Metric Class 10 Washers | McMaster-Carr

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M10

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21 Products

General Purpose Washers

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

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.

Highly Corrosion-Resistant Zinc-Flake-Coated Steel—With 40 times the corrosion resistance of zinc-plated steel, the coating has been tested to extreme standards, including 1,000 hours of salt spray, to hold up in wet and outdoor environments. They are similar to Magni-coated washers.

Black Super-Corrosion-Resistant-Coated 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.

Material Certificate—Washers include a report with a traceable lot number.

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.

	ID, mm	OD, mm	Thk., mm	For Fastener Strength Grade/Class	Certificate Type	Pkg. Qty.		Pkg.
Zinc-Plated Steel



	M10	10.5	20.0	1.8 to 2.2	Class 10.9	—	50	91455A613	00000


	Zinc-Yellow-Chromate-Plated Steel



			M10	10.5	20.0	1.8 to 2.2	Class 10.9	Material Certificate	25	90483A156	00000


			Highly Corrosion-Resistant Zinc-Flake-Coated Steel



					M10	10.5	20.0	1.8 to 2.2	Class 10.9	—	100	90486A103	00000


					Black Super-Corrosion-Resistant-Coated Steel



							M10	10.5	20.0	1.8 to 2.2	Class 10.9	—	5	93413A343	0000

ASME Washers

Also known as Type B washers, these meet ASME sizing standards. They take the pressure off screws and nuts to protect your mounting surface.

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.

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.

	ASME Designation	ID, mm	OD, mm	Thk., mm	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	M10	Narrow	10.9	19.8	1.6 to 2.3	ASME B18.22M	1	92217A616	00000


	M10	Regular	10.9	27.7	2.0 to 2.8	ASME B18.22M	1	92217A627	0000
	M10	Wide	10.9	38.6	2.5 to 3.5	ASME B18.22M	1	92217A641	0000


	Highly Corrosion-Resistant 316 Stainless Steel



			M10	Narrow	10.9	19.8	1.6 to 2.3	ASME B18.22M	1	92844A216	0000


			M10	Regular	10.9	27.7	2.0 to 2.8	ASME B18.22M	1	92844A224	0000
			M10	Wide	10.9	38.6	2.5 to 3.5	ASME B18.22M	1	92844A233	0000

Steel

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

	ASME Designation	ID, mm	OD, mm	Thk., mm	Specs. Met	Pkg. Qty.		Pkg.
Zinc-Plated Steel



	M10	Narrow	10.9	19.7	1.6 to 2.3	ASME B18.22M	1	94744A715	00000


	M10	Regular	10.9	27.7	2.0 to 2.8	ASME B18.22M	1	94744A725	0000
	M10	Wide	10.9	38.6	2.5 to 3.5	ASME B18.22M	1	94744A737	00000

Oversized Washers

Cover oversized holes or use these washers as spacers and levelers. Compared to general purpose washers, these have a larger diameter or thickness.

Steel

Image of Product. Front orientation. Contains Annotated. Washers. Oversized Washers.

Image of Specification. Front orientation. Washers. Oversized Washers.

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.

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.

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



	M10	10.6	24.7	3.7 to 4.3	Class 10.9	DIN 7349	5	91100A326	000000


	M10	10.6	29.7	2.3 to 2.7	Class 10.9	DIN 9021	5	91100A325	00000


	Zinc-Yellow-Chromate-Plated Steel



			M10	10.6	24.7	3.7 to 4.3	Class 10.9	DIN 7349	5	98026A520	00000


			M10	10.6	29.7	2.3 to 2.7	Class 10.9	DIN 9021	5	98026A519	00000

Undersized Washers

These washers distribute pressure evenly under fasteners with narrow heads, such as cheese and socket head screws. They have smaller diameters than general purpose washers of the same screw size.

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.

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.

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



	M10	10.5	18.0	1.4 to 1.8	Class 10.9	DIN 433	25	98688A155	00000


	Zinc-Yellow-Chromate-Plated Steel



			M10	10.5	18.0	1.4 to 1.8	Class 10.9	DIN 433	25	90483A191	0000

Steel Hex Head Screw, Nut, and Washer Assortments

Keep a range of hex head screw, nut, and washer sizes on hand for a variety of jobs. The screws in these assortments have heads with six flat sides to keep wrenches and sockets slipping and rounding off the drive.

Length is measured from under the head.

High-Strength Fastener—Commonly used to fasten components in valves, pumps, motors, and other high-stress applications. These screws have a tensile strength of 125,000 to 160,000 psi.

Zinc-Yellow-Chromate-Plated Steel—With slightly better corrosion resistance than zinc-plated steel screws, these stand up to more frequent exposure to moisture.

Steel—Unfinished steel screws are best for dry environments, since moisture will cause them to rust. They require little surface prep before applying a finish, so you can apply your own paint or coating.

	Hex Head Screws Included	Hex Nuts Included	Split Lock Washers Included	Flat Washers Included	Fastener Strength Grade/Class	Container Type		Each
High-Strength Zinc-Yellow-Chromate-Plated Steel



	295	M10 × 1.5 mm Thread: 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 50 mm, 60 mm, 70 mm, and 80 mm Lg. (125 pieces)	M10 × 1.5 mm Thread (45 Pieces)	For M10 Screw Size (60 Pieces)	For M10 Screw Size (65 pieces)	Class 10.9, Class 10	Metal Box	94148A213	0000000


	High-Strength Steel



			575	M6 × 1 mm Thread: 16 mm, 25 mm, and 35 mm Lg. (75 Pieces) M8 × 1.25 mm Thread: 16 mm, 25 mm, and 35 mm Lg. (45 pieces) M10 × 1.5 mm Thread: 16 mm, 25 mm, and 35 mm Lg. (30 pieces) M12 × 1.75 mm Thread: 20 mm, 30 mm, and 40 mm Lg. (15 pieces)	M6 × 1 mm Thread (75 Pieces) M8 × 1.25 mm Thread (45 Pieces) M10 × 1.5 mm Thread (30 Pieces) M12 × 1.75 mm Thread (15 Pieces)	For M6 Screw Size (100 Pieces) For M8 Screw Size (100 Pieces) For M10 Screw Size (30 Pieces) For M12 Screw Size (15 Pieces)	—	Class 10.9, Class 10	Metal Box	91310A100	000000