Steel Countersunk Washers

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Countersunk

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144 Products

Finishing Washers

Flat and oval head screws sit flush within these washers for a neat, finished appearance.

Flanged Finishing Washers

18-8 Stainless Steel—18-8 stainless steel washers have good chemical resistance and may be mildly magnetic.

	ID	OD	Overall Ht.	Countersink Angle	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	No. 6	0.180"	0.500"	0.110"	82°	100	90333A007	00000


	No. 8	0.210"	0.609"	0.125"	82°	100	90333A009	0000
	No. 10	0.250"	0.703"	0.125"	82°	100	90333A011	0000

Other Finishing Washers

Image of Product. Front orientation. Finishing Washers.

18-8 Stainless Steel—18-8 stainless steel washers have good chemical resistance and may be mildly magnetic.

316 Stainless Steel—316 stainless steel washers have excellent resistance to chemicals and salt water. They may be mildly magnetic.

Nickel-Plated Steel—Nickel-plated steel washers have excellent corrosion resistance and a decorative finish.

Zinc-Plated Steel and Chrome-Plated Steel—Zinc- and chrome-plated steel washers are corrosion resistant in wet environments.

	For Screw Size	ID	OD	Overall Ht.	Countersink Angle	Pkg. Qty.		Pkg.
18-8 Stainless Steel



		No. 4	0.150"	0.375"	0.110"	82°	100	98466A005	00000


		No. 6	0.180"	0.438"	0.110"	82°	100	98466A007	0000
		No. 8	0.210"	0.531"	0.130"	82°	100	98466A009	0000
		No. 10	0.250"	0.594"	0.130"	82°	100	98466A011	0000
		No. 12	0.280"	0.688"	0.160"	82°	100	98466A013	0000
		1/4"	0.320"	0.781"	0.180"	82°	100	98466A029	0000
		5/16"	0.380"	0.891"	0.180"	82°	50	98466A030	0000
		3/8"	0.445"	1.125"	0.250"	82°	50	98466A411	0000
		M2.5	2.7 mm	9.0 mm	1.6 mm	90°	10	98472A111	00000
		M3	3.2 mm	10.0 mm	1.8 mm	90°	10	98472A200	0000
		M4	4.3 mm	14.0 mm	2.3 mm	90°	10	98472A250	00000


		M5	5.3 mm	16.0 mm	2.8 mm	90°	5	98472A300	0000
		M6	6.4 mm	18.0 mm	3.3 mm	90°	5	98472A350	0000
		M8	8.4 mm	25.0 mm	4.8 mm	90°	1	98472A112	0000
		M10	10.5 mm	30.0 mm	6.5 mm	90°	1	98472A113	0000


		316 Stainless Steel



				No. 4	0.140"	0.390"	0.110"	82°	50	94695A170	0000


				No. 6	0.180"	0.438"	0.110"	82°	50	94695A190	0000
				No. 8	0.210"	0.531"	0.130"	82°	50	94695A210	0000
				No. 10	0.250"	0.593"	0.130"	82°	50	94695A230	0000
				No. 12	0.280"	0.688"	0.160"	82°	25	94695A250	0000
				1/4"	0.320"	0.781"	0.180"	82°	25	94695A270	0000


				Nickel-Plated Steel



						No. 4	0.125"	0.375"	0.103"	82°	100	90068A005	0000


						No. 6	0.160"	0.469"	0.102"	82°	100	90068A007	0000
						No. 8	0.180"	0.531"	0.120"	82°	100	90068A009	0000
						No. 10	0.235"	0.594"	0.122"	82°	100	90068A011	0000
						No. 12	0.259"	0.656"	0.156"	82°	100	90068A013	0000
						1/4"	0.305"	0.781"	0.160"	82°	100	90068A029	00000
						5/16"	0.391"	0.906"	0.188"	82°	50	90068A038	00000
						3/8"	0.500"	1.000"	0.260"	82°	25	90068A045	0000
						M3	3.2 mm	10.0 mm	1.8 mm	90°	5	92355A140	0000
						M5	5.3 mm	16.0 mm	2.8 mm	90°	5	92355A110	00000
						M6	6.4 mm	18.0 mm	3.3 mm	90°	5	92355A120	00000


						M8	8.4 mm	25.0 mm	4.8 mm	90°	5	92355A130	00000


						Zinc-Plated Steel



M2.5								2.7 mm	9.0 mm	1.6 mm	90°	25	98424A100	00000


M3	3.2 mm							10.0 mm	1.8 mm	90°	25	98424A200	0000
M4	4.3 mm							14.0 mm	2.3 mm	90°	25	98424A250	00000
M5	5.3 mm							16.0 mm	2.8 mm	90°	25	98424A300	00000
M6	6.4 mm							18.0 mm	3.3 mm	90°	10	98424A350	0000
M8	8.4 mm							25.0 mm	4.8 mm	90°	5	98424A400	0000
M10	10.5 mm							30.0 mm	6.5 mm	90°	1	98424A111	0000


Chrome-Plated Steel



								M2.5	2.7 mm	9.0 mm	1.6 mm	90°	1	97280A117	0000


								M3	3.2 mm	10.0 mm	1.8 mm	90°	1	97280A118	0000
								M4	4.3 mm	14.0 mm	2.3 mm	90°	1	97280A119	0000
								M5	5.3 mm	16.0 mm	2.8 mm	90°	1	97280A121	0000
								M6	6.4 mm	18.0 mm	3.3 mm	90°	1	97280A122	0000
								M8	8.4 mm	25.0 mm	4.8 mm	90°	1	97280A123	0000

Heavy Duty Finishing Washers

Also known as dress washers, these are machined to be sturdier and provide a neater appearance than standard finishing washers. Flat and oval head screws sit flush within them.

18-8 Stainless Steel—18-8 stainless steel washers have good chemical resistance and may be mildly magnetic.

316 Stainless Steel—316 stainless steel washers have excellent resistance to chemicals and salt water. They may be mildly magnetic.

Black-Oxide Steel—Black-oxide steel washers are mildly corrosion resistant in dry environments.

	For Screw Size	ID	OD	Thk.	Countersink Angle	Pkg. Qty.		Pkg.
18-8 Stainless Steel



		No. 4	0.125"	0.438"	0.084" to 0.104"	82°	1	92538A127	00000


		No. 4	0.125"	0.438"	0.084" to 0.104"	100°	1	92538A352	0000
		No. 5	0.140"	0.500"	0.084" to 0.104"	100°	1	92538A356	0000
		No. 5	0.140"	0.500"	0.094" to 0.114"	82°	1	92538A183	0000
		No. 6	0.156"	0.562"	0.084" to 0.104"	100°	1	92538A392	0000
		No. 6	0.156"	0.562"	0.097" to 0.117"	82°	1	92538A255	0000
		No. 8	0.188"	0.750"	0.115" to 0.135"	82°	1	92538A330	0000
		No. 8	0.188"	0.750"	0.115" to 0.135"	100°	1	92538A509	0000
		No. 10	0.203"	0.812"	0.130" to 0.151"	82°	1	92538A340	0000
		No. 10	0.203"	0.812"	0.130" to 0.151"	100°	1	92538A553	0000
		1/4"	0.281"	1.250"	0.271" to 0.291"	82°	1	92538A355	00000


		1/4"	0.281"	1.250"	0.271" to 0.291"	100°	1	92538A841	00000
		5/16"	0.344"	1.250"	0.198" to 0.218"	82°	1	92538A271	00000
		M3	3.2 mm	12.0 mm	2.2 mm to 2.8 mm	90°	1	92538A171	0000
		M3	3.2 mm	12.0 mm	2.2 mm to 2.8 mm	100°	1	92538A461	0000
		M4	4.3 mm	16.0 mm	2.7 mm to 3.3 mm	90°	1	92538A440	0000
		M4	4.3 mm	16.0 mm	2.7 mm to 3.3 mm	100°	1	92538A464	0000
		M5	5.3 mm	22.0 mm	3.2 mm to 3.8 mm	90°	1	92538A450	0000
		M5	5.3 mm	22.0 mm	3.2 mm to 3.8 mm	100°	1	92538A508	0000
		M6	6.4 mm	32.0 mm	3.7 mm to 4.3 mm	90°	1	92538A465	00000
		M6	6.4 mm	32.0 mm	3.7 mm to 4.3 mm	100°	1	92538A870	00000


		M8	8.4 mm	32.0 mm	4.5 mm to 5.1 mm	90°	1	92538A326	00000


		316 Stainless Steel



				No. 4	0.125"	0.438"	0.084" to 0.104"	82°	1	3118N11	0000


				No. 5	0.140"	0.500"	0.094" to 0.114"	82°	1	3118N12	0000
				No. 6	0.156"	0.562"	0.097" to 0.117"	82°	1	3118N13	0000
				No. 8	0.188"	0.750"	0.115" to 0.135"	82°	1	3118N14	0000
				No. 10	0.203"	0.812"	0.130" to 0.151"	82°	1	3118N15	0000
				1/4"	0.281"	1.250"	0.271" to 0.291"	82°	1	3118N16	00000
				5/16"	0.344"	1.250"	0.198" to 0.218"	82°	1	3118N17	00000
				M3	3.2 mm	12.0 mm	2.2 mm to 2.8 mm	90°	1	3127N11	0000
				M3	3.2 mm	12.0 mm	2.2 mm to 2.8 mm	100°	1	3127N16	0000
				M4	4.3 mm	16.0 mm	2.7 mm to 3.3 mm	90°	1	3127N12	0000
				M4	4.3 mm	16.0 mm	2.7 mm to 3.3 mm	100°	1	3127N17	0000


				M5	5.3 mm	22.0 mm	3.2 mm to 3.8 mm	90°	1	3127N13	0000
				M5	5.3 mm	22.0 mm	3.2 mm to 3.8 mm	100°	1	3127N18	00000
				M6	6.4 mm	32.0 mm	3.7 mm to 4.3 mm	90°	1	3127N14	00000
				M6	6.4 mm	32.0 mm	3.7 mm to 4.3 mm	100°	1	3127N19	00000
				M8	8.4 mm	32.0 mm	4.5 mm to 5.1 mm	90°	1	3127N15	00000


				Black-Oxide Steel



						No. 4	0.125"	0.438"	0.084" to 0.104"	82°	5	92908A127	0000


No. 4	0.125"					0.438"	0.084" to 0.104"	100°	5	92908A313	00000
No. 5	0.140"					0.500"	0.084" to 0.104"	100°	5	92908A332	00000
No. 5	0.140"					0.500"	0.094" to 0.114"	82°	5	92908A128	00000
No. 6	0.156"					0.562"	0.084" to 0.104"	100°	5	92908A339	00000
No. 6	0.156"					0.562"	0.097" to 0.117"	82°	5	92908A195	00000
No. 8	0.188"					0.750"	0.115" to 0.135"	82°	5	92908A130	0000
No. 8	0.188"					0.750"	0.115" to 0.135"	100°	5	92908A356	00000
No. 8	0.188"					1.000"	0.115" to 0.135"	82°	5	92908A135	00000
No. 10	0.203"					0.812"	0.130" to 0.151"	82°	5	92908A140	00000
No. 10	0.203"					0.812"	0.130" to 0.151"	100°	1	92908A414	0000


No. 10	0.203"					1.250"	0.130" to 0.151"	82°	1	92908A150	0000
No. 10	0.203"					1.250"	0.130" to 0.151"	100°	1	92908A489	0000
1/4"	0.281"					1.250"	0.271" to 0.291"	82°	1	92908A155	0000
1/4"	0.281"					1.250"	0.271" to 0.291"	100°	1	92908A666	0000
1/4"	0.281"					2.000"	0.271" to 0.291"	82°	1	92908A175	00000
5/16"	0.344"					1.250"	0.198" to 0.218"	82°	1	92908A288	00000
M3	3.2 mm					12.0 mm	2.2 mm to 2.8 mm	90°	5	92908A576	0000
M3	3.2 mm					12.0 mm	2.2 mm to 2.8 mm	100°	5	92908A622	0000
M4	4.3 mm					16.0 mm	2.7 mm to 3.3 mm	90°	5	92908A240	0000
M4	4.3 mm					16.0 mm	2.7 mm to 3.3 mm	100°	5	92908A667	0000


M5	5.3 mm					22.0 mm	3.2 mm to 3.8 mm	90°	5	92908A250	00000
M5	5.3 mm					22.0 mm	3.2 mm to 3.8 mm	100°	1	92908A677	0000
M6	6.4 mm					32.0 mm	3.7 mm to 4.3 mm	90°	1	92908A265	0000
M6	6.4 mm					32.0 mm	3.7 mm to 4.3 mm	100°	1	92908A809	0000
M8	8.4 mm					32.0 mm	4.5 mm to 5.1 mm	90°	1	92908A588	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.

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

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

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.

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

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



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


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


	Zinc-Plated Steel



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


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


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


			Black-Oxide Steel



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


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