Specifications Met Specifications Met | Hide |
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System of Measurement System of Measurement |
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OD OD |
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ID ID |
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Material Material |
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Washer Type Washer Type |
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Thickness Thickness |
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Hardness Hardness |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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About Washers
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Metric Oversized Washers
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.
These washers meet various DIN and ISO specifications, which are international standards for washer dimensions. ISO 8738 is formerly DIN 1440.ISO 7093 is formerly DIN 9021.
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. 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.
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. | |
Zinc-Plated Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| M2.5 | 2.7 | 8.0 | 0.7-0.9 | Rockwell B56 | DIN 9021 | 100 | 000000000 | 00000 |
| 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 |
Black Ultra-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 | 0000 |
| 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 | 2.2 | 7.0 | 0.6-1.0 | Rockwell B75 | DIN 9021 | 100 | 000000000 | 0000 |
| 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 | 0000 |
| M7 | 7.4 | 22.0 | 1.8-2.2 | Rockwell B75 | DIN 9021 | 25 | 000000000 | 0000 |
| M8 | 8.4 | 24.0 | 1.8-2.2 | Rockwell B52 | DIN 9021 | 25 | 000000000 | 0000 |
| 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 |
| 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 B52 | DIN 9021 | 5 | 000000000 | 00000 |
| 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 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 | ||||||||
| M2 | 2.2 | 7.0 | 0.6-1.0 | Rockwell C40 | DIN 9021 | 10 | 000000000 | 00000 |
| M2.5 | 2.7 | 8.0 | 0.7-0.9 | Rockwell C40 | DIN 9021 | 10 | 000000000 | 00000 |
| M3 | 3.2 | 9.0 | 0.7-0.9 | Rockwell C40 | DIN 9021 | 10 | 000000000 | 00000 |
| M4 | 4.3 | 14.0 | 2.5-3.4 | Rockwell C40 | DIN 9021 | 1 | 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 |
Black-Oxide 18-8 Stainless Steel | ||||||||
| M2 | 2.2 | 7.0 | 0.6-1.0 | Rockwell B68 | DIN 9021 | 10 | 000000000 | 00000 |
| 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 | 0000 |
| 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 | ||||||||
| M2 | 2.2 | 7.0 | 0.6-1.0 | Rockwell B75 | DIN 9021 | 100 | 000000000 | 0000 |
| 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 |
| M24 | 26.8 | 72.0 | 4.0-6.0 | Rockwell B68 | 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 | 0000 |
| M8 | 8.4 | 24.0 | 1.8-2.2 | Rockwell B91 | DIN 9021, ISO 7093 | 5 | 000000000 | 0000 |
| 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 | 0000 |