ISO 7089 Washers | McMaster-Carr

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General Purpose Washers

Your go-to metal washer for every screw size. Washers take the pressure off nuts and screws to protect mounting surfaces.

Stainless Steel About Stainless Steel

18-8 Stainless Steel—The choice for wet and outdoor environments, these washers resist rust. However, they won'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 resist rust in wet and outdoor environments, but won't hold up to harsh chemicals as well as 316 stainless steel.

Super-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.

Super-Corrosion-Resistant High-Strength Bumax 109 Stainless Steel—As strong as 17-7 PH stainless steel and as corrosion resistant as 316 stainless steel. These washers are commonly used in demanding environments, such as marine and chemical processing applications.

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


		M1	1.1	3.2	0.2 to 0.4	ISO 7089	100	000000000	00000
		M1.2	1.3	3.8	0.2 to 0.4	ISO 7089	100	000000000	0000
		M1.4	1.5	3.8	0.2 to 0.4	ISO 7089	100	000000000	0000
		M1.6	1.7	4.0	0.2 to 0.4	DIN 125, ISO 7089	100	000000000	0000
		M2	2.2	5.0	0.2 to 0.4	DIN 125, ISO 7089	100	000000000	0000
		M2.5	2.7	6.0	0.4 to 0.6	DIN 125, ISO 7089	100	000000000	0000
		M3	3.2	7.0	0.4 to 0.6	DIN 125, ISO 7089	100	000000000	0000
		M3.5	3.7	8.0	0.4 to 0.6	DIN 125, ISO 7089	100	000000000	0000
		M4	4.3	9.0	0.7 to 0.9	DIN 125, ISO 7089	100	000000000	0000
		M5	5.3	10.0	0.9 to 1.1	DIN 125, ISO 7089	100	000000000	0000
		M6	6.4	12.0	1.4 to 1.8	DIN 125, ISO 7089	100	000000000	0000
		M7	7.4	14.0	1.4 to 1.8	DIN 125, ISO 7089	100	000000000	0000
		M8	8.4	16.0	1.4 to 1.8	DIN 125, ISO 7089	100	000000000	00000
		M10	10.5	20.0	1.8 to 2.2	DIN 125, ISO 7089	50	000000000	00000
		M12	13.0	24.0	2.3 to 2.7	DIN 125, ISO 7089	25	000000000	00000
		M14	15.0	28.0	2.3 to 2.7	DIN 125, ISO 7089	25	000000000	00000
		M16	17.0	30.0	2.7 to 3.3	DIN 125, ISO 7089	25	000000000	00000
		M18	19.0	34.0	2.7 to 3.3	DIN 125, ISO 7089	10	000000000	0000
		M20	21.0	37.0	2.7 to 3.3	DIN 125, ISO 7089	10	000000000	00000
		M22	23.0	39.0	2.7 to 3.3	DIN 125, ISO 7089	1	000000000	0000
		M24	25.0	44.0	3.7 to 4.3	DIN 125, ISO 7089	10	000000000	00000
		M30	31.0	56.0	3.7 to 4.3	DIN 125, ISO 7089	1	000000000	0000
		M36	37.0	66.0	4.4 to 5.6	DIN 125, ISO 7089	1	000000000	0000
		M39	40.0	72.0	5.4 to 6.6	DIN 125, ISO 7089	1	000000000	0000
		M42	43.0	78.0	6.0 to 8.0	DIN 125, ISO 7089	1	000000000	0000

		Black-Oxide 18-8 Stainless Steel


				M3	3.2	7.0	0.4 to 0.6	DIN 125, ISO 7089	100	000000000	0000
				M4	4.3	9.0	0.7 to 0.9	DIN 125, ISO 7089	100	000000000	0000
				M5	5.3	10.0	0.9 to 1.1	DIN 125, ISO 7089	100	000000000	0000
				M6	6.4	12.0	1.4 to 1.8	DIN 125, ISO 7089	100	000000000	00000

				Super-Corrosion-Resistant 316 Stainless Steel


						M1.6	1.7	4.0	0.2 to 0.4	DIN 125, ISO 7089	100	000000000	0000
						M2	2.2	5.0	0.2 to 0.4	DIN 125, ISO 7089	100	000000000	0000
						M2.5	2.7	6.0	0.4 to 0.6	DIN 125, ISO 7089	100	000000000	0000
						M3	3.2	7.0	0.4 to 0.6	DIN 125, ISO 7089	100	000000000	0000
						M3.5	3.7	8.0	0.4 to 0.6	DIN 125, ISO 7089	100	000000000	0000
						M4	4.3	9.0	0.7 to 0.9	DIN 125, ISO 7089	100	000000000	0000
						M5	5.3	10.0	0.9 to 1.1	DIN 125, ISO 7089	100	000000000	0000
						M6	6.4	12.0	1.4 to 1.8	DIN 125, ISO 7089	100	000000000	0000
						M7	7.4	14.0	1.4 to 1.8	DIN 125, ISO 7089	100	000000000	00000
						M8	8.4	16.0	1.4 to 1.8	DIN 125, ISO 7089	100	000000000	00000
						M10	10.5	20.0	1.8 to 2.2	DIN 125, ISO 7089	50	000000000	00000
						M12	13.0	24.0	2.3 to 2.7	DIN 125, ISO 7089	25	000000000	00000
						M14	15.0	28.0	2.3 to 2.7	DIN 125, ISO 7089	25	000000000	00000
						M16	17.0	30.0	2.7 to 3.3	DIN 125, ISO 7089	25	000000000	00000
						M18	19.0	34.0	2.7 to 3.3	DIN 125, ISO 7089	10	000000000	0000
						M20	21.0	37.0	2.7 to 3.3	DIN 125, ISO 7089	10	000000000	0000
						M24	25.0	44.0	3.7 to 4.3	DIN 125, ISO 7089	5	000000000	0000
						M30	31.0	56.0	3.7 to 4.3	DIN 125, ISO 7089	5	000000000	00000
						M36	37.0	66.0	4.4 to 5.6	DIN 125, ISO 7089	1	000000000	0000
						M39	40.0	72.0	5.4 to 6.6	DIN 125, ISO 7089	1	000000000	00000
						M42	43.0	78.0	6.0 to 8.0	DIN 125, ISO 7089	1	000000000	00000

						Super-Corrosion-Resistant High-Strength Bumax 109 Stainless Steel


M6								6.4	12.0	1.4 to 1.8	DIN 125, ISO 7089	10	000000000	0000
M8	8.4							16.0	1.4 to 1.8	DIN 125, ISO 7089	10	000000000	0000
M10	10.5							20.0	1.8 to 2.2	DIN 125, ISO 7089	5	000000000	0000
M12	13.0							24.0	2.3 to 2.7	DIN 125, ISO 7089	5	000000000	00000

Steel

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.

Super-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.

Black Super-Corrosion-Resistant-Coated Steel—Combines a finished appearance with the rust resistance of 316 stainless steel. The coating has been tested to extreme standards, including 1,000 hours of salt spray resistance, to hold up in wet and outdoor environments. Also known as black luster.

For Fastener Strength Grade/Class—If you require screws or nuts with a specific fastener strength rating, make sure your washer matches the grade or class.

	For Screw Size	ID, mm	OD, mm	Thk., mm	For Fastener Strength Grade/Class	Specs. Met	Pkg. Qty.		Pkg.
Zinc-Plated Steel


		M1.6	1.7	4.0	0.2 to 0.4	—	DIN 125, ISO 7089	100	000000000	00000
		M2	2.2	5.0	0.2 to 0.4	—	DIN 125, ISO 7089	100	000000000	0000
		M2	2.2	5.0	0.2 to 0.4	ISO Class 8.8	DIN 125, ISO 7089	100	000000000	0000
		M2	2.2	5.0	0.3 to 0.4	ISO Class 10.9	DIN 125, ISO 7089	100	000000000	00000
		M2.5	2.7	6.0	0.4 to 0.6	—	DIN 125, ISO 7089	100	000000000	0000
		M2.5	2.7	6.0	0.4 to 0.6	ISO Class 8.8	DIN 125, ISO 7089	100	000000000	0000
		M2.5	2.7	6.0	0.5 to 0.6	ISO Class 10.9	DIN 125, ISO 7089	100	000000000	0000
		M3	3.2	7.0	0.4 to 0.6	—	DIN 125, ISO 7089	100	000000000	0000
		M3	3.2	7.0	0.4 to 0.6	ISO Class 8.8	DIN 125, ISO 7089	100	000000000	0000
		M3	3.2	7.0	0.5 to 0.6	ISO Class 10.9	DIN 125, ISO 7089	100	000000000	0000
		M3.5	3.7	8.0	0.4 to 0.6	—	DIN 125, ISO 7089	100	000000000	0000
		M4	4.3	9.0	0.7 to 0.9	—	DIN 125, ISO 7089	100	000000000	0000
		M4	4.3	9.0	0.7 to 0.9	ISO Class 8.8	DIN 125, ISO 7089	100	000000000	0000
		M4	4.3	9.0	0.7 to 0.9	ISO Class 10.9	DIN 125, ISO 7089	100	000000000	00000
		M5	5.3	10.0	0.9 to 1.1	—	DIN 125, ISO 7089	100	000000000	0000
		M5	5.3	10.0	0.9 to 1.1	ISO Class 8.8	DIN 125, ISO 7089	100	000000000	0000
		M5	5.3	10.0	0.9 to 1.1	ISO Class 10.9	DIN 125, ISO 7089	100	000000000	00000
		M6	6.4	12.0	1.4 to 1.8	—	DIN 125, ISO 7089	100	000000000	0000
		M6	6.4	12.0	1.4 to 1.8	ISO Class 8.8	DIN 125, ISO 7089	100	000000000	0000
		M6	6.4	12.0	1.4 to 1.8	ISO Class 10.9	DIN 125, ISO 7089	100	000000000	00000
		M7	7.4	14.0	1.4 to 1.8	—	DIN 125, ISO 7089	100	000000000	0000
		M8	8.4	16.0	1.4 to 1.8	—	DIN 125, ISO 7089	100	000000000	0000
		M8	8.4	16.0	1.4 to 1.8	ISO Class 8.8	DIN 125, ISO 7089	100	000000000	00000
		M8	8.4	16.0	1.4 to 1.8	ISO Class 10.9	DIN 125, ISO 7089	50	000000000	0000
		M10	10.5	20.0	1.8 to 2.2	—	DIN 125, ISO 7089	100	000000000	0000
		M10	10.5	20.0	1.8 to 2.2	ISO Class 8.8	DIN 125, ISO 7089	100	000000000	00000
		M10	10.5	20.0	1.8 to 2.2	ISO Class 10.9	DIN 125, ISO 7089	50	000000000	00000
		M12	13.0	24.0	2.3 to 2.7	—	DIN 125, ISO 7089	100	000000000	0000
		M12	13.0	24.0	2.3 to 2.7	ISO Class 8.8	DIN 125, ISO 7089	50	000000000	00000
		M12	13.0	24.0	2.3 to 2.7	ISO Class 10.9	DIN 125, ISO 7089	25	000000000	0000
		M14	15.0	28.0	2.3 to 2.7	—	DIN 125, ISO 7089	100	000000000	00000
		M14	15.0	28.0	2.3 to 2.7	ISO Class 8.8	DIN 125, ISO 7089	50	000000000	00000
		M14	15.0	28.0	2.3 to 2.7	ISO Class 10.9	DIN 125, ISO 7089	25	000000000	00000
		M16	17.0	30.0	2.7 to 3.3	—	DIN 125, ISO 7089	100	000000000	00000
		M16	17.0	30.0	2.7 to 3.3	ISO Class 8.8	DIN 125, ISO 7089	50	000000000	00000
		M16	17.0	30.0	2.7 to 3.3	ISO Class 10.9	DIN 125, ISO 7089	25	000000000	00000
		M18	19.0	34.0	2.7 to 3.3	—	DIN 125, ISO 7089	50	000000000	00000
		M18	19.0	34.0	2.7 to 3.3	ISO Class 8.8	DIN 125, ISO 7089	25	000000000	00000
		M18	19.0	34.0	2.7 to 3.3	ISO Class 10.9	DIN 125, ISO 7089	5	000000000	0000
		M20	21.0	37.0	2.7 to 3.3	—	DIN 125, ISO 7089	50	000000000	00000
		M20	21.0	37.0	2.7 to 3.3	ISO Class 8.8	DIN 125, ISO 7089	25	000000000	00000
		M20	21.0	37.0	2.7 to 3.3	ISO Class 10.9	DIN 125, ISO 7089	10	000000000	0000
		M22	23.0	39.0	2.7 to 3.3	ISO Class 8.8	DIN 125, ISO 7089	5	000000000	00000
		M22	23.0	39.0	2.7 to 3.3	ISO Class 10.9	DIN 125, ISO 7089	5	000000000	0000
		M24	25.0	44.0	3.7 to 4.3	—	DIN 125, ISO 7089	25	000000000	00000
		M24	25.0	44.0	3.7 to 4.3	ISO Class 8.8	DIN 125, ISO 7089	5	000000000	0000
		M24	25.0	44.0	3.7 to 4.3	ISO Class 10.9	DIN 125, ISO 7089	10	000000000	00000
		M30	31.0	56.0	3.7 to 4.3	—	DIN 125, ISO 7089	10	000000000	0000
		M30	31.0	56.0	3.7 to 4.3	ISO Class 8.8	DIN 125, ISO 7089	5	000000000	00000
		M30	31.0	56.0	3.7 to 4.3	ISO Class 10.9	DIN 125, ISO 7089	1	000000000	0000
		M36	37.0	66.0	4.4 to 5.6	—	DIN 125, ISO 7089	10	000000000	00000
		M36	37.0	66.0	4.4 to 5.6	ISO Class 8.8	DIN 125, ISO 7089	1	000000000	0000
		M39	40.0	72.0	5.4 to 6.6	ISO Class 8.8	DIN 125, ISO 7089	1	000000000	00000
		M42	43.0	78.0	6.0 to 8.0	ISO Class 8.8	DIN 125, ISO 7089	1	000000000	00000

		Zinc-Yellow-Chromate-Plated Steel


				M3	3.2	7.0	0.5 to 0.6	ISO Class 10.9	DIN 125, ISO 7089	100	000000000	0000
				M4	4.3	9.0	0.7 to 0.9	ISO Class 10.9	DIN 125, ISO 7089	100	000000000	00000
				M5	5.3	10.0	0.9 to 1.1	ISO Class 10.9	DIN 125, ISO 7089	100	000000000	00000
				M6	6.4	12.0	1.4 to 1.8	ISO Class 10.9	DIN 125, ISO 7089	50	000000000	00000
M8				8.4	16.0	1.4 to 1.8	ISO Class 10.9	DIN 125, ISO 7089	25	000000000	0000
M10	10.5			20.0	1.8 to 2.2	ISO Class 10.9	DIN 125, ISO 7089	25	000000000	00000
M12	13.0			24.0	2.3 to 2.7	ISO Class 10.9	DIN 125, ISO 7089	10	000000000	0000
M14	15.0			28.0	2.3 to 2.7	ISO Class 10.9	DIN 125, ISO 7089	10	000000000	0000
M16	17.0			30.0	2.7 to 3.3	ISO Class 10.9	DIN 125, ISO 7089	5	000000000	0000
M18	19.0			34.0	2.7 to 3.3	ISO Class 10.9	DIN 125, ISO 7089	5	000000000	0000
M20	21.0			37.0	2.7 to 3.3	ISO Class 10.9	DIN 125, ISO 7089	5	000000000	0000
M22	23.0			39.0	2.7 to 3.3	ISO Class 10.9	DIN 125, ISO 7089	5	000000000	0000
M22	23.0			39.0	2.7 to 3.3	ISO Class 12.9	DIN 125, ISO 7089	25	000000000	0000
M24	25.0			44.0	3.7 to 4.3	ISO Class 10.9	DIN 125, ISO 7089	1	000000000	0000
M30	31.0			56.0	3.7 to 4.3	ISO Class 10.9	DIN 125, ISO 7089	1	000000000	0000
M30	31.0			56.0	3.7 to 4.3	ISO Class 12.9	DIN 125, ISO 7089	10	000000000	0000

Black-Oxide Steel


				M2	2.2	5.0	0.3 to 0.4	—	DIN 125, ISO 7089	50	000000000	0000
				M3	3.2	7.0	0.4 to 0.6	—	DIN 125, ISO 7089	100	000000000	0000
				M4	4.3	9.0	0.7 to 0.9	—	DIN 125, ISO 7089	100	000000000	0000
				M5	5.3	10.0	0.9 to 1.1	—	DIN 125, ISO 7089	100	000000000	0000
				M6	6.4	12.0	1.4 to 1.8	—	DIN 125, ISO 7089	50	000000000	00000
				M10	10.5	20.0	1.8 to 2.2	—	DIN 125, ISO 7089	25	000000000	00000
				M22	23.0	39.0	2.7 to 3.3	—	DIN 125, ISO 7089	5	000000000	0000

				Blue-Dyed Steel


						M4	4.3	9.0	0.7 to 0.9	—	DIN 125, ISO 7089	100	000000000	0000
						M5	5.3	10.0	0.9 to 1.1	—	DIN 125, ISO 7089	100	000000000	0000
						M6	6.4	12.0	1.4 to 1.8	—	DIN 125, ISO 7089	100	000000000	0000
						M8	8.4	16.0	1.4 to 1.8	—	DIN 125, ISO 7089	100	000000000	0000
						M12	13.0	24.0	2.3 to 2.7	—	DIN 125, ISO 7089	50	000000000	0000

						Steel


								M35	36.0	66.0	4.4 to 5.6	—	DIN 125, ISO 7089	1	000000000	0000

								Super-Corrosion-Resistant Zinc-Flake-Coated Steel


										M4	4.3	9.0	0.7 to 0.9	ISO Class 8.8	DIN 125, ISO 7089	50	000000000	0000
										M5	5.3	10.0	0.9 to 1.1	ISO Class 8.8	DIN 125, ISO 7089	50	000000000	0000
										M6	6.4	12.0	1.4 to 1.8	ISO Class 8.8	DIN 125, ISO 7089	50	000000000	0000
										M6	6.4	12.0	1.4 to 1.8	ISO Class 10.9	DIN 125, ISO 7089	100	000000000	0000
										M8	8.4	16.0	1.4 to 1.8	ISO Class 8.8	DIN 125, ISO 7089	50	000000000	00000
										M8	8.4	16.0	1.4 to 1.8	ISO Class 10.9	DIN 125, ISO 7089	100	000000000	0000
										M10	10.5	20.0	1.8 to 2.2	ISO Class 8.8	DIN 125, ISO 7089	25	000000000	00000
										M10	10.5	20.0	1.8 to 2.2	ISO Class 10.9	DIN 125, ISO 7089	100	000000000	0000
										M12	13.0	24.0	2.3 to 2.7	ISO Class 8.8	DIN 125, ISO 7089	10	000000000	0000
										M12	13.0	24.0	2.3 to 2.7	ISO Class 10.9	DIN 125, ISO 7089	100	000000000	00000
										M14	15.0	28.0	2.3 to 2.7	ISO Class 8.8	DIN 125, ISO 7089	10	000000000	00000
										M16	17.0	30.0	2.7 to 3.3	ISO Class 8.8	DIN 125, ISO 7089	10	000000000	00000
										M18	19.0	34.0	2.7 to 3.3	ISO Class 8.8	DIN 125, ISO 7089	5	000000000	00000
										M20	21.0	37.0	2.7 to 3.3	ISO Class 8.8	DIN 125, ISO 7089	5	000000000	00000
										M24	25.0	44.0	3.7 to 4.3	ISO Class 8.8	DIN 125, ISO 7089	1	000000000	0000
										M30	31.0	56.0	3.7 to 4.3	ISO Class 8.8	DIN 125, ISO 7089	1	000000000	00000

										Black Super-Corrosion-Resistant-Coated Steel


										M4	4.3	9.0	0.7 to 0.9	—	DIN 125, ISO 7089	10	000000000	0000
										M5	5.3	10.0	0.9 to 1.1	—	DIN 125, ISO 7089	10	000000000	0000
										M6	6.4	12.0	1.4 to 1.8	—	DIN 125, ISO 7089	10	000000000	00000
										M7	7.4	14.0	1.4 to 1.8	—	DIN 125, ISO 7089	5	000000000	0000
										M8	8.4	16.0	1.4 to 1.8	—	DIN 125, ISO 7089	5	000000000	0000
										M10	10.5	20.0	1.8 to 2.2	—	DIN 125, ISO 7089	5	000000000	0000
										M12	13.0	24.0	2.3 to 2.7	—	DIN 125, ISO 7089	5	000000000	0000
										M14	15.0	28.0	2.3 to 2.7	—	DIN 125, ISO 7089	5	000000000	0000
										M16	17.0	30.0	2.7 to 3.3	—	DIN 125, ISO 7089	5	000000000	0000
										M18	19.0	34.0	2.7 to 3.3	—	DIN 125, ISO 7089	5	000000000	0000
										M20	21.0	37.0	2.7 to 3.3	—	DIN 125, ISO 7089	5	000000000	0000
										M24	25.0	44.0	3.3 to 4.3	—	DIN 125, ISO 7089	1	000000000	0000

Aluminum

One-third the weight of steel, these washers are commonly used in robotics, automation, and other applications that have weight limits. They're an alternative to stainless steel for rust resistance, but aren't as strong.

	ID, mm	OD, mm	Thk., mm	Specs. Met	Pkg. Qty.		Pkg.
Aluminum


	M1.6	1.7	4.0	0.2 to 0.4	DIN 125, ISO 7089	10	000000000	000000
	M2	2.2	5.0	0.2 to 0.4	DIN 125, ISO 7089	10	000000000	00000
	M2.5	2.7	6.0	0.4 to 0.6	DIN 125, ISO 7089	10	000000000	00000
	M3	3.2	7.0	0.4 to 0.6	DIN 125, ISO 7089	10	000000000	00000
	M3.5	3.7	8.0	0.4 to 0.6	DIN 125, ISO 7089	10	000000000	00000
	M4	4.3	9.0	0.7 to 0.9	DIN 125, ISO 7089	10	000000000	00000
	M5	5.3	10.0	0.9 to 1.1	DIN 125, ISO 7089	10	000000000	00000
	M6	6.4	12.0	1.4 to 1.8	DIN 125, ISO 7089	10	000000000	00000
	M7	7.4	14.0	1.4 to 1.8	DIN 125, ISO 7089	10	000000000	00000
	M8	8.4	16.0	1.4 to 1.8	DIN 125, ISO 7089	10	000000000	00000
	M10	10.5	20.0	1.8 to 2.2	DIN 125, ISO 7089	10	000000000	00000
	M12	13.0	24.0	2.3 to 2.7	DIN 125, ISO 7089	10	000000000	00000
	M14	15.0	28.0	2.3 to 2.7	DIN 125, ISO 7089	5	000000000	0000
	M16	17.0	30.0	2.7 to 3.3	DIN 125, ISO 7089	5	000000000	0000
	M18	19.0	34.0	2.7 to 3.3	DIN 125, ISO 7089	5	000000000	00000
	M20	21.0	37.0	2.7 to 3.3	DIN 125, ISO 7089	5	000000000	00000

Brass

Softer than most metals, brass washers won't damage other fastening components.

Brass—With a warm, polished look, these washers are often chosen for their appearance. Similar to 18-8 stainless steel, brass is corrosion resistant enough to stand up to wet environments.

	ID, mm	OD, mm	Thk., mm	Specs. Met	Pkg. Qty.		Pkg.
Brass


	M1.6	1.7	4.0	0.2 to 0.4	DIN 125, ISO 7089	10	000000000	00000
	M2	2.2	5.0	0.2 to 0.4	DIN 125, ISO 7089	100	000000000	0000
	M2.5	2.7	6.0	0.4 to 0.6	DIN 125, ISO 7089	100	000000000	0000
	M3	3.2	7.0	0.4 to 0.6	DIN 125, ISO 7089	100	000000000	0000
	M4	4.3	9.0	0.7 to 0.9	DIN 125, ISO 7089	100	000000000	0000
	M5	5.3	10.0	0.9 to 1.1	DIN 125, ISO 7089	100	000000000	0000
	M6	6.4	12.0	1.4 to 1.8	DIN 125, ISO 7089	100	000000000	00000
	M7	7.4	14.0	1.4 to 1.8	DIN 125, ISO 7089	10	000000000	0000
	M8	8.4	16.0	1.4 to 1.8	DIN 125, ISO 7089	50	000000000	00000
	M10	10.5	20.0	1.8 to 2.2	DIN 125, ISO 7089	25	000000000	00000
	M12	13.0	24.0	2.3 to 2.7	DIN 125, ISO 7089	25	000000000	00000
	M14	15.0	28.0	2.3 to 2.7	DIN 125, ISO 7089	10	000000000	00000
	M16	17.0	30.0	2.7 to 3.3	DIN 125, ISO 7089	10	000000000	00000
	M18	19.0	34.0	2.7 to 3.3	DIN 125, ISO 7089	1	000000000	0000
	M20	21.0	37.0	2.7 to 3.3	DIN 125, ISO 7089	5	000000000	00000
	M24	25.0	44.0	3.7 to 4.3	DIN 125, ISO 7089	1	000000000	0000

Copper

These have the best conductivity of all our metal washers. They're often used to secure electrical connections inside breaker panels and to fasten components on printed circuit boards. They're also the softest of all our metal washers, so they won't damage screws and nuts. However, copper washers aren't as corrosion resistant as brass washers, and will develop a green patina over time.

	ID, mm	OD, mm	Thk., mm	Specs. Met	Pkg. Qty.		Pkg.
Copper


	M3	3.2	7.0	0.4 to 0.6	DIN 125, ISO 7089	25	000000000	000000
	M4	4.3	9.0	0.7 to 0.9	DIN 125, ISO 7089	25	000000000	0000
	M5	5.3	10.0	0.9 to 1.1	DIN 125, ISO 7089	25	000000000	0000
	M6	6.4	12.0	1.4 to 1.8	DIN 125, ISO 7089	25	000000000	00000
	M8	8.4	16.0	1.4 to 1.8	DIN 125, ISO 7089	10	000000000	00000
	M10	10.5	20.0	1.8 to 2.2	DIN 125, ISO 7089	5	000000000	00000
	M12	13.0	24.0	2.3 to 2.7	DIN 125, ISO 7089	5	000000000	00000
	M14	15.0	28.0	2.3 to 2.7	DIN 125, ISO 7089	1	000000000	0000
	M16	17.0	30.0	2.7 to 3.3	DIN 125, ISO 7089	1	000000000	0000
	M18	19.0	34.0	2.7 to 3.3	DIN 125, ISO 7089	1	000000000	0000
	M20	21.0	37.0	2.7 to 3.3	DIN 125, ISO 7089	1	000000000	0000