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Metric General Purpose Washers
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Use these metric washers to evenly distribute the load under bolt or screw heads and nuts when fastening. They can also act as spacers.
Steel washers are stronger and more wear resistant than stainless steel washers. Zinc- and zinc yellow-chromate plated steel washers have an outer layer of zinc that protects the inner steel from rust and extends the life of the washer. Although they are stronger and more wear resistant than stainless steel, they are not as corrosion resistant. Use them in wet environments, but avoid contact with salt water and chemicals.
For technical drawings and 3-D models, click on a part number.
For Screw Size | ID, mm | OD, mm | Thickness, mm | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel | ||||||||
---|---|---|---|---|---|---|---|---|
M7 | 7.4 | 22.0 | 1.8-2.2 | Not Rated | DIN 9021 | 25 | 000000000 | 00000 |
Metric Oversized Washers
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Compared to our general purpose washers, these have exaggerated diameters and/or thicknesses. Use them to cover oversized holes, hold heavy fastening loads, or as spacers and levelers.
Plain steel washers are stronger, more wear resistant, and less costly than zinc-plated steel and stainless steel washers. They should not be used in wet or corrosive environments because they easily rust. Black-oxide steel washers have a matte-black finish that prevents corrosion in dry environments. Zinc-plated steel washers have an outer layer of zinc that prevents the steel from rusting in wet areas. Compared to stainless steel, they're stronger, more wear resistant, and less costly, but not as corrosion resistant. Avoid exposing them to salt water and chemicals. Zinc yellow-chromate plated steel washers resist corrosion in wet environments. Stainless steel washers are more corrosion resistant than steel washers, and almost as strong. Use them in damp and washdown applications without worrying about rust. 18-8 stainless steel and 17-7 PH stainless steel washers have similar qualities to one another, except 17-7 PH stainless steel washers are stronger. Black-oxide 18-8 stainless steel washers resist corrosion just as well as regular 18-8 stainless steel washers and have a matte-black finish. 316 stainless steel washers stand up to salt water, chlorine solutions, and other chemicals without rusting. Bumax 88 stainless steel washers are the most corrosion resistant washers in our offering. They're commonly used in marine environments and chemical-processing plants. Passivated stainless steel washers have added protection against oxidation and corrosion.
Washers for class 10.9 fasteners are stronger than washers for class 8.8 fasteners.
Washers that meet DIN and ISO specifications meet international standards for washer dimensions. ISO 8738 is formerly DIN 1440. ISO 7093 is formerly DIN 9021.
For technical drawings and 3-D models, click on a part number.
For Screw Size | ID, mm | OD, mm | Thick., mm | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
Steel | ||||||||
---|---|---|---|---|---|---|---|---|
M5 | 5.3 | 15.0 | 1.0-1.4 | Not Rated | DIN 9021 | 100 | 000000000 | 00000 |
M10 | 10.5 | 30.0 | 2.3-2.7 | Not Rated | DIN 9021 | 10 | 000000000 | 0000 |
M12 | 13.0 | 37.0 | 2.7-3.3 | Not Rated | DIN 9021 | 10 | 000000000 | 00000 |
M16 | 17.0 | 50.0 | 2.7-3.3 | Not Rated | DIN 9021 | 5 | 000000000 | 0000 |
M20 | 22.0 | 60.0 | 3.4-4.6 | Not Rated | DIN 9021 | 1 | 000000000 | 0000 |
Black-Oxide Steel | ||||||||
M10 | 10.5 | 30.0 | 2.3-2.7 | Not Rated | DIN 9021 | 10 | 000000000 | 0000 |
M12 | 13.0 | 37.0 | 2.7-3.3 | Not Rated | DIN 9021 | 5 | 000000000 | 0000 |
Zinc-Plated Steel | ||||||||
M2.5 | 2.7 | 8.0 | 0.7-0.9 | Rockwell B56 | DIN 9021 | 100 | 000000000 | 0000 |
M3 | 3.2 | 9.0 | 0.7-0.9 | Rockwell B56 | DIN 9021 | 100 | 000000000 | 0000 |
M4 | 4.3 | 12.0 | 0.9-1.1 | Rockwell B56 | DIN 9021 | 100 | 000000000 | 0000 |
M5 | 5.3 | 15.0 | 1.0-1.4 | Rockwell B56 | DIN 9021 | 100 | 000000000 | 0000 |
M6 | 6.4 | 18.0 | 1.4-1.8 | Rockwell B56 | DIN 9021 | 100 | 000000000 | 0000 |
M8 | 8.4 | 24.0 | 1.8-2.2 | Rockwell B56 | DIN 9021 | 100 | 000000000 | 00000 |
M10 | 10.5 | 30.0 | 2.3-2.7 | Rockwell B56 | DIN 9021 | 50 | 000000000 | 00000 |
M12 | 13.0 | 37.0 | 2.7-3.3 | Rockwell B56 | DIN 9021 | 25 | 000000000 | 00000 |
M14 | 15.0 | 44.0 | 2.7-3.3 | Rockwell B75 | DIN 9021 | 25 | 000000000 | 00000 |
M16 | 17.0 | 50.0 | 2.7-3.3 | Rockwell B56 | DIN 9021 | 25 | 000000000 | 00000 |
M18 | 20.0 | 56.0 | 3.4-4.6 | Rockwell B56 | DIN 9021 | 10 | 000000000 | 00000 |
M20 | 22.0 | 60.0 | 3.4-4.6 | Rockwell B56 | DIN 9021 | 10 | 000000000 | 00000 |
M24 | 26.8 | 72.0 | 4.0-6.0 | Rockwell B53 | DIN 9021 | 1 | 000000000 | 0000 |
Zinc-Plated Steel for Class 8.8 Fasteners | ||||||||
M3 | 3.3 | 8.7 | 0.7-0.9 | Not Rated | DIN 9021 | 100 | 000000000 | 00000 |
M4 | 4.4 | 11.7 | 0.9-1.1 | Not Rated | DIN 9021 | 100 | 000000000 | 00000 |
M5 | 5.4 | 14.7 | 1.0-1.4 | Not Rated | DIN 9021 | 100 | 000000000 | 00000 |
M6 | 6.5 | 17.7 | 1.4-1.8 | Not Rated | DIN 9021 | 50 | 000000000 | 00000 |
M8 | 8.5 | 23.7 | 1.8-2.2 | Not Rated | DIN 9021 | 25 | 000000000 | 00000 |
M10 | 10.6 | 29.7 | 2.3-2.7 | Not Rated | DIN 9021 | 10 | 000000000 | 00000 |
M12 | 13.1 | 36.6 | 2.7-3.3 | Not Rated | DIN 9021 | 5 | 000000000 | 00000 |
M16 | 17.1 | 49.6 | 2.7-3.3 | Not Rated | DIN 9021 | 1 | 000000000 | 0000 |
M20 | 22.2 | 58.4 | 3.4-4.6 | Not Rated | DIN 9021 | 1 | 000000000 | 0000 |
Zinc-Plated Steel for Class 10.9 Fasteners | ||||||||
M6 | 6.5 | 17.7 | 1.4-1.8 | Not Rated | DIN 9021 | 25 | 000000000 | 00000 |
M8 | 8.5 | 23.7 | 1.8-2.2 | Not Rated | DIN 9021 | 10 | 000000000 | 0000 |
M10 | 10.6 | 29.7 | 2.3-2.7 | Not Rated | DIN 9021 | 5 | 000000000 | 00000 |
M12 | 13.1 | 36.6 | 2.7-3.3 | Not Rated | DIN 9021 | 5 | 000000000 | 00000 |
M14 | 15.1 | 43.6 | 2.7-3.3 | Not Rated | DIN 9021 | 1 | 000000000 | 0000 |
M16 | 17.1 | 49.6 | 2.7-3.3 | Not Rated | DIN 9021 | 1 | 000000000 | 0000 |
M20 | 22.2 | 58.5 | 3.4-4.6 | Not Rated | DIN 9021 | 1 | 000000000 | 00000 |
Zinc Yellow-Chromate Plated Steel for Class 10.9 Fasteners | ||||||||
M6 | 6.5 | 17.7 | 1.4-1.8 | Not Rated | DIN 9021 | 25 | 000000000 | 00000 |
M8 | 8.5 | 23.7 | 1.8-2.2 | Not Rated | DIN 9021 | 10 | 000000000 | 0000 |
M10 | 10.6 | 29.7 | 2.3-2.7 | Not Rated | DIN 9021 | 5 | 000000000 | 00000 |
M12 | 13.1 | 36.6 | 2.7-3.3 | Not Rated | DIN 9021 | 5 | 000000000 | 00000 |
M16 | 17.1 | 49.6 | 2.7-3.3 | Not Rated | DIN 9021 | 1 | 000000000 | 0000 |
Black Corrosion-Resistant-Coated Steel | ||||||||
M4 | 4.3 | 12.0 | 0.9-1.1 | Rockwell B56 | DIN 9021, ISO 7093 | 5 | 000000000 | 0000 |
M5 | 5.3 | 15.0 | 1.0-1.4 | Rockwell B56 | DIN 9021, ISO 7093 | 5 | 000000000 | 0000 |
M6 | 6.4 | 18.0 | 1.4-1.8 | Rockwell B56 | DIN 9021, ISO 7093 | 5 | 000000000 | 0000 |
M8 | 8.4 | 24.0 | 1.8-2.2 | Rockwell B56 | DIN 9021, ISO 7093 | 5 | 000000000 | 0000 |
M10 | 10.5 | 30.0 | 2.3-2.7 | Rockwell B56 | DIN 9021, ISO 7093 | 5 | 000000000 | 00000 |
M12 | 13.0 | 37.0 | 2.7-3.3 | Rockwell B56 | DIN 9021, ISO 7093 | 1 | 000000000 | 0000 |
M14 | 15.0 | 44.0 | 2.7-3.3 | Rockwell B56 | DIN 9021, ISO 7093 | 1 | 000000000 | 0000 |
18-8 Stainless Steel | ||||||||
M2.5 | 2.7 | 8.0 | 0.7-0.9 | Rockwell B52 | DIN 9021 | 100 | 000000000 | 0000 |
M3 | 3.2 | 9.0 | 0.7-0.9 | Rockwell B52 | DIN 9021 | 100 | 000000000 | 0000 |
M4 | 4.3 | 12.0 | 0.9-1.1 | Rockwell B52 | DIN 9021 | 100 | 000000000 | 0000 |
M5 | 5.3 | 15.0 | 1.0-1.4 | Rockwell B52 | DIN 9021 | 100 | 000000000 | 00000 |
M6 | 6.4 | 18.0 | 1.4-1.8 | Rockwell B52 | DIN 9021 | 50 | 000000000 | 00000 |
M8 | 8.4 | 24.0 | 1.8-2.2 | Rockwell B52 | DIN 9021 | 25 | 000000000 | 00000 |
M10 | 10.5 | 30.0 | 2.3-2.7 | Rockwell B52 | DIN 9021 | 10 | 000000000 | 0000 |
M12 | 13.0 | 37.0 | 2.7-3.3 | Rockwell B52 | DIN 9021 | 10 | 000000000 | 00000 |
M16 | 17.0 | 50.0 | 2.7-3.3 | Rockwell B52 | DIN 9021 | 5 | 000000000 | 00000 |
M20 | 22.0 | 60.0 | 3.4-4.6 | Rockwell B52 | DIN 9021 | 1 | 000000000 | 0000 |
M24 | 26.0 | 72.0 | 4.0-6.0 | Rockwell B68 | DIN 9021 | 1 | 000000000 | 0000 |
17-7 PH Stainless Steel | ||||||||
M3 | 3.2 | 9.0 | 0.7-0.9 | Rockwell C40 | DIN 9021 | 10 | 000000000 | 00000 |
M6 | 7.0 | 13.6 | 2.7-4.0 | Rockwell C40 | DIN 9021 | 1 | 000000000 | 00000 |
M8 | 8.4 | 22.0 | 4.5-5.4 | Rockwell C40 | DIN 9021 | 1 | 000000000 | 00000 |
Passivated 18-8 Stainless Steel | ||||||||
M7 | 7.4 | 22.0 | 1.8-2.2 | Rockwell B75 | DIN 9021 | 25 | 000000000 | 00000 |
M14 | 15.0 | 44.0 | 2.7-3.3 | Rockwell B75 | DIN 9021 | 1 | 000000000 | 0000 |
M18 | 20.0 | 56.0 | 3.4-4.6 | Rockwell B75 | DIN 9021 | 1 | 000000000 | 0000 |
Black-Oxide 18-8 Stainless Steel | ||||||||
M2.5 | 2.7 | 8.0 | 0.7-0.9 | Rockwell B68 | DIN 9021 | 10 | 000000000 | 00000 |
M3 | 3.2 | 9.0 | 0.7-0.9 | Rockwell B68 | DIN 9021 | 10 | 000000000 | 00000 |
M4 | 4.3 | 12.0 | 0.9-1.1 | Rockwell B68 | DIN 9021 | 10 | 000000000 | 00000 |
M5 | 5.3 | 15.0 | 1.0-1.4 | Rockwell B68 | DIN 9021 | 10 | 000000000 | 00000 |
M6 | 6.4 | 18.0 | 1.4-1.8 | Rockwell B68 | DIN 9021 | 10 | 000000000 | 00000 |
M7 | 7.4 | 22.0 | 1.8-2.2 | Rockwell B68 | DIN 9021 | 10 | 000000000 | 00000 |
M8 | 8.4 | 24.0 | 1.8-2.2 | Rockwell B68 | DIN 9021 | 5 | 000000000 | 0000 |
M10 | 10.5 | 30.0 | 2.3-2.7 | Rockwell B68 | DIN 9021 | 5 | 000000000 | 00000 |
M12 | 13.0 | 37.0 | 2.7-3.3 | Rockwell B68 | DIN 9021 | 1 | 000000000 | 0000 |
M14 | 15.0 | 44.0 | 2.7-3.3 | Rockwell B68 | DIN 9021 | 1 | 000000000 | 0000 |
M16 | 17.0 | 50.0 | 2.7-3.3 | Rockwell B68 | DIN 9021 | 1 | 000000000 | 0000 |
M18 | 20.0 | 56.0 | 3.4-4.6 | Rockwell B68 | DIN 9021 | 1 | 000000000 | 0000 |
M20 | 22.0 | 60.0 | 3.4-4.6 | Rockwell B68 | DIN 9021 | 1 | 000000000 | 0000 |
316 Stainless Steel | ||||||||
M24 | 26.8 | 72.0 | 4.0-6.0 | Rockwell B68 | DIN 9021 | 1 | 000000000 | 0000 |
Passivated 316 Stainless Steel | ||||||||
M2.5 | 2.7 | 8.0 | 0.7-0.9 | Rockwell B75 | DIN 9021 | 100 | 000000000 | 0000 |
M3 | 3.2 | 9.0 | 0.7-0.9 | Rockwell B75 | DIN 9021 | 50 | 000000000 | 0000 |
M4 | 4.3 | 12.0 | 0.9-1.1 | Rockwell B75 | DIN 9021 | 50 | 000000000 | 0000 |
M5 | 5.3 | 15.0 | 1.0-1.4 | Rockwell B75 | DIN 9021 | 50 | 000000000 | 00000 |
M6 | 6.4 | 18.0 | 1.4-1.8 | Rockwell B75 | DIN 9021 | 25 | 000000000 | 0000 |
M7 | 7.4 | 22.0 | 1.8-2.2 | Rockwell B75 | DIN 9021 | 10 | 000000000 | 0000 |
M8 | 8.4 | 24.0 | 1.8-2.2 | Rockwell B75 | DIN 9021 | 10 | 000000000 | 0000 |
M10 | 10.5 | 30.0 | 2.3-2.7 | Rockwell B75 | DIN 9021 | 5 | 000000000 | 0000 |
M12 | 13.0 | 37.0 | 2.7-3.3 | Rockwell B75 | DIN 9021 | 1 | 000000000 | 0000 |
M14 | 15.0 | 44.0 | 2.7-3.3 | Rockwell B75 | DIN 9021 | 1 | 000000000 | 0000 |
M16 | 17.0 | 50.0 | 2.7-3.3 | Rockwell B75 | DIN 9021 | 1 | 000000000 | 0000 |
M18 | 20.0 | 56.0 | 3.4-4.6 | Rockwell B75 | DIN 9021 | 1 | 000000000 | 0000 |
M20 | 22.0 | 60.0 | 3.4-4.6 | Rockwell B75 | DIN 9021 | 1 | 000000000 | 0000 |
Bumax 88 Stainless Steel | ||||||||
M6 | 6.4 | 18.0 | 1.4-1.8 | Rockwell B91 | DIN 9021, ISO 7093 | 5 | 000000000 | 00000 |
M8 | 8.4 | 24.0 | 1.8-2.2 | Rockwell B91 | DIN 9021, ISO 7093 | 5 | 000000000 | 00000 |
M10 | 10.5 | 30.0 | 2.3-2.7 | Rockwell B91 | DIN 9021, ISO 7093 | 1 | 000000000 | 0000 |
M12 | 13.0 | 37.0 | 2.7-3.3 | Rockwell B91 | DIN 9021, ISO 7093 | 1 | 000000000 | 00000 |
Metric Plastic Washers
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These plastic washers are good electrical insulators.
Nylon washers are stronger than polycarbonate and UHMW washers. Exposure to moisture may cause them to expand.
For technical drawings and 3-D models, click on a part number.
Temperature Range, °F | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
For Screw Size | ID, mm | OD, mm | Thick., mm | Min. | Max. | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
Nylon Plastic | ||||||||||
Off-White | ||||||||||
M2 | 2.2 | 7.0 | 0.6-1.0 | -40° | 220° | Rockwell R120 | DIN 9021 | 25 | 000000000 | 00000 |
M2.5 | 2.7 | 8.0 | 0.7-0.9 | -40° | 220° | Rockwell R120 | DIN 9021 | 25 | 000000000 | 00000 |
M3 | 3.2 | 9.0 | 0.6-0.9 | -40° | 220° | Rockwell R120 | DIN 9021 | 25 | 000000000 | 00000 |
M4 | 4.3 | 12.0 | 0.9-1.1 | -40° | 220° | Rockwell R120 | DIN 9021 | 25 | 000000000 | 00000 |
M5 | 5.3 | 15.0 | 1.0-1.4 | -40° | 220° | Rockwell R120 | DIN 9021 | 25 | 000000000 | 00000 |
M10 | 10.5 | 30.0 | 2.3-2.7 | -40° | 220° | Rockwell R120 | DIN 9021 | 10 | 000000000 | 00000 |
M12 | 13.0 | 37.0 | 2.7-3.3 | -40° | 220° | Rockwell R120 | DIN 9021 | 10 | 000000000 | 00000 |