Stainless Steel Tooth Lock Washers

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Washer Type

Material

400 Series Stainless Steel

410 Stainless Steel

Tooth Location

External

Internal

Internal and External

System of Measurement

Screw Size

Thickness

Performance

Specifications Met

Finish

REACH

RoHS

DFARS Specialty Metals

Compliant

Exempt

Not Compliant

Export Control Classification Number (ECCN)

Hardness

Rockwell C40 to Rockwell C50

Countersink Angle

188 Products

Washer Type

Countersunk

Grip flat- and oval-head screws for a secure hold without overtightening

6 products

Performance

Wear Resistant

Won't lose strength, even on rotating parts with lots of friction

84 products

Certification

Mil. Spec.

Adhere to U.S. military standards for material and construction

27 products

Tooth Lock Washers

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

External Tooth

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

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.

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

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

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



		No. 2	0.086"	0.189"	0.010" to 0.013"	ASME B18.21.1	100	000000000	00000


		No. 4	0.115"	0.260"	0.012" to 0.018"	ASME B18.21.1	100	000000000	0000
		No. 6	0.141"	0.320"	0.016" to 0.022"	ASME B18.21.1	100	000000000	0000
		No. 8	0.168"	0.381"	0.018" to 0.023"	ASME B18.21.1	100	000000000	0000
		No. 10	0.195"	0.410"	0.018" to 0.024"	ASME B18.21.1	100	000000000	0000
		No. 12	0.221"	0.475"	0.020" to 0.027"	ASME B18.21.1	100	000000000	0000
		1/4"	0.256"	0.510"	0.023" to 0.028"	ASME B18.21.1	100	000000000	0000
		5/16"	0.320"	0.610"	0.028" to 0.034"	ASME B18.21.1	50	000000000	0000
		3/8"	0.384"	0.694"	0.032" to 0.040"	ASME B18.21.1	25	000000000	0000
		1/2"	0.513"	0.900"	0.037" to 0.045"	ASME B18.21.1	50	000000000	0000
		5/8"	0.641"	1.070"	0.042" to 0.050"	ASME B18.21.1	10	000000000	0000


		3/4"	0.768"	1.260"	0.047" to 0.055"	ASME B18.21.1	5	000000000	0000
		M2	2.2 mm	4.5 mm	0.2 mm to 0.4 mm	DIN 6797	100	000000000	0000
		M2	2.2 mm	4.5 mm	0.2 mm to 0.4 mm	DIN 6798	100	000000000	0000
		M2.5	2.7 mm	5.5 mm	0.3 mm to 0.5 mm	DIN 6797	100	000000000	0000
		M2.5	2.7 mm	5.5 mm	0.3 mm to 0.5 mm	DIN 6798	100	000000000	0000
		M3	3.2 mm	6.0 mm	0.3 mm to 0.5 mm	DIN 6797	100	000000000	0000
		M3	3.2 mm	6.0 mm	0.3 mm to 0.5 mm	DIN 6798	100	000000000	0000
		M3.5	3.7 mm	7.0 mm	0.4 mm to 0.6 mm	DIN 6797	100	000000000	0000
		M4	4.3 mm	8.0 mm	0.4 mm to 0.6 mm	DIN 6797	100	000000000	0000
		M4	4.3 mm	8.0 mm	0.4 mm to 0.6 mm	DIN 6798	100	000000000	0000


		M5	5.3 mm	10.0 mm	0.5 mm to 0.7 mm	DIN 6797	100	000000000	0000
		M5	5.3 mm	10.0 mm	0.5 mm to 0.7 mm	DIN 6798	100	000000000	0000
		M6	6.4 mm	11.0 mm	0.6 mm to 0.8 mm	DIN 6797	100	000000000	0000
		M6	6.4 mm	11.0 mm	0.6 mm to 0.8 mm	DIN 6798	100	000000000	0000
		M7	7.4 mm	12.5 mm	0.7 mm to 0.9 mm	DIN 6797	100	000000000	0000
		M8	8.4 mm	15.0 mm	0.7 mm to 0.9 mm	DIN 6797	100	000000000	0000
		M8	8.4 mm	15.0 mm	0.7 mm to 0.9 mm	DIN 6798	100	000000000	0000
		M10	10.5 mm	18.0 mm	0.8 mm to 1.0 mm	DIN 6797	100	000000000	0000
		M10	10.5 mm	18.0 mm	0.8 mm to 1.0 mm	DIN 6798	100	000000000	00000
		M12	13.0 mm	20.5 mm	0.9 mm to 1.2 mm	DIN 6797	50	000000000	0000


		M12	13.0 mm	20.5 mm	0.9 mm to 1.2 mm	DIN 6798	50	000000000	0000
		M14	15.0 mm	24.0 mm	0.9 mm to 1.2 mm	DIN 6797	50	000000000	0000
		M16	17.0 mm	26.0 mm	1.0 mm to 1.4 mm	DIN 6797	50	000000000	00000
		M16	17.0 mm	26.0 mm	1.0 mm to 1.4 mm	DIN 6798	50	000000000	0000
		M18	19.0 mm	30.0 mm	1.2 mm to 1.6 mm	DIN 6797	10	000000000	0000
		M20	21.0 mm	33.0 mm	1.2 mm to 1.5 mm	DIN 6798	10	000000000	0000
		M20	21.0 mm	33.0 mm	1.2 mm to 1.6 mm	DIN 6797	10	000000000	0000
		M22	23.0 mm	36.0 mm	1.3 mm to 1.7 mm	DIN 6797	10	000000000	0000
		M24	25.0 mm	38.0 mm	1.3 mm to 1.7 mm	DIN 6797	10	000000000	00000
		M24	25.0 mm	38.0 mm	1.4 mm to 1.6 mm	DIN 6798	10	000000000	0000


		M30	31.0 mm	48.0 mm	1.4 mm to 1.8 mm	DIN 6797	10	000000000	00000


		Black-Oxide 18-8 Stainless Steel



				No. 6	0.141"	0.320"	0.016" to 0.022"	ASME B18.21.1	100	000000000	0000


No. 8				0.168"	0.381"	0.018" to 0.023"	ASME B18.21.1	100	000000000	0000
No. 10	0.195"			0.410"	0.018" to 0.024"	ASME B18.21.1	100	000000000	0000
1/4"	0.256"			0.510"	0.023" to 0.028"	ASME B18.21.1	100	000000000	0000
5/16"	0.320"			0.610"	0.028" to 0.034"	ASME B18.21.1	100	000000000	0000
3/8"	0.384"			0.694"	0.032" to 0.040"	ASME B18.21.1	100	000000000	00000


Highly-Corrosion-Resistant 316 Stainless Steel



				No. 4	0.115"	0.260"	0.012" to 0.018"	ASME B18.21.1	10	000000000	0000


				No. 6	0.141"	0.320"	0.016" to 0.022"	ASME B18.21.1	10	000000000	0000
				No. 8	0.168"	0.381"	0.018" to 0.023"	ASME B18.21.1	10	000000000	0000
				No. 10	0.195"	0.410"	0.018" to 0.024"	ASME B18.21.1	10	000000000	0000
				1/4"	0.256"	0.510"	0.023" to 0.028"	ASME B18.21.1	25	000000000	0000
				5/16"	0.320"	0.610"	0.028" to 0.034"	ASME B18.21.1	25	000000000	0000
				3/8"	0.384"	0.694"	0.032" to 0.040"	ASME B18.21.1	10	000000000	0000
				1/2"	0.513"	0.900"	0.037" to 0.045"	ASME B18.21.1	10	000000000	0000
				M3	3.2 mm	6.0 mm	0.3 mm to 0.5 mm	DIN 6797	5	000000000	0000
				M4	4.3 mm	8.0 mm	0.4 mm to 0.6 mm	DIN 6797	5	000000000	0000
				M5	5.3 mm	10.0 mm	0.5 mm to 0.7 mm	DIN 6797	5	000000000	0000


				M6	6.4 mm	11.0 mm	0.6 mm to 0.8 mm	DIN 6797	5	000000000	0000
				M8	8.4 mm	15.0 mm	0.7 mm to 0.9 mm	DIN 6797	5	000000000	0000
				M10	10.5 mm	18.0 mm	0.8 mm to 1.0 mm	DIN 6797	1	000000000	0000
				M12	13.0 mm	20.5 mm	0.9 mm to 1.2 mm	DIN 6797	1	000000000	0000
				M14	15.0 mm	24.0 mm	0.9 mm to 1.2 mm	DIN 6797	1	000000000	0000
				M16	17.3 mm	26.0 mm	1.0 mm to 1.4 mm	DIN 6797	1	000000000	0000
				M20	21.0 mm	33.0 mm	1.2 mm to 1.6 mm	DIN 6797	1	000000000	0000


				Wear-Resistant 400 Series Stainless Steel



						No. 2	0.096"	0.195"	0.010" to 0.016"	—	100	000000000	0000


						No. 3	0.102"	0.235"	0.010" to 0.016"	ASME B18.21.1	100	000000000	0000
						No. 4	0.115"	0.260"	0.012" to 0.018"	ASME B18.21.1	100	000000000	0000
						No. 5	0.129"	0.285"	0.014" to 0.020"	ASME B18.21.1	100	000000000	0000
						No. 6	0.141"	0.320"	0.016" to 0.022"	ASME B18.21.1	100	000000000	0000
						No. 8	0.168"	0.381"	0.018" to 0.023"	ASME B18.21.1	100	000000000	0000
						No. 10	0.195"	0.410"	0.018" to 0.024"	ASME B18.21.1	100	000000000	0000
						No. 12	0.221"	0.475"	0.020" to 0.027"	ASME B18.21.1	100	000000000	0000
						1/4"	0.256"	0.510"	0.023" to 0.028"	ASME B18.21.1	100	000000000	0000
						5/16"	0.320"	0.610"	0.028" to 0.034"	ASME B18.21.1	100	000000000	0000
						3/8"	0.384"	0.694"	0.032" to 0.040"	ASME B18.21.1	50	000000000	0000


						7/16"	0.448"	0.760"	0.032" to 0.040"	ASME B18.21.1	50	000000000	0000
						1/2"	0.513"	0.900"	0.037" to 0.045"	ASME B18.21.1	25	000000000	0000
						9/16"	0.576"	0.985"	0.037" to 0.045"	ASME B18.21.1	25	000000000	0000
						5/8"	0.641"	1.070"	0.042" to 0.050"	ASME B18.21.1	25	000000000	0000
						3/4"	0.768"	1.260"	0.047" to 0.055"	ASME B18.21.1	25	000000000	00000
		7/8"				0.897"	1.410"	0.052" to 0.060"	ASME B18.21.1	5	000000000	0000
		1"	1.025"			1.620"	0.059" to 0.067"	ASME B18.21.1	5	000000000	0000

Internal Tooth

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

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

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



		No. 4	0.115"	0.270"	0.012" to 0.018"	ASME B18.21.1	100	000000000	00000


		No. 6	0.141"	0.295"	0.016" to 0.022"	ASME B18.21.1	100	000000000	0000
		No. 8	0.168"	0.340"	0.018" to 0.023"	ASME B18.21.1	100	000000000	0000
		No. 10	0.195"	0.381"	0.018" to 0.024"	ASME B18.21.1	100	000000000	0000
		No. 12	0.231"	0.410"	0.020" to 0.027"	ASME B18.21.1	100	000000000	0000
		1/4"	0.256"	0.478"	0.023" to 0.028"	ASME B18.21.1	100	000000000	0000
		5/16"	0.320"	0.610"	0.028" to 0.034"	ASME B18.21.1	50	000000000	0000
		3/8"	0.384"	0.692"	0.032" to 0.040"	ASME B18.21.1	25	000000000	0000
		1/2"	0.512"	0.900"	0.037" to 0.045"	ASME B18.21.1	10	000000000	0000
		9/16"	0.576"	0.985"	0.037" to 0.045"	ASME B18.21.1	10	000000000	0000
		5/8"	0.640"	1.071"	0.042" to 0.050"	ASME B18.21.1	10	000000000	0000


		3/4"	0.769"	1.245"	0.047" to 0.055"	ASME B18.21.1	5	000000000	0000
		M2	2.2 mm	4.5 mm	0.2 mm to 0.4 mm	DIN 6797	100	000000000	0000
		M2.3	2.5 mm	5.0 mm	0.2 mm to 0.4 mm	DIN 6797	100	000000000	0000
		M2.5	2.7 mm	5.5 mm	0.2 mm to 0.5 mm	DIN 6797	100	000000000	0000
		M3	3.2 mm	6.0 mm	0.3 mm to 0.5 mm	DIN 6797	100	000000000	0000
		M3.5	3.7 mm	7.0 mm	0.4 mm to 0.6 mm	DIN 6797	100	000000000	0000
		M4	4.3 mm	8.0 mm	0.4 mm to 0.6 mm	DIN 6797	100	000000000	0000
		M5	5.3 mm	10.0 mm	0.5 mm to 0.7 mm	DIN 6797	100	000000000	0000
		M6	6.4 mm	11.0 mm	0.6 mm to 0.8 mm	DIN 6797	100	000000000	0000
		M7	7.4 mm	12.5 mm	0.7 mm to 0.9 mm	DIN 6797	50	000000000	00000


		M8	8.4 mm	15.0 mm	0.7 mm to 0.9 mm	DIN 6797	100	000000000	0000
		M10	10.5 mm	18.0 mm	0.8 mm to 1.0 mm	DIN 6797	50	000000000	0000
		M12	13.0 mm	20.5 mm	0.9 mm to 1.2 mm	DIN 6797	50	000000000	0000
		M14	15.0 mm	24.0 mm	0.9 mm to 1.2 mm	DIN 6797	25	000000000	0000
		M16	17.0 mm	26.0 mm	1.0 mm to 1.4 mm	DIN 6797	25	000000000	0000
		M18	19.0 mm	30.0 mm	1.2 mm to 1.5 mm	DIN 6797	10	000000000	0000
		M20	21.0 mm	33.0 mm	1.2 mm to 1.5 mm	DIN 6797	10	000000000	0000
		M22	23.0 mm	36.0 mm	1.3 mm to 1.6 mm	DIN 6797	10	000000000	0000
		M24	25.0 mm	38.0 mm	1.3 mm to 1.6 mm	DIN 6797	10	000000000	00000


		Highly-Corrosion-Resistant 316 Stainless Steel



				No. 4	0.115"	0.270"	0.012" to 0.018"	ASME B18.21.1	5	000000000	0000


				No. 6	0.141"	0.295"	0.016" to 0.022"	ASME B18.21.1	5	000000000	0000
				No. 8	0.168"	0.340"	0.018" to 0.023"	ASME B18.21.1	5	000000000	0000
				No. 10	0.195"	0.381"	0.018" to 0.024"	ASME B18.21.1	5	000000000	0000
				1/4"	0.256"	0.478"	0.023" to 0.028"	ASME B18.21.1	5	000000000	0000
				5/16"	0.320"	0.610"	0.028" to 0.034"	ASME B18.21.1	5	000000000	0000
				3/8"	0.384"	0.692"	0.032" to 0.040"	ASME B18.21.1	5	000000000	0000
				1/2"	0.530"	0.867"	0.037" to 0.045"	ASME B18.21.1	5	000000000	0000


				Wear-Resistant 400 Series Stainless Steel



						No. 2	0.089"	0.200"	0.010" to 0.016"	ASME B18.21.1	100	000000000	0000


No. 2						0.095"	0.200"	0.010" to 0.016"	ASME B18.21.1	1,000	000000000	00000
No. 3	0.102"					0.232"	0.010" to 0.016"	ASME B18.21.1	100	000000000	0000
No. 4	0.115"					0.270"	0.012" to 0.018"	ASME B18.21.1	100	000000000	0000
No. 4	0.123"					0.270"	0.012" to 0.018"	ASME B18.21.1	1,000	000000000	00000
No. 5	0.136"					0.280"	0.014" to 0.020"	ASME B18.21.1	100	000000000	0000
No. 5	0.136"					0.280"	0.014" to 0.020"	ASME B18.21.1	1,000	000000000	00000
No. 6	0.141"					0.295"	0.016" to 0.022"	ASME B18.21.1	100	000000000	0000
No. 6	0.150"					0.295"	0.016" to 0.022"	ASME B18.21.1	1,000	000000000	00000
No. 8	0.168"					0.340"	0.018" to 0.023"	ASME B18.21.1	100	000000000	0000
No. 9	0.176"					0.340"	0.018" to 0.023"	ASME B18.21.1	1,000	000000000	00000


No. 10	0.195"					0.381"	0.018" to 0.024"	ASME B18.21.1	100	000000000	0000
No. 10	0.204"					0.381"	0.018" to 0.024"	ASME B18.21.1	1,000	000000000	00000
No. 12	0.221"					0.410"	0.020" to 0.027"	ASME B18.21.1	100	000000000	0000
1/4"	0.256"					0.478"	0.023" to 0.028"	ASME B18.21.1	100	000000000	0000
1/4"	0.267"					0.478"	0.023" to 0.028"	ASME B18.21.1	1,000	000000000	00000
5/16"	0.320"					0.610"	0.028" to 0.034"	ASME B18.21.1	100	000000000	0000
3/8"	0.384"					0.692"	0.032" to 0.040"	ASME B18.21.1	100	000000000	0000
7/16"	0.448"					0.789"	0.032" to 0.040"	ASME B18.21.1	100	000000000	00000
1/2"	0.512"					0.900"	0.037" to 0.045"	ASME B18.21.1	50	000000000	0000
9/16"	0.576"					0.985"	0.037" to 0.045"	ASME B18.21.1	50	000000000	00000


5/8"	0.640"					1.071"	0.042" to 0.050"	ASME B18.21.1	25	000000000	00000
3/4"	0.769"					1.245"	0.047" to 0.055"	ASME B18.21.1	25	000000000	00000
7/8"	0.927"					1.410"	0.052" to 0.060"	ASME B18.21.1	5	000000000	0000
1"	1.060"					1.640"	0.059" to 0.067"	ASME B18.21.1	5	000000000	0000

Internal and External Tooth

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

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

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



	No. 4	0.115"	0.475"	0.016" to 0.021"	ASME B18.21.1	100	000000000	00000


	No. 6	0.141"	0.510"	0.023" to 0.028"	ASME B18.21.1	100	000000000	0000
	No. 8	0.168"	0.610"	0.028" to 0.034"	ASME B18.21.1	100	000000000	0000
	No. 10	0.195"	0.610"	0.028" to 0.034"	ASME B18.21.1	100	000000000	0000
	1/4"	0.256"	0.760"	0.032" to 0.040"	ASME B18.21.1	50	000000000	0000
	5/16"	0.320"	0.900"	0.032" to 0.040"	ASME B18.21.1	50	000000000	0000
	3/8"	0.384"	0.985"	0.037" to 0.045"	ASME B18.21.1	25	000000000	0000
	1/2"	0.512"	1.260"	0.047" to 0.055"	ASME B18.21.1	10	000000000	0000

Mil. Spec. Tooth Lock Washers

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

External Tooth

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



	No. 4	0.115"	0.260"	0.015" to 0.019"	MS35335-57	ASME B18.21.1	25	000000000	000000


	No. 6	0.141"	0.320"	0.016" to 0.022"	MS35335-58	ASME B18.21.1	25	000000000	00000
	No. 8	0.168"	0.381"	0.018" to 0.023"	MS35335-59	ASME B18.21.1	25	000000000	00000
	No. 10	0.195"	0.410"	0.020" to 0.025"	MS35335-60	ASME B18.21.1	25	000000000	00000
	1/4"	0.256"	0.510"	0.023" to 0.028"	MS35335-61	ASME B18.21.1	25	000000000	00000
	5/16"	0.320"	0.610"	0.028" to 0.034"	MS35335-62	ASME B18.21.1	25	000000000	00000
	3/8"	0.384"	0.694"	0.032" to 0.040"	MS35335-63	ASME B18.21.1	25	000000000	00000
	7/16"	0.448"	0.760"	0.032" to 0.040"	MS35335-64	ASME B18.21.1	25	000000000	00000
	1/2"	0.513"	0.900"	0.037" to 0.045"	MS35335-65	ASME B18.21.1	10	000000000	0000
	9/16"	0.576"	0.985"	0.037" to 0.045"	MS35335-66	ASME B18.21.1	10	000000000	0000
	5/8"	0.641"	1.070"	0.042" to 0.050"	MS35335-67	ASME B18.21.1	5	000000000	0000


	3/4"	0.768"	1.260"	0.047" to 0.055"	MS35335-68	ASME B18.21.1	5	000000000	0000
	7/8"	0.897"	1.410"	0.052" to 0.060"	MS35335-69	ASME B18.21.1	1	000000000	0000
	1"	1.025"	1.620"	0.059" to 0.067"	MS35335-70	ASME B18.21.1	1	000000000	0000

Internal Tooth

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



	No. 2	0.089"	0.200"	0.010" to 0.015"	MS35333-69	ASME B18.21.1, NASM35333	25	000000000	00000


	No. 4	0.115"	0.270"	0.015" to 0.019"	MS35333-70	ASME B18.21.1, NASM35333	25	000000000	00000
	No. 6	0.141"	0.295"	0.017" to 0.021"	MS35333-71	ASME B18.21.1, NASM35333	25	000000000	00000
	No. 8	0.168"	0.340"	0.018" to 0.023"	MS35333-72	ASME B18.21.1, NASM35333	25	000000000	00000
	No. 10	0.195"	0.381"	0.020" to 0.025"	MS35333-73	ASME B18.21.1, NASM35333	25	000000000	00000
	1/4"	0.256"	0.478"	0.023" to 0.028"	MS35333-74	ASME B18.21.1, NASM35333	25	000000000	00000
	5/16"	0.332"	0.610"	0.028" to 0.034"	MS35333-75	ASME B18.21.1, NASM35333	25	000000000	0000
	3/8"	0.384"	0.692"	0.032" to 0.040"	MS35333-76	ASME B18.21.1, NASM35333	25	000000000	00000
	7/16"	0.448"	0.789"	0.032" to 0.040"	MS35333-77	ASME B18.21.1, NASM35333	25	000000000	00000
	1/2"	0.512"	0.900"	0.037" to 0.045"	MS35333-78	ASME B18.21.1, NASM35333	10	000000000	00000
	5/8"	0.640"	1.071"	0.042" to 0.050"	MS35333-80	ASME B18.21.1, NASM35333	10	000000000	00000


	3/4"	0.769"	1.245"	0.047" to 0.055"	MS35333-81	ASME B18.21.1, NASM35333	5	000000000	00000
	7/8"	0.894"	1.410"	0.052" to 0.060"	MS35333-82	ASME B18.21.1, NASM35333	5	000000000	00000

Countersunk Tooth Lock Washers

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

External Tooth

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

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



	No. 6	0.140"	0.289"	0.017" to 0.021"	82°	ASME B18.21.1	100	000000000	00000


	No. 8	0.167"	0.322"	0.017" to 0.021"	82°	ASME B18.21.1	100	000000000	0000
	No. 10	0.195"	0.354"	0.020" to 0.025"	82°	ASME B18.21.1	25	000000000	0000
	No. 12	0.220"	0.421"	0.020" to 0.025"	82°	ASME B18.21.1	50	000000000	0000
	1/4"	0.255"	0.454"	0.020" to 0.025"	82°	ASME B18.21.1	25	000000000	0000
	5/16"	0.318"	0.599"	0.023" to 0.028"	82°	ASME B18.21.1	25	000000000	0000