—	DIN 127B	100	000000000	00000
M12	12.7 mm	21.1 mm	2.3 mm to 2.7 mm	—	DIN 127B	50	000000000	00000
M14	14.7 mm	24.1 mm	2.8 mm to 3.2 mm	—	DIN 127B	25	000000000	00000
M16	17.0 mm	27.4 mm	3.3 mm to 3.7 mm	—	DIN 127B	25	000000000	00000
M18	19.0 mm	29.4 mm	3.3 mm to 3.7 mm	—	DIN 127B	10	000000000	0000
M20	21.2 mm	33.6 mm	3.8 mm to 4.2 mm	—	DIN 127B	10	000000000	0000
M22	22.5 mm	35.9 mm	3.8 mm to 4.2 mm	—	DIN 127B	5	000000000	0000
M24	25.5 mm	40.0 mm	4.8 mm to 5.2 mm	—	DIN 127B	10	000000000	00000
M27	27.5 mm	43.0 mm	4.8 mm to 5.2 mm	—	DIN 127B	5	000000000	00000
M30	31.7 mm	48.2 mm	5.8 mm to 6.2 mm	—	DIN 127B	1	000000000	0000
M36	37.7 mm	58.2 mm	5.8 mm to 6.2 mm	—	DIN 127B	1	000000000	0000

Black-Oxide 18-8 Stainless Steel



		No. 2	0.094"	0.172"	0.020"	—	ASME B18.21.1	100	000000000	0000


		No. 4	0.120"	0.209"	0.025"	—	ASME B18.21.1	100	000000000	0000
		No. 6	0.148"	0.250"	0.031"	—	ASME B18.21.1	100	000000000	0000
		No. 8	0.174"	0.293"	0.040"	—	ASME B18.21.1	100	000000000	0000
		No. 10	0.200"	0.334"	0.047"	—	ASME B18.21.1	100	000000000	0000
		1/4"	0.260"	0.487"	0.062"	—	ASME B18.21.1	100	000000000	0000
		5/16"	0.322"	0.583"	0.078"	—	ASME B18.21.1	100	000000000	0000
		3/8"	0.385"	0.680"	0.094"	—	ASME B18.21.1	50	000000000	0000
		1/2"	0.512"	0.869"	0.125"	—	ASME B18.21.1	25	000000000	0000
		M2	2.4 mm	4.4 mm	0.4 mm to 0.6 mm	—	DIN 127B	10	000000000	0000
		M2.5	2.9 mm	5.1 mm	0.5 mm to 0.7 mm	—	DIN 127B	10	000000000	0000


		M3	3.4 mm	6.2 mm	0.7 mm to 0.9 mm	—	DIN 127B	10	000000000	0000
		M5	5.4 mm	9.2 mm	1.1 mm to 1.3 mm	—	DIN 127B	10	000000000	0000
		M6	6.5 mm	11.8 mm	1.5 mm to 1.7 mm	—	DIN 127B	10	000000000	0000
		M8	8.5 mm	14.8 mm	1.9 mm to 2.1 mm	—	DIN 127B	10	000000000	0000
		M10	10.7 mm	18.1 mm	2.0 mm to 2.4 mm	—	DIN 127B	10	000000000	0000
		M12	12.7 mm	21.1 mm	2.3 mm to 2.7 mm	—	DIN 127B	10	000000000	0000
		M16	17.0 mm	27.4 mm	3.3 mm to 3.7 mm	—	DIN 127B	10	000000000	0000
		M20	21.2 mm	33.6 mm	3.8 mm to 4.2 mm	—	DIN 127B	10	000000000	00000


		Highly-Corrosion-Resistant 316 Stainless Steel



				No. 0	0.062"	0.137"	0.015"	—	—	100	000000000	0000


				No. 2	0.094"	0.172"	0.020"	—	ASME B18.21.1	100	000000000	0000
				No. 2	0.094"	0.172"	0.020"	—	ASME B18.21.1	1,000	000000000	00000
				No. 3	0.107"	0.195"	0.025"	—	ASME B18.21.1	100	000000000	0000
				No. 4	0.120"	0.209"	0.025"	—	ASME B18.21.1	100	000000000	0000
				No. 4	0.120"	0.209"	0.025"	—	ASME B18.21.1	1,000	000000000	00000
				No. 5	0.133"	0.236"	0.031"	—	ASME B18.21.1	100	000000000	0000
				No. 6	0.148"	0.250"	0.031"	—	ASME B18.21.1	100	000000000	0000
				No. 6	0.148"	0.250"	0.031"	—	ASME B18.21.1	1,000	000000000	00000
				No. 8	0.174"	0.293"	0.040"	—	ASME B18.21.1	100	000000000	0000
				No. 8	0.174"	0.293"	0.040"	—	ASME B18.21.1	1,000	000000000	00000


				No. 10	0.200"	0.334"	0.047"	—	ASME B18.21.1	100	000000000	0000
				No. 10	0.200"	0.334"	0.047"	—	ASME B18.21.1	1,000	000000000	00000
				No. 12	0.227"	0.377"	0.056"	—	ASME B18.21.1	100	000000000	0000
				1/4"	0.260"	0.487"	0.062"	—	ASME B18.21.1	100	000000000	0000
				5/16"	0.322"	0.583"	0.078"	—	ASME B18.21.1	100	000000000	00000
				3/8"	0.385"	0.680"	0.094"	—	ASME B18.21.1	50	000000000	0000
				7/16"	0.450"	0.776"	0.109"	—	ASME B18.21.1	25	000000000	0000
				1/2"	0.512"	0.869"	0.125"	—	ASME B18.21.1	25	000000000	0000
				9/16"	0.574"	0.965"	0.141"	—	ASME B18.21.1	25	000000000	00000
				5/8"	0.641"	1.073"	0.156"	—	ASME B18.21.1	10	000000000	0000


				3/4"	0.766"	1.265"	0.188"	—	ASME B18.21.1	10	000000000	00000
				7/8"	0.894"	1.459"	0.219"	—	ASME B18.21.1	5	000000000	0000
				1"	1.024"	1.656"	0.250"	—	ASME B18.21.1	5	000000000	00000
				1 1/8"	1.153"	1.847"	0.281"	—	ASME B18.21.1	1	000000000	0000
				1 1/4"	1.280"	2.036"	0.312"	—	ASME B18.21.1	1	000000000	0000
1 3/8"				1.408"	2.219"	0.344"	—	ASME B18.21.1	1	000000000	0000
1 1/2"	1.534"			2.419"	0.375"	—	ASME B18.21.1	1	000000000	00000
1 5/8"	1.663"			2.553"	0.389"	—	ASME B18.21.1	1	000000000	00000
1 3/4"	1.789"			2.679"	0.389"	—	ASME B18.21.1	1	000000000	00000
2"	2.039"			2.936"	0.422"	—	ASME B18.21.1	1	000000000	00000


2 1/4"	2.293"			3.221"	0.440"	—	ASME B18.21.1	1	000000000	00000
M2	2.4 mm			4.4 mm	0.4 mm to 0.6 mm	—	DIN 127B	100	000000000	0000
M2.5	2.9 mm			5.1 mm	0.5 mm to 0.7 mm	—	DIN 127B	100	000000000	0000
M3	3.4 mm			6.2 mm	0.7 mm to 0.9 mm	—	DIN 127B	100	000000000	0000
M3.5	3.9 mm			6.7 mm	0.7 mm to 0.9 mm	—	DIN 127B	100	000000000	0000
M4	4.4 mm			7.6 mm	0.8 mm to 1.0 mm	—	DIN 127B	100	000000000	0000
M5	5.4 mm			9.2 mm	1.1 mm to 1.3 mm	—	DIN 127B	100	000000000	0000
M6	6.5 mm			11.8 mm	1.5 mm to 1.7 mm	—	DIN 127B	100	000000000	0000
M8	8.5 mm			14.8 mm	1.9 mm to 2.1 mm	—	DIN 127B	100	000000000	0000
M10	10.7 mm			18.1 mm	2.0 mm to 2.4 mm	—	DIN 127B	50	000000000	0000


M12	12.7 mm			21.1 mm	2.3 mm to 2.7 mm	—	DIN 127B	50	000000000	00000
M14	14.7 mm			24.1 mm	2.8 mm to 3.2 mm	—	DIN 127B	25	000000000	0000
M16	17.0 mm			27.4 mm	3.3 mm to 3.7 mm	—	DIN 127B	10	000000000	0000
M18	19.0 mm			29.4 mm	3.3 mm to 3.7 mm	—	DIN 127B	10	000000000	0000
M20	21.2 mm			33.6 mm	3.8 mm to 4.2 mm	—	DIN 127B	10	000000000	0000
M24	25.5 mm			40.0 mm	4.8 mm to 5.2 mm	—	DIN 127B	5	000000000	0000
M30	31.7 mm			48.2 mm	5.8 mm to 6.2 mm	—	DIN 127B	1	000000000	0000


Zinc-Plated Steel



		No. 2	0.094"	0.172"	0.020"	—	ASME B18.21.1	100	000000000	0000


		No. 3	0.107"	0.195"	0.025"	—	ASME B18.21.1	100	000000000	0000
		No. 3	0.107"	0.195"	0.025"	—	ASME B18.21.1	1,000	000000000	00000
		No. 4	0.120"	0.209"	0.025"	—	ASME B18.21.1	100	000000000	0000
		No. 4	0.120"	0.209"	0.025"	—	ASME B18.21.1	1,000	000000000	00000
		No. 5	0.133"	0.236"	0.031"	—	ASME B18.21.1	100	000000000	0000
		No. 5	0.133"	0.236"	0.031"	—	ASME B18.21.1	1,000	000000000	00000
		No. 6	0.148"	0.250"	0.031"	—	ASME B18.21.1	100	000000000	0000
		No. 6	0.148"	0.250"	0.031"	—	ASME B18.21.1	1,000	000000000	0000
		No. 8	0.174"	0.293"	0.040"	—	ASME B18.21.1	100	000000000	0000
		No. 8	0.174"	0.293"	0.040"	—	ASME B18.21.1	1,000	000000000	0000


		No. 10	0.200"	0.334"	0.047"	—	ASME B18.21.1	100	000000000	0000
		No. 10	0.200"	0.334"	0.047"	—	ASME B18.21.1	1,000	000000000	00000
		No. 12	0.227"	0.377"	0.056"	—	ASME B18.21.1	100	000000000	0000
		No. 12	0.227"	0.377"	0.056"	—	ASME B18.21.1	1,000	000000000	00000
		1/4"	0.260"	0.487"	0.062"	—	ASME B18.21.1	100	000000000	0000
		1/4"	0.260"	0.487"	0.062"	—	ASME B18.21.1	1,000	000000000	00000
		1/4"	0.272"	0.489"	0.062"	—	ASME B18.21.1	100	000000000	0000
		5/16"	0.322"	0.583"	0.078"	—	ASME B18.21.1	100	000000000	0000
		5/16"	0.322"	0.583"	0.078"	—	ASME B18.21.1	1,000	000000000	00000
		3/8"	0.385"	0.680"	0.094"	—	ASME B18.21.1	100	000000000	0000


		3/8"	0.385"	0.680"	0.094"	—	ASME B18.21.1	1,000	000000000	00000
		3/8"	0.397"	0.688"	0.094"	—	ASME B18.21.1	50	000000000	0000
		7/16"	0.450"	0.776"	0.109"	—	ASME B18.21.1	100	000000000	0000
		7/16"	0.450"	0.776"	0.109"	—	ASME B18.21.1	1,000	000000000	00000
		1/2"	0.512"	0.869"	0.125"	—	ASME B18.21.1	100	000000000	00000
		1/2"	0.512"	0.869"	0.125"	—	ASME B18.21.1	1,000	000000000	00000
		1/2"	0.522"	0.879"	0.125"	—	ASME B18.21.1	25	000000000	0000
		9/16"	0.574"	0.965"	0.141"	—	ASME B18.21.1	100	000000000	00000
		5/8"	0.641"	1.073"	0.156"	—	ASME B18.21.1	50	000000000	0000
		3/4"	0.766"	1.265"	0.188"	—	ASME B18.21.1	50	000000000	00000


		7/8"	0.894"	1.459"	0.219"	—	ASME B18.21.1	25	000000000	00000
		1"	1.024"	1.656"	0.250"	—	ASME B18.21.1	10	000000000	0000
		1 1/8"	1.153"	1.847"	0.281"	—	ASME B18.21.1	10	000000000	00000
		1 1/4"	1.280"	2.036"	0.312"	—	ASME B18.21.1	5	000000000	0000
		1 3/8"	1.408"	2.219"	0.344"	—	ASME B18.21.1	5	000000000	00000
		1 1/2"	1.534"	2.419"	0.375"	—	ASME B18.21.1	1	000000000	0000
		1 3/4"	1.789"	2.679"	0.389"	—	ASME B18.21.1	1	000000000	0000
		2"	2.039"	2.936"	0.422"	—	ASME B18.21.1	1	000000000	0000
		M2	2.4 mm	4.4 mm	0.4 mm to 0.6 mm	—	DIN 127B	100	000000000	0000
		M2.5	2.9 mm	5.1 mm	0.5 mm to 0.7 mm	—	DIN 127B	100	000000000	0000


		M3	3.4 mm	6.2 mm	0.7 mm to 0.9 mm	—	DIN 127B	100	000000000	0000
		M3.5	3.6 mm	6.7 mm	0.7 mm to 0.9 mm	—	DIN 127B	100	000000000	0000
		M4	4.4 mm	7.6 mm	0.8 mm to 1.0 mm	—	DIN 127B	100	000000000	0000
		M5	5.4 mm	9.2 mm	1.1 mm to 1.3 mm	—	DIN 127B	100	000000000	0000
		M6	6.5 mm	11.8 mm	1.5 mm to 1.7 mm	—	DIN 127B	100	000000000	0000
		M7	7.5 mm	12.8 mm	1.5 mm to 1.7 mm	—	DIN 127B	100	000000000	0000
		M8	8.5 mm	14.8 mm	1.9 mm to 2.1 mm	—	DIN 127B	100	000000000	0000
		M10	10.7 mm	18.1 mm	2.0 mm to 2.4 mm	—	DIN 127B	100	000000000	0000
		M12	12.7 mm	21.1 mm	2.3 mm to 2.7 mm	—	DIN 127B	100	000000000	00000
		M14	14.7 mm	24.1 mm	2.8 mm to 3.2 mm	—	DIN 127B	100	000000000	00000

M16	17.0 mm	27.4 mm	3.3 mm to 3.7 mm	—	DIN 127B	50	000000000	00000
M18	19.0 mm	29.4 mm	3.3 mm to 3.7 mm	—	DIN 127B	25	000000000	00000
M20	21.2 mm	33.6 mm	3.8 mm to 4.2 mm	—	DIN 127B	25	000000000	00000
M22	22.5 mm	35.9 mm	3.8 mm to 4.2 mm	—	DIN 127B	10	000000000	00000
M24	25.5 mm	40.0 mm	4.8 mm to 5.2 mm	—	DIN 127B	25	000000000	00000
M27	28.5 mm	43.0 mm	4.8 mm to 5.2 mm	—	DIN 127B	10	000000000	00000
M30	31.7 mm	48.2 mm	5.8 mm to 6.2 mm	—	DIN 127B	10	000000000	00000
M33	33.5 mm	55.2 mm	5.8 mm to 6.2 mm	—	DIN 127B	5	000000000	00000
M36	37.7 mm	58.2 mm	5.8 mm to 6.2 mm	—	DIN 127B	5	000000000	00000
M42	43.7 mm	68.2 mm	6.8 mm to 7.2 mm	—	DIN 127B	1	000000000	00000
M48	50.5 mm	75.0 mm	6.8 mm to 7.2 mm	—	DIN 127B	1	000000000	00000

Zinc-Yellow-Chromate-Plated Steel



		1/4"	0.260"	0.487"	0.062"	SAE Grade 8	ASME B18.21.1	100	000000000	0000


		5/16"	0.322"	0.583"	0.078"	SAE Grade 8	ASME B18.21.1	100	000000000	0000
		3/8"	0.385"	0.680"	0.094"	SAE Grade 8	ASME B18.21.1	100	000000000	0000
		7/16"	0.450"	0.776"	0.109"	SAE Grade 8	ASME B18.21.1	100	000000000	00000
		1/2"	0.512"	0.869"	0.125"	SAE Grade 8	ASME B18.21.1	100	000000000	00000
		9/16"	0.574"	0.965"	0.141"	SAE Grade 8	ASME B18.21.1	50	000000000	00000
		5/8"	0.641"	1.073"	0.156"	SAE Grade 8	ASME B18.21.1	50	000000000	00000
		3/4"	0.766"	1.265"	0.188"	SAE Grade 8	ASME B18.21.1	25	000000000	00000
		7/8"	0.894"	1.459"	0.219"	SAE Grade 8	ASME B18.21.1	10	000000000	0000
		1"	1.024"	1.656"	0.250"	SAE Grade 8	ASME B18.21.1	10	000000000	00000
		1 1/8"	1.153"	1.903"	0.345"	SAE Grade 8	ASME B18.21.1	5	000000000	00000


		1 1/4"	1.280"	2.104"	0.384"	SAE Grade 8	ASME B18.21.1	1	000000000	0000
		1 3/8"	1.408"	2.301"	0.422"	SAE Grade 8	ASME B18.21.1	1	000000000	0000
		1 1/2"	1.534"	2.491"	0.458"	SAE Grade 8	ASME B18.21.1	1	000000000	00000
		2"	2.039"	3.144"	0.496"	SAE Grade 8	ASME B18.21.1	1	000000000	00000
		M3	3.4 mm	6.2 mm	0.7 mm to 0.9 mm	—	DIN 127B	100	000000000	0000
		M4	4.4 mm	7.6 mm	0.8 mm to 1.0 mm	—	DIN 127B	100	000000000	0000
		M5	5.4 mm	9.2 mm	1.1 mm to 1.3 mm	—	DIN 127B	100	000000000	0000
		M6	6.5 mm	11.8 mm	1.5 mm to 1.7 mm	—	DIN 127B	100	000000000	0000
		M8	8.5 mm	14.8 mm	1.9 mm to 2.1 mm	—	DIN 127B	100	000000000	0000
		M10	10.7 mm	18.1 mm	2.0 mm to 2.4 mm	—	DIN 127B	100	000000000	00000


		M12	12.7 mm	21.1 mm	2.3 mm to 2.7 mm	—	DIN 127B	50	000000000	0000
		M14	14.7 mm	24.1 mm	2.8 mm to 3.2 mm	—	DIN 127B	50	000000000	00000
		M16	17.0 mm	27.4 mm	3.3 mm to 3.7 mm	—	DIN 127B	25	000000000	0000
		M18	19.0 mm	29.4 mm	3.3 mm to 3.7 mm	—	DIN 127B	25	000000000	00000
		M20	21.2 mm	33.6 mm	3.8 mm to 4.2 mm	—	DIN 127B	10	000000000	0000
		M24	25.5 mm	40.0 mm	4.8 mm to 5.2 mm	—	DIN 127B	10	000000000	0000
		M30	31.7 mm	48.2 mm	5.8 mm to 6.2 mm	—	DIN 127B	5	000000000	00000


		Black-Oxide Steel



				1/4"	0.260"	0.487"	0.062"	—	ASME B18.21.1	50	00000000	0000


				5/16"	0.322"	0.583"	0.078"	—	ASME B18.21.1	50	00000000	0000
				3/8"	0.385"	0.680"	0.094"	—	ASME B18.21.1	25	00000000	0000
				7/16"	0.450"	0.776"	0.109"	—	ASME B18.21.1	25	00000000	0000
				1/2"	0.512"	0.869"	0.125"	—	ASME B18.21.1	10	00000000	0000
				9/16"	0.574"	0.965"	0.141"	—	ASME B18.21.1	10	00000000	0000
				5/8"	0.641"	1.073"	0.156"	—	ASME B18.21.1	10	00000000	0000
				3/4"	0.766"	1.265"	0.188"	—	ASME B18.21.1	5	00000000	0000
				7/8"	0.894"	1.459"	0.219"	—	ASME B18.21.1	5	00000000	00000
				1"	1.024"	1.656"	0.250"	—	ASME B18.21.1	1	00000000	0000
				1 1/8"	1.153"	1.847"	0.281"	—	ASME B18.21.1	1	00000000	0000


				1 1/4"	1.280"	2.036"	0.312"	—	ASME B18.21.1	1	00000000	0000
				1 3/8"	1.408"	2.219"	0.344"	—	ASME B18.21.1	1	00000000	00000
				1 1/2"	1.534"	2.419"	0.375"	—	ASME B18.21.1	1	00000000	00000
				1 3/4"	1.789"	2.679"	0.389"	—	ASME B18.21.1	1	00000000	00000
				2"	2.039"	2.936"	0.422"	—	ASME B18.21.1	1	00000000	00000
				M6	6.5 mm	11.8 mm	1.5 mm to 1.7 mm	—	DIN 127B	100	000000000	00000
M8				8.5 mm	14.8 mm	1.9 mm to 2.1 mm	—	DIN 127B	100	000000000	00000
M10	10.7 mm			18.1 mm	2.0 mm to 2.4 mm	—	DIN 127B	50	000000000	0000
M16	17.0 mm			27.4 mm	3.3 mm to 3.7 mm	—	DIN 127B	25	000000000	0000


Blue-Dyed Steel



				M3	3.4 mm	6.2 mm	0.7 mm to 0.9 mm	—	DIN 127B	100	000000000	0000


				M4	4.5 mm	7.6 mm	0.8 mm to 1.0 mm	—	DIN 127B	100	000000000	0000
				M5	5.4 mm	9.2 mm	1.1 mm to 1.3 mm	—	DIN 127B	100	000000000	0000
				M6	6.2 mm	12.1 mm	2.0 mm	—	ASME B18.21.2M	100	000000000	00000
				M6	6.5 mm	11.8 mm	1.5 mm to 1.7 mm	—	DIN 127B	50	000000000	0000
				M8	8.2 mm	15.2 mm	2.5 mm	—	ASME B18.21.2M	100	000000000	0000
				M8	8.5 mm	14.8 mm	1.9 mm to 2.1 mm	—	DIN 127B	50	000000000	0000
				M10	10.2 mm	18.0 mm	2.9 mm	—	ASME B18.21.2M	50	000000000	0000
				M10	10.7 mm	18.1 mm	2.0 mm to 2.4 mm	—	DIN 127B	25	000000000	0000
				M12	12.3 mm	21.7 mm	3.8 mm	—	ASME B18.21.2M	100	000000000	00000
				M12	12.7 mm	21.1 mm	2.3 mm to 2.7 mm	—	DIN 127B	25	000000000	0000


				M16	16.4 mm	27.9 mm	4.8 mm	—	ASME B18.21.2M	25	000000000	00000
				M16	17.0 mm	27.4 mm	3.3 mm to 3.7 mm	—	DIN 127B	25	000000000	00000
				M20	20.5 mm	33.8 mm	5.7 mm	—	ASME B18.21.2M	10	000000000	0000
				M20	21.2 mm	33.6 mm	3.8 mm to 4.2 mm	—	DIN 127B	10	000000000	0000
				M24	24.5 mm	40.7 mm	7.2 mm	—	ASME B18.21.2M	10	000000000	00000


				Steel



						No. 5	0.133"	0.236"	0.031"	—	ASME B18.21.1	100	000000000	0000


						No. 6	0.148"	0.250"	0.031"	—	ASME B18.21.1	1,000	000000000	0000
						No. 8	0.174"	0.293"	0.040"	—	ASME B18.21.1	1,000	000000000	0000
						No. 10	0.200"	0.334"	0.047"	—	ASME B18.21.1	1,000	000000000	00000
		No. 12				0.227"	0.377"	0.056"	—	ASME B18.21.1	1,000	000000000	00000
		1/4"	0.260"			0.487"	0.062"	—	ASME B18.21.1	100	000000000	0000
		1/4"	0.260"			0.487"	0.062"	—	ASME B18.21.1	1,000	000000000	00000
		5/16"	0.322"			0.583"	0.078"	—	ASME B18.21.1	100	000000000	0000
		5/16"	0.322"			0.583"	0.078"	—	ASME B18.21.1	1,000	000000000	00000
		3/8"	0.385"			0.680"	0.094"	—	ASME B18.21.1	100	000000000	0000
		3/8"	0.385"			0.680"	0.094"	—	ASME B18.21.1	1,000	000000000	00000


		7/16"	0.450"			0.776"	0.109"	—	ASME B18.21.1	100	000000000	0000
		1/2"	0.512"			0.869"	0.125"	—	ASME B18.21.1	100	000000000	00000
		1/2"	0.512"			0.869"	0.125"	—	ASME B18.21.1	1,000	000000000	000000
		9/16"	0.574"			0.965"	0.141"	—	ASME B18.21.1	50	000000000	0000
		5/8"	0.641"			1.073"	0.156"	—	ASME B18.21.1	50	000000000	00000
		5/8"	0.641"			1.073"	0.156"	—	ASME B18.21.1	500	000000000	00000
		3/4"	0.766"			1.265"	0.188"	—	ASME B18.21.1	50	000000000	00000
		3/4"	0.766"			1.265"	0.188"	—	ASME B18.21.1	500	000000000	000000
		7/8"	0.894"			1.459"	0.219"	—	ASME B18.21.1	25	000000000	00000
		1"	1.024"			1.656"	0.250"	—	ASME B18.21.1	10	000000000	0000


		1 1/8"	1.153"			1.847"	0.281"	—	ASME B18.21.1	10	000000000	00000
		1 1/4"	1.280"			2.036"	0.312"	—	ASME B18.21.1	10	000000000	00000
		1 1/2"	1.534"			2.419"	0.375"	—	ASME B18.21.1	5	000000000	00000
		1 5/8"	1.663"			2.553"	0.389"	—	ASME B18.21.1	1	000000000	0000
		1 3/4"	1.789"			2.679"	0.389"	—	ASME B18.21.1	1	000000000	0000
		2"	2.039"			2.936"	0.422"	—	ASME B18.21.1	1	000000000	0000
		M2	2.4 mm			4.4 mm	0.4 mm to 0.6 mm	—	DIN 127B	100	000000000	0000
		M2.5	2.9 mm			5.1 mm	0.5 mm to 0.7 mm	—	DIN 127B	100	000000000	0000
M3		3.4 mm	6.2 mm			0.7 mm to 0.9 mm	—	DIN 127B	100	000000000	0000
M3.5	3.9 mm	6.7 mm	0.7 mm to 0.9 mm			—	DIN 127B	100	000000000	0000


M4	4.4 mm	7.6 mm	0.8 mm to 1.0 mm			—	DIN 127B	100	000000000	0000
M5	5.4 mm	9.2 mm	1.1 mm to 1.3 mm			—	DIN 127B	100	000000000	0000
M6	6.5 mm	11.8 mm	1.5 mm to 1.7 mm			—	DIN 127B	100	000000000	0000
M8	8.5 mm	14.8 mm	1.9 mm to 2.1 mm			—	DIN 127B	100	000000000	0000
M10	10.7 mm	18.1 mm	2.0 mm to 2.4 mm			—	DIN 127B	100	000000000	0000
M12	12.7 mm	21.1 mm	2.3 mm to 2.7 mm			—	DIN 127B	100	000000000	0000
M14	14.7 mm	24.1 mm	2.8 mm to 3.2 mm			—	DIN 127B	100	000000000	00000
M16	17.0 mm	27.4 mm	3.3 mm to 3.7 mm			—	DIN 127B	50	000000000	00000
M18	19.0 mm	29.4 mm	3.3 mm to 3.7 mm			—	DIN 127B	50	000000000	00000
M20	21.2 mm	33.6 mm	3.8 mm to 4.2 mm			—	DIN 127B	25	000000000	00000


M24	25.5 mm	40.0 mm	4.8 mm to 5.2 mm			—	DIN 127B	25	000000000	00000
M30	31.7 mm	48.2 mm	5.8 mm to 6.2 mm			—	DIN 127B	5	000000000	00000
M36	37.7 mm	58.2 mm	5.8 mm to 6.2 mm			—	DIN 127B	1	000000000	0000


Corrosion-Resistant Galvanized Steel



		1/4"	0.260"			0.487"	0.062"	—	ASME B18.21.1	100	000000000	0000


		5/16"	0.322"	0.583"	0.078"	—	ASME B18.21.1	100	000000000	0000
		3/8"	0.385"	0.705"	0.094"	—	ASME B18.21.1	100	000000000	0000
		7/16"	0.450"	0.776"	0.109"	—	ASME B18.21.1	25	000000000	0000
		1/2"	0.512"	0.869"	0.125"	—	ASME B18.21.1	50	000000000	0000
		5/8"	0.641"	1.073"	0.156"	—	ASME B18.21.1	25	000000000	0000
		3/4"	0.766"	1.265"	0.188"	—	ASME B18.21.1	25	000000000	00000
		7/8"	0.894"	1.459"	0.219"	—	ASME B18.21.1	10	000000000	0000
		1"	1.024"	1.656"	0.250"	—	ASME B18.21.1	10	000000000	0000
		1 1/4"	1.280"	2.036"	0.312"	—	ASME B18.21.1	5	000000000	00000
		M6	6.5 mm	11.8 mm	1.5 mm to 1.7 mm	—	DIN 127B	50	000000000	0000


		M8	8.5 mm	14.8 mm	1.9 mm to 2.1 mm	—	DIN 127B	50	000000000	00000
		M10	10.7 mm	18.1 mm	2.0 mm to 2.4 mm	—	DIN 127B	50	000000000	00000
		M12	12.7 mm	21.1 mm	2.3 mm to 2.7 mm	—	DIN 127B	25	000000000	0000
		M16	17.0 mm	27.4 mm	3.3 mm to 3.7 mm	—	DIN 127B	10	000000000	0000
		M20	21.2 mm	33.6 mm	3.8 mm to 4.2 mm	—	DIN 127B	1	000000000	0000


		Highly-Corrosion-Resistant Zinc-Flake-Coated Steel



				No. 10	0.200"	0.334"	0.047"	—	ASME B18.21.1	25	00000000	0000


				1/4"	0.260"	0.487"	0.062"	—	ASME B18.21.1	25	00000000	0000
				5/16"	0.322"	0.583"	0.078"	—	ASME B18.21.1	25	00000000	0000
				3/8"	0.385"	0.680"	0.094"	—	ASME B18.21.1	10	00000000	0000
				7/16"	0.450"	0.776"	0.109"	—	ASME B18.21.1	10	00000000	0000
				1/2"	0.512"	0.869"	0.125"	—	ASME B18.21.1	10	00000000	0000
				9/16"	0.574"	0.965"	0.141"	—	ASME B18.21.1	5	00000000	0000
				5/8"	0.641"	1.073"	0.156"	—	ASME B18.21.1	5	00000000	0000
				3/4"	0.766"	1.265"	0.188"	—	ASME B18.21.1	1	00000000	0000
				7/8"	0.894"	1.459"	0.219"	—	ASME B18.21.1	1	00000000	0000
				1"	1.024"	1.656"	0.250"	—	ASME B18.21.1	1	00000000	0000


				1 1/4"	1.280"	2.036"	0.312"	—	ASME B18.21.1	1	00000000	00000
				M6	6.5 mm	11.8 mm	1.5 mm to 1.7 mm	—	DIN 127B	25	000000000	0000
				M8	8.5 mm	14.8 mm	1.9 mm to 2.1 mm	—	DIN 127B	25	000000000	00000
				M10	10.7 mm	18.1 mm	2.0 mm to 2.4 mm	—	DIN 127B	25	000000000	00000


				Aluminum



						No. 6	0.148"	0.250"	0.031"	—	ASME B18.21.1	100	000000000	0000


						No. 8	0.174"	0.293"	0.040"	—	ASME B18.21.1	100	000000000	0000
						No. 10	0.200"	0.334"	0.047"	—	ASME B18.21.1	100	000000000	0000
						1/4"	0.260"	0.487"	0.062"	—	ASME B18.21.1	100	000000000	00000
						5/16"	0.322"	0.583"	0.078"	—	ASME B18.21.1	50	000000000	0000
						3/8"	0.385"	0.680"	0.094"	—	ASME B18.21.1	50	000000000	00000
						1/2"	0.512"	0.869"	0.125"	—	ASME B18.21.1	10	000000000	0000
						5/8"	0.641"	1.073"	0.156"	—	ASME B18.21.1	10	000000000	0000
3/4"						0.766"	1.265"	0.188"	—	ASME B18.21.1	10	000000000	00000


Highly-Corrosion-Resistant Silicon Bronze



						No. 2	0.094"	0.172"	0.020"	—	ASME B18.21.1	100	000000000	0000


						No. 3	0.107"	0.195"	0.025"	—	ASME B18.21.1	100	000000000	0000
						No. 4	0.120"	0.209"	0.025"	—	ASME B18.21.1	100	000000000	0000
						No. 4	0.120"	0.209"	0.025"	—	ASME B18.21.1	1,000	000000000	00000
						No. 6	0.148"	0.250"	0.031"	—	ASME B18.21.1	100	000000000	0000
						No. 6	0.148"	0.250"	0.031"	—	ASME B18.21.1	1,000	000000000	00000
						No. 8	0.174"	0.293"	0.040"	—	ASME B18.21.1	100	000000000	0000
						No. 8	0.174"	0.293"	0.040"	—	ASME B18.21.1	1,000	000000000	00000
						No. 10	0.200"	0.334"	0.047"	—	ASME B18.21.1	100	000000000	0000
						No. 12	0.227"	0.377"	0.056"	—	ASME B18.21.1	100	000000000	0000
						1/4"	0.260"	0.487"	0.062"	—	ASME B18.21.1	100	000000000	00000


						5/16"	0.322"	0.583"	0.078"	—	ASME B18.21.1	50	000000000	00000
						3/8"	0.385"	0.680"	0.094"	—	ASME B18.21.1	25	000000000	00000
						7/16"	0.450"	0.776"	0.109"	—	ASME B18.21.1	10	000000000	0000
						1/2"	0.512"	0.869"	0.125"	—	ASME B18.21.1	10	000000000	0000
						5/8"	0.641"	1.073"	0.156"	—	ASME B18.21.1	5	000000000	0000
		3/4"				0.766"	1.265"	0.188"	—	ASME B18.21.1	5	000000000	00000
		1"	1.024"			1.656"	0.250"	—	ASME B18.21.1	5	000000000	00000
		M3	3.4 mm			6.2 mm	0.7 mm to 0.9 mm	—	DIN 127B	100	000000000	00000
		M4	4.4 mm			7.6 mm	0.8 mm to 1.0 mm	—	DIN 127B	100	000000000	00000
		M5	5.4 mm			9.2 mm	1.1 mm to 1.3 mm	—	DIN 127B	100	000000000	00000


		M6	6.5 mm			11.8 mm	1.5 mm to 1.7 mm	—	DIN 127B	50	000000000	00000
		M8	8.5 mm			14.8 mm	1.9 mm to 2.1 mm	—	DIN 127B	25	000000000	00000
		M10	10.7 mm			18.1 mm	2.0 mm to 2.4 mm	—	DIN 127B	10	000000000	0000


		High-Strength Highly-Corrosion-Resistant K500 Nickel



						1/4"	0.260"	0.487"	0.062" to 0.077"	—	ASME B18.21.1	10	000000000	00000


						5/16"	0.322"	0.583"	0.078" to 0.097"	—	ASME B18.21.1	5	000000000	00000
						3/8"	0.385"	0.680"	0.094" to 0.115"	—	ASME B18.21.1	5	000000000	00000
						1/2"	0.512"	0.869"	0.125" to 0.151"	—	ASME B18.21.1	1	000000000	0000
						5/8"	0.641"	1.073"	0.156" to 0.189"	—	ASME B18.21.1	1	000000000	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	000000000	00000


	3/8"	0.377"	0.680"	0.094"	MS35338-141	ASME B18.21.1	25	000000000	00000
	7/16"	0.440"	0.776"	0.109"	MS35338-142	ASME B18.21.1	10	000000000	0000
	1/2"	0.502"	0.869"	0.125"	MS35338-143	ASME B18.21.1	10	000000000	0000
	9/16"	0.564"	0.965"	0.141"	MS35338-144	ASME B18.21.1	10	000000000	0000
	5/8"	0.628"	1.073"	0.156"	MS35338-145	ASME B18.21.1	10	000000000	00000
	3/4"	0.753"	1.265"	0.188"	MS35338-146	ASME B18.21.1	5	000000000	00000
	1"	1.003"	1.656"	0.250"	MS35338-148	ASME B18.21.1	2	000000000	0000
	1 1/8"	1.129"	1.847"	0.281"	MS35338-149	ASME B18.21.1	1	000000000	0000
	1 1/4"	1.254"	2.036"	0.312"	MS35338-150	ASME B18.21.1	1	000000000	0000


	Black-Oxide 18-8 Stainless Steel



			5/16"	0.314"	0.583"	0.078"	MS35338-140	ASME B18.21.1	50	000000000	0000


			3/8"	0.377"	0.680"	0.094"	MS35338-141	ASME B18.21.1	10	000000000	0000
			7/16"	0.440"	0.776"	0.109"	MS35338-142	ASME B18.21.1	10	000000000	0000
			1/2"	0.502"	0.869"	0.125"	MS35338-143	ASME B18.21.1	10	000000000	0000
			9/16"	0.564"	0.965"	0.141"	MS35338-144	ASME B18.21.1	2	000000000	0000
			5/8"	0.628"	1.073"	0.156"	MS35338-145	ASME B18.21.1	2	000000000	0000


			Highly-Corrosion-Resistant Passivated 316 Stainless Steel



					No. 2	0.088"	0.172"	0.020"	MS35338-134	ASME B18.21.1	100	000000000	0000


					No. 4	0.114"	0.209"	0.025"	MS35338-135	ASME B18.21.1	100	000000000	0000
					No. 6	0.141"	0.250"	0.031"	MS35338-136	ASME B18.21.1	100	000000000	0000
					No. 8	0.167"	0.293"	0.040"	MS35338-137	ASME B18.21.1	100	000000000	0000
					No. 10	0.193"	0.334"	0.047"	MS35338-138	ASME B18.21.1	100	000000000	0000
					1/4"	0.252"	0.487"	0.062"	MS35338-139	ASME B18.21.1	50	000000000	0000
					5/16"	0.314"	0.583"	0.078"	MS35338-140	ASME B18.21.1	10	000000000	0000
					3/8"	0.377"	0.680"	0.094"	MS35338-141	ASME B18.21.1	10	000000000	0000
					1/2"	0.502"	0.869"	0.125"	MS35338-143	ASME B18.21.1	5	000000000	0000
					5/8"	0.628"	1.073"	0.156"	MS35338-145	ASME B18.21.1	3	000000000	0000
					3/4"	0.753"	1.265"	0.188"	MS35338-146	ASME B18.21.1	2	000000000	0000


					Highly-Corrosion-Resistant Black-Oxide 316 Stainless Steel



							No. 2	0.088"	0.172"	0.020"	MS35338-134	ASME B18.21.1	100	000000000	0000


							No. 4	0.114"	0.209"	0.025"	MS35338-135	ASME B18.21.1	100	000000000	0000
							No. 6	0.141"	0.250"	0.031"	MS35338-136	ASME B18.21.1	100	000000000	0000
							No. 8	0.167"	0.293"	0.040"	MS35338-137	ASME B18.21.1	100	000000000	0000
							No. 10	0.193"	0.334"	0.047"	MS35338-138	ASME B18.21.1	100	000000000	0000
							1/4"	0.252"	0.487"	0.062"	MS35338-139	ASME B18.21.1	50	000000000	0000
							3/8"	0.377"	0.680"	0.094"	MS35338-141	ASME B18.21.1	10	000000000	00000
							1/2"	0.502"	0.869"	0.125"	MS35338-143	ASME B18.21.1	5	000000000	00000
3/4"							0.753"	1.265"	0.188"	MS35338-146	ASME B18.21.1	2	000000000	0000


Zinc-Yellow-Chromate-Plated Steel



							No. 2	0.088"	0.172"	0.020"	MS35338-39	ASME B18.21.1	100	000000000	0000


							No. 4	0.114"	0.209"	0.025"	MS35338-40	ASME B18.21.1	100	000000000	0000
							No. 6	0.141"	0.250"	0.031"	MS35338-41	ASME B18.21.1	100	000000000	0000
							No. 8	0.167"	0.293"	0.040"	MS35338-42	ASME B18.21.1	100	000000000	0000
							No. 10	0.193"	0.334"	0.047"	MS35338-43	ASME B18.21.1	100	000000000	0000
							1/4"	0.252"	0.487"	0.062"	MS35338-44	ASME B18.21.1	50	000000000	0000
							5/16"	0.314"	0.583"	0.078"	MS35338-45	ASME B18.21.1	50	000000000	0000
							3/8"	0.377"	0.680"	0.094"	MS35338-46	ASME B18.21.1	25	000000000	0000
							7/16"	0.440"	0.776"	0.109"	MS35338-47	ASME B18.21.1	25	000000000	0000
							1/2"	0.502"	0.869"	0.125"	MS35338-48	ASME B18.21.1	10	000000000	0000
	9/16"						0.564"	0.965"	0.141"	MS35338-49	ASME B18.21.1	10	000000000	0000


	5/8"	0.628"					1.073"	0.156"	MS35338-50	ASME B18.21.1	10	000000000	0000
	3/4"	0.753"					1.265"	0.188"	MS35338-51	ASME B18.21.1	5	000000000	0000
	7/8"	0.878"					1.459"	0.219"	MS35338-52	ASME B18.21.1	5	000000000	0000
	1"	1.003"					1.656"	0.250"	MS35338-53	ASME B18.21.1	3	000000000	0000
	1 1/8"	1.129"					1.847"	0.281"	MS35338-54	ASME B18.21.1	3	000000000	0000
	1 1/4"	1.254"					2.036"	0.312"	MS35338-55	ASME B18.21.1	2	000000000	0000
	1 3/8"	1.379"					2.219"	0.344"	MS35338-56	ASME B18.21.1	2	000000000	0000
	1 1/2"	1.504"					2.419"	0.375"	MS35338-57	ASME B18.21.1	1	000000000	0000


	Corrosion-Resistant Cadmium-Plated Steel



			No. 2	0.088"			0.172"	0.020"	MS35338-39	ASME B18.21.1	50	000000000	0000


			No. 4	0.114"			0.209"	0.025"	MS35338-40	ASME B18.21.1	50	000000000	0000
			No. 6	0.141"			0.250"	0.031"	MS35338-41	ASME B18.21.1	50	000000000	0000
			No. 8	0.167"			0.293"	0.040"	MS35338-42	ASME B18.21.1	50	000000000	0000
			No. 10	0.193"			0.334"	0.047"	MS35338-43	ASME B18.21.1	50	000000000	0000
			1/4"	0.252"			0.487"	0.062"	MS35338-44	ASME B18.21.1	50	000000000	0000
			5/16"	0.314"			0.583"	0.078"	MS35338-45	ASME B18.21.1	50	000000000	0000
			3/8"	0.377"			0.680"	0.094"	MS35338-46	ASME B18.21.1	25	000000000	0000
			7/16"	0.440"			0.776"	0.109"	MS35338-47	ASME B18.21.1	25	000000000	0000
			1/2"	0.502"			0.869"	0.125"	MS35338-48	ASME B18.21.1	10	000000000	0000
			9/16"	0.564"			0.965"	0.141"	MS35338-49	ASME B18.21.1	5	000000000	0000


			5/8"	0.628"			1.073"	0.156"	MS35338-50	ASME B18.21.1	2	000000000	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	000000000	00000


		No. 4	0.120"	0.173"	0.022"	ASME B18.21.1	100	000000000	0000
		No. 5	0.133"	0.202"	0.030"	ASME B18.21.1	100	000000000	0000
		No. 6	0.148"	0.216"	0.030"	ASME B18.21.1	100	000000000	0000
		No. 8	0.174"	0.267"	0.047"	ASME B18.21.1	100	000000000	0000
		No. 10	0.200"	0.294"	0.047"	ASME B18.21.1	100	000000000	0000
		No. 12	0.227"	0.331"	0.078"	—	100	000000000	0000
		1/4"	0.260"	0.363"	0.078"	ASME B18.21.1	100	000000000	0000
		5/16"	0.322"	0.457"	0.093"	ASME B18.21.1	50	000000000	0000
		3/8"	0.385"	0.550"	0.125"	ASME B18.21.1	50	000000000	00000
		7/16"	0.450"	0.644"	0.140"	ASME B18.21.1	50	000000000	00000


		1/2"	0.512"	0.733"	0.172"	ASME B18.21.1	25	000000000	0000
		5/8"	0.641"	0.917"	0.203"	ASME B18.21.1	10	000000000	0000
		3/4"	0.766"	1.105"	0.218"	ASME B18.21.1	10	000000000	00000
		7/8"	0.894"	1.291"	0.234"	ASME B18.21.1	5	000000000	00000
		1"	1.024"	1.478"	0.250"	ASME B18.21.1	1	000000000	0000
		M3	3.4 mm	5.6 mm	0.9 mm to 1.1 mm	DIN 7980	100	000000000	0000
		M3.5	3.9 mm	6.1 mm	0.9 mm to 1.1 mm	DIN 7980	100	000000000	0000
		M4	4.4 mm	7.0 mm	1.1 mm to 1.3 mm	DIN 7980	100	000000000	0000
		M5	5.4 mm	8.8 mm	1.5 mm to 1.7 mm	DIN 7980	100	000000000	0000
		M6	6.5 mm	9.9 mm	1.5 mm to 1.7 mm	DIN 7980	100	000000000	0000


		M8	8.5 mm	12.7 mm	1.9 mm to 2.1 mm	DIN 7980	100	000000000	0000
		M10	10.7 mm	16.0 mm	2.3 mm to 2.7 mm	DIN 7980	100	000000000	00000
		M12	12.7 mm	18.0 mm	2.3 mm to 2.7 mm	DIN 7980	50	000000000	0000
		M14	14.7 mm	21.1 mm	2.8 mm to 3.2 mm	DIN 7980	10	000000000	0000
		M16	17.0 mm	24.4 mm	3.3 mm to 3.7 mm	DIN 7980	10	000000000	0000
		M18	19.0 mm	26.4 mm	3.3 mm to 3.7 mm	DIN 7980	10	000000000	0000
		M20	21.2 mm	30.6 mm	4.3 mm to 4.7 mm	DIN 7980	10	000000000	00000
		M22	23.5 mm	32.9 mm	4.3 mm to 4.7 mm	DIN 7980	5	000000000	00000
		M24	25.5 mm	35.9 mm	4.8 mm to 5.2 mm	DIN 7980	5	000000000	0000
		M30	31.7 mm	44.1 mm	5.8 mm to 6.2 mm	DIN 7980	1	000000000	00000


		Black-Oxide 18-8 Stainless Steel



				No. 4	0.120"	0.173"	0.022"	ASME B18.21.1	100	000000000	00000


				No. 6	0.148"	0.216"	0.030"	ASME B18.21.1	100	000000000	00000
				No. 8	0.174"	0.267"	0.047"	ASME B18.21.1	100	000000000	00000
				No. 10	0.200"	0.294"	0.047"	ASME B18.21.1	50	000000000	0000
				1/4"	0.260"	0.363"	0.078"	ASME B18.21.1	50	000000000	00000
				5/16"	0.322"	0.457"	0.093"	ASME B18.21.1	25	000000000	0000
				3/8"	0.385"	0.550"	0.125"	ASME B18.21.1	10	000000000	0000
				1/2"	0.512"	0.733"	0.172"	ASME B18.21.1	10	000000000	0000
				5/8"	0.641"	0.917"	0.203"	ASME B18.21.1	5	000000000	00000
				3/4"	0.766"	1.105"	0.218"	ASME B18.21.1	1	000000000	0000


				Highly-Corrosion-Resistant 316 Stainless Steel



No. 2						0.094"	0.142"	0.022"	—	100	000000000	0000


No. 4	0.120"					0.173"	0.022"	ASME B18.21.1	100	000000000	0000
No. 5	0.133"					0.202"	0.030"	ASME B18.21.1	100	000000000	0000
No. 6	0.148"					0.216"	0.030"	ASME B18.21.1	100	000000000	0000
No. 8	0.174"					0.267"	0.047"	ASME B18.21.1	100	000000000	0000
No. 10	0.200"					0.294"	0.047"	ASME B18.21.1	100	000000000	0000
1/4"	0.260"					0.363"	0.078"	ASME B18.21.1	100	000000000	0000
5/16"	0.322"					0.457"	0.093"	ASME B18.21.1	50	000000000	0000
3/8"	0.385"					0.550"	0.125"	ASME B18.21.1	50	000000000	00000
7/16"	0.450"					0.644"	0.140"	ASME B18.21.1	25	000000000	00000
1/2"	0.512"					0.733"	0.172"	ASME B18.21.1	10	000000000	0000


5/8"	0.641"					0.917"	0.203"	ASME B18.21.1	10	000000000	00000
3/4"	0.766"					1.105"	0.218"	ASME B18.21.1	5	000000000	0000
7/8"	0.894"					1.291"	0.234"	ASME B18.21.1	1	000000000	0000
1"	1.024"					1.478"	0.250"	ASME B18.21.1	1	000000000	0000
1 1/4"	1.280"					1.790"	0.313"	ASME B18.21.1	1	000000000	0000
1 1/2"	1.534"					2.159"	0.375"	ASME B18.21.1	1	000000000	00000
M3	3.4 mm					5.6 mm	0.9 mm to 1.1 mm	DIN 7980	100	000000000	0000
M4	4.4 mm					7.0 mm	1.1 mm to 1.3 mm	DIN 7980	100	000000000	0000
M5	5.4 mm					8.8 mm	1.5 mm to 1.7 mm	DIN 7980	100	000000000	0000
M6	6.5 mm					9.9 mm	1.5 mm to 1.7 mm	DIN 7980	100	000000000	0000


M8	8.5 mm					12.7 mm	1.9 mm to 2.1 mm	DIN 7980	50	000000000	0000
M10	10.7 mm					16.0 mm	2.3 mm to 2.7 mm	DIN 7980	50	000000000	00000
M12	12.7 mm					18.0 mm	2.3 mm to 2.7 mm	DIN 7980	25	000000000	00000
M14	14.7 mm					21.1 mm	2.8 mm to 3.2 mm	DIN 7980	10	000000000	0000
M16	17.0 mm					24.4 mm	3.3 mm to 3.7 mm	DIN 7980	10	000000000	0000
M18	19.0 mm					26.4 mm	3.3 mm to 3.7 mm	DIN 7980	10	000000000	0000
M20	21.2 mm					30.6 mm	4.3 mm to 4.7 mm	DIN 7980	1	000000000	0000
M22	23.5 mm					32.9 mm	4.3 mm to 4.7 mm	DIN 7980	1	000000000	0000
M24	25.5 mm					35.9 mm	4.8 mm to 5.2 mm	DIN 7980	1	000000000	0000
M30	31.7 mm					44.1 mm	5.8 mm to 6.2 mm	DIN 7980	1	000000000	00000


Zinc-Plated Steel



						No. 6	0.148"	0.216"	0.030"	ASME B18.21.1	50	000000000	0000


		No. 8	0.174"			0.267"	0.042"	ASME B18.21.1	50	000000000	0000
		No. 10	0.200"			0.294"	0.047"	ASME B18.21.1	50	000000000	0000
		1/4"	0.260"			0.363"	0.078"	ASME B18.21.1	50	000000000	0000
		5/16"	0.322"			0.457"	0.093"	ASME B18.21.1	50	000000000	0000
		3/8"	0.385"			0.550"	0.125"	ASME B18.21.1	50	000000000	0000
		7/16"	0.450"			0.644"	0.140"	ASME B18.21.1	25	000000000	00000
		1/2"	0.512"			0.733"	0.172"	ASME B18.21.1	25	000000000	0000
		5/8"	0.641"			0.917"	0.203"	ASME B18.21.1	25	000000000	0000
		3/4"	0.766"			1.105"	0.218"	ASME B18.21.1	10	000000000	0000
		7/8"	0.984"			1.291"	0.234"	ASME B18.21.1	5	000000000	0000


		1"	1.024"			1.478"	0.250"	ASME B18.21.1	1	000000000	00000
		M3	3.4 mm			5.6 mm	0.9 mm to 1.1 mm	DIN 7980	100	000000000	0000
		M4	4.4 mm			7.0 mm	1.1 mm to 1.3 mm	DIN 7980	100	000000000	0000
		M5	5.4 mm			8.8 mm	1.5 mm to 1.7 mm	DIN 7980	100	000000000	0000
		M6	6.5 mm	9.9 mm		1.5 mm to 1.7 mm	DIN 7980	100	000000000	0000
		M8	8.5 mm	12.7 mm	1.9 mm to 2.1 mm	DIN 7980	100	000000000	0000
		M10	10.7 mm	16.0 mm	2.3 mm to 2.7 mm	DIN 7980	100	000000000	00000
		M12	12.7 mm	18.0 mm	2.3 mm to 2.7 mm	DIN 7980	100	000000000	00000
		M14	14.7 mm	21.1 mm	2.8 mm to 3.2 mm	DIN 7980	50	000000000	00000
		M16	17.0 mm	24.4 mm	3.3 mm to 3.7 mm	DIN 7980	25	000000000	0000


		M18	19.0 mm	26.4 mm	3.3 mm to 3.7 mm	DIN 7980	25	000000000	00000
		M20	21.2 mm	30.6 mm	4.3 mm to 4.7 mm	DIN 7980	10	000000000	0000
		M24	25.5 mm	35.9 mm	4.8 mm to 5.2 mm	DIN 7980	10	000000000	0000
		M27	28.5 mm	38.9 mm	4.8 mm to 5.2 mm	DIN 7980	5	000000000	0000
		M30	31.7 mm	44.1 mm	5.8 mm to 6.2 mm	DIN 7980	5	000000000	00000
		M36	37.7 mm	52.2 mm	6.7 mm to 7.3 mm	DIN 7980	1	000000000	0000


		Zinc-Yellow-Chromate-Plated Steel



				M4	4.1 mm	7.0 mm	1.1 mm to 1.3 mm	DIN 7980	100	000000000	0000


				M5	5.1 mm	8.8 mm	1.5 mm to 1.7 mm	DIN 7980	25	000000000	0000
				M6	6.1 mm	9.9 mm	1.5 mm to 1.7 mm	DIN 7980	100	000000000	0000
				M8	8.1 mm	12.7 mm	1.9 mm to 2.1 mm	DIN 7980	100	000000000	0000
				M10	10.2 mm	16.0 mm	2.3 mm to 2.7 mm	DIN 7980	100	000000000	00000
				M12	12.2 mm	18.0 mm	2.3 mm to 2.7 mm	DIN 7980	100	000000000	00000
				M16	16.2 mm	24.4 mm	3.3 mm to 3.7 mm	DIN 7980	25	000000000	00000


				Black-Oxide Steel



						No. 4	0.117"	0.173"	0.022"	ASME B18.21.1	50	000000000	0000


						No. 6	0.145"	0.216"	0.030"	ASME B18.21.1	50	000000000	0000
						No. 8	0.174"	0.267"	0.042"	ASME B18.21.1	50	000000000	0000
						No. 10	0.200"	0.294"	0.047"	ASME B18.21.1	50	000000000	0000
						1/4"	0.260"	0.363"	0.078"	ASME B18.21.1	50	000000000	0000
5/16"						0.322"	0.457"	0.093"	ASME B18.21.1	50	000000000	0000
3/8"	0.385"					0.550"	0.125"	ASME B18.21.1	10	000000000	0000
7/16"	0.450"					0.644"	0.140"	ASME B18.21.1	25	000000000	0000
1/2"	0.512"					0.733"	0.172"	ASME B18.21.1	25	000000000	0000
5/8"	0.641"					0.917"	0.203"	ASME B18.21.1	10	000000000	00000
3/4"	0.766"					1.105"	0.218"	ASME B18.21.1	5	000000000	0000


7/8"	0.984"					1.291"	0.234"	ASME B18.21.1	5	000000000	0000
1"	1.024"					1.478"	0.250"	ASME B18.21.1	1	000000000	0000
1 1/8"	1.153"					1.663"	0.313"	ASME B18.21.1	1	000000000	0000
1 1/4"	1.280"					1.790"	0.313"	ASME B18.21.1	1	000000000	0000
M3	3.4 mm					5.6 mm	0.9 mm to 1.1 mm	DIN 7980	100	000000000	0000
M3.5	3.9 mm					6.1 mm	0.9 mm to 1.1 mm	DIN 7980	100	000000000	0000
M4	4.4 mm					7.0 mm	1.1 mm to 1.3 mm	DIN 7980	100	000000000	0000
M5	5.4 mm					8.8 mm	1.5 mm to 1.7 mm	DIN 7980	100	000000000	0000
M6	6.5 mm					9.9 mm	1.5 mm to 1.7 mm	DIN 7980	100	000000000	0000
M8	8.5 mm					12.7 mm	1.9 mm to 2.1 mm	DIN 7980	100	000000000	0000


M10	10.7 mm					16.0 mm	2.3 mm to 2.7 mm	DIN 7980	100	000000000	00000
M12	12.7 mm					18.0 mm	2.3 mm to 2.7 mm	DIN 7980	100	000000000	00000
M14	14.7 mm					21.1 mm	2.8 mm to 3.2 mm	DIN 7980	100	000000000	00000
M16	17.0 mm					24.4 mm	3.3 mm to 3.7 mm	DIN 7980	50	000000000	00000
M18	19.0 mm					26.4 mm	3.3 mm to 3.7 mm	DIN 7980	25	000000000	0000
M20	21.2 mm					30.6 mm	4.3 mm to 4.7 mm	DIN 7980	25	000000000	00000
M22	23.5 mm					32.9 mm	4.3 mm to 4.7 mm	DIN 7980	10	000000000	0000
M24	25.5 mm					35.9 mm	4.8 mm to 5.2 mm	DIN 7980	10	000000000	00000
M27	28.5 mm					38.9 mm	4.8 mm to 5.2 mm	DIN 7980	5	000000000	0000
M30	31.7 mm					44.1 mm	5.8 mm to 6.2 mm	DIN 7980	5	000000000	00000


M36	37.7 mm					52.2 mm	6.7 mm to 7.3 mm	DIN 7980	1	000000000	0000
M42	43.7 mm					60.2 mm	7.7 mm to 8.3 mm	DIN 7980	1	000000000	00000
M48	50.5 mm					67.0 mm	7.7 mm to 8.3 mm	DIN 7980	1	000000000	00000


Steel



		No. 4	0.120"			0.173"	0.022"	ASME B18.21.1	100	000000000	0000


		No. 5	0.133"			0.202"	0.030"	ASME B18.21.1	100	000000000	0000
		No. 6	0.148"			0.216"	0.030"	ASME B18.21.1	100	000000000	0000
		No. 10	0.200"			0.294"	0.047"	ASME B18.21.1	100	000000000	0000
		1/4"	0.260"			0.363"	0.078"	ASME B18.21.1	100	000000000	0000
		5/16"	0.322"			0.457"	0.093"	ASME B18.21.1	100	000000000	0000
		3/8"	0.385"			0.550"	0.125"	ASME B18.21.1	100	000000000	0000
		7/16"	0.450"			0.644"	0.140"	ASME B18.21.1	100	000000000	00000
		1/2"	0.512"			0.733"	0.172"	ASME B18.21.1	100	000000000	00000
		5/8"	0.641"			0.917"	0.203"	ASME B18.21.1	50	000000000	00000
		3/4"	0.766"			1.105"	0.218"	ASME B18.21.1	25	000000000	0000


		7/8"	0.894"	1.291"	0.234"	ASME B18.21.1	25	000000000	00000
		1"	1.024"	1.478"	0.250"	ASME B18.21.1	10	000000000	0000
		1 1/8"	1.153"	1.663"	0.313"	ASME B18.21.1	5	000000000	00000
		1 1/4"	1.280"	1.790"	0.313"	ASME B18.21.1	10	000000000	00000
		1 1/2"	1.534"	2.159"	0.375"	ASME B18.21.1	5	000000000	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	000000000	00000


	1/2"	0.507"	0.869"	0.125"	ASME B18.21.1	1	000000000	0000
	5/8"	0.634"	1.073"	0.156"	ASME B18.21.1	1	000000000	0000
	3/4"	0.759"	1.265"	0.188"	ASME B18.21.1	1	000000000	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	000000000	00000


	M3	3.1	6.2	0.6	1.1	DIN 128A	100	000000000	0000
	M4	4.1	7.6	0.7	1.2	DIN 128A	100	000000000	0000
	M5	5.1	9.2	0.9	1.5	DIN 128A	100	000000000	00000
	M6	6.1	11.8	1.2	2.0	DIN 128A	100	000000000	00000
	M8	8.1	14.8	1.5	2.5	DIN 128A	50	000000000	0000
	M10	10.2	18.1	1.7	2.9	DIN 128A	50	000000000	00000
	M12	12.2	21.1	2.0	3.4	DIN 128A	50	000000000	00000
	M14	14.2	24.1	2.3	3.9	DIN 128A	25	000000000	00000
	M16	16.2	27.4	2.7	4.5	DIN 128A	20	000000000	00000
	M18	18.2	29.4	2.7	4.5	DIN 128A	10	000000000	00000


	M20	20.2	33.6	3.0	5.1	DIN 128A	10	000000000	00000
	M22	22.5	35.9	3.0	5.1	DIN 128A	5	000000000	00000
	M24	24.5	40.0	3.8	6.5	DIN 128A	5	000000000	00000


	Zinc-Plated Steel



			M2.5	2.6	5.1	0.5	0.9	DIN 128A	100	000000000	00000


			M3	3.1	6.2	0.6	1.1	DIN 128A	100	000000000	0000
			M4	4.1	7.6	0.7	1.2	DIN 128A	100	000000000	0000
			M5	5.1	9.2	0.9	1.5	DIN 128A	100	000000000	0000
			M6	6.1	11.8	1.2	2.0	DIN 128A	100	000000000	00000
			M8	8.1	14.8	1.5	2.5	DIN 128A	100	000000000	00000
			M10	10.2	18.1	1.7	2.9	DIN 128A	100	000000000	00000
			M12	12.2	21.1	2.0	3.4	DIN 128A	50	000000000	00000
			M14	14.2	24.1	2.3	3.9	DIN 128A	25	000000000	00000
			M16	16.2	27.4	2.7	4.5	DIN 128A	25	000000000	00000
			M18	18.2	29.4	2.7	4.5	DIN 128A	10	000000000	0000


			M20	20.2	33.6	3.0	5.1	DIN 128A	10	000000000	00000
			M22	22.5	35.9	3.0	5.1	DIN 128A	10	000000000	00000
			M24	24.5	40.0	3.8	6.5	DIN 128A	10	000000000	00000
			M30	30.5	48.2	5.8	9.5	DIN 128A	1	000000000	0000


			Zinc-Yellow-Chromate-Plated Steel



					M3	3.1	6.2	0.6	1.1	DIN 128A	100	000000000	0000


					M3.5	3.6	6.7	0.6	1.1	DIN 128A	100	000000000	0000
					M4	4.1	7.6	0.7	1.2	DIN 128A	100	000000000	0000
					M5	5.1	9.2	0.9	1.5	DIN 128A	100	000000000	0000
					M6	6.1	11.8	1.2	2	DIN 128A	100	000000000	0000
					M8	8.1	14.8	1.5	2.5	DIN 128A	100	000000000	0000
					M10	10.2	18.1	1.7	2.9	DIN 128A	100	000000000	00000
					M12	12.2	21.1	2.0	3.4	DIN 128A	50	000000000	0000
					M14	14.2	24.1	2.3	3.9	DIN 128A	25	000000000	00000
					M16	16.2	27.4	2.7	4.5	DIN 128A	10	000000000	00000
M20					20.2	33.6	3.0	5.1	DIN 128A	10	000000000	00000


Black-Oxide Steel



					M3	3.1	6.2	0.6	1.1	DIN 128A	100	000000000	0000


					M4	4.1	7.6	0.7	1.2	DIN 128A	100	000000000	0000
					M5	5.1	9.2	0.9	1.5	DIN 128A	100	000000000	0000
					M6	6.1	11.8	1.2	2.0	DIN 128A	50	000000000	0000
					M8	8.1	14.8	1.5	2.5	DIN 128A	50	000000000	0000
					M10	10.2	18.1	1.7	2.9	DIN 128A	25	000000000	00000
					M12	12.2	21.1	2.0	3.4	DIN 128A	10	000000000	0000
					M16	16.2	27.4	2.7	4.5	DIN 128A	10	000000000	0000
					M20	20.2	33.6	3.0	5.1	DIN 128A	5	000000000	0000
					M24	24.5	40.0	3.8	6.5	DIN 128A	5	000000000	00000


					Steel



	M2.5						2.3	4.6	0.6	1.1	DIN 6905	200	000000000	0000


	M3	2.7					5.6	0.7	1.3	DIN 6905	200	000000000	0000
	M4	3.6					7.0	0.8	1.4	DIN 6905	200	000000000	00000
	M5	4.6					8.6	1.0	1.7	DIN 6905	100	000000000	00000
	M6	5.5					11.0	1.3	2.2	DIN 6905	50	000000000	00000
	M8	7.4					14.0	1.6	2.8	DIN 6905	50	000000000	00000
	M10	9.3					17.0	1.8	3.2	DIN 6905	10	000000000	00000
	M12	11.0					19.7	2.1	3.7	DIN 6905	10	000000000	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	000000000	000000


	M5	1	5.4	9.2	0.9	1.7	DIN 128B	25	000000000	0000
	M6	1	6.5	11.8	1.2	2.2	DIN 128B	25	000000000	0000
	M8	1	8.5	14.8	1.5	2.7	DIN 128B	25	000000000	0000
	M10	1	10.7	18.1	1.7	3.1	DIN 128B	25	000000000	00000
	M12	1	12.7	21.1	1.9	3.6	DIN 128B	10	000000000	0000
	M16	1	17.0	27.4	2.6	5.1	DIN 128B	1	000000000	0000


	Zinc-Plated Steel



			M3	1	3.1	6.2	0.6	1.1	DIN 128B	100	000000000	0000


			M4	1	4.1	7.6	0.7	1.2	DIN 128B	100	000000000	0000
			M5	1	5.1	9.2	0.9	1.5	DIN 128B	100	000000000	0000
			M6	1	6.1	11.8	1.2	2.0	DIN 128B	100	000000000	00000
			M8	1	8.1	14.8	1.5	2.5	DIN 128B	100	000000000	00000
			M10	1	10.2	18.1	1.7	2.9	DIN 128B	50	000000000	00000
			M12	1	12.2	21.1	2.0	3.4	DIN 128B	25	000000000	0000
			M14	1	14.2	24.1	2.4	3.9	DIN 128B	25	000000000	00000
			M16	1	16.2	27.4	2.7	4.5	DIN 128B	25	000000000	00000
			M18	1	18.2	29.4	2.7	4.5	DIN 128B	10	000000000	0000
			M22	1	22.5	35.9	3.0	5.1	DIN 128B	5	000000000	0000


			M24	1	24.5	40.0	3.8	6.5	DIN 128B	5	000000000	00000

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	000000000	000000


	755	For M3 to M20 Screw Sizes	DIN 127B	Plastic Box	000000000	000000
	1,350	For No. 4 to 1" Screw Sizes	—	Metal Box	000000000	000000


	Zinc-Plated Steel



			350	For No. 8 to 1/2" Screw Sizes	—	Plastic Box	000000000	00000


			1,350	For No. 4 to 1" Screw Sizes	—	Metal Box	000000000	000000


			Steel



					755	For M3 to M20 Screw Sizes	DIN 127B	Plastic Box	000000000	00000