Material Material |
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Finish Finish |
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Washer Type Washer Type |
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OD OD |
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ID ID |
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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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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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About Washers
More
Metric General Purpose Washers
Use these metric washers to evenly distribute the load under bolt or screw heads and nuts when fastening. They can also act as spacers.
Stainless steel washers are more corrosion resistant than steel washers, and almost as strong.Stronger and slightly more corrosion resistant than 316 stainless steel, Bumax 109 stainless steel washers are best for marine environments and chemical-processing plants. Zinc-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.
Washers that meet ISO 7089, 7090, 7091, and 7092 (formerly DIN 125, 126, and 433), meet international standards for fastener dimensions.
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. | |
Bumax 109 Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| M6 | 6.4 | 12.0 | 1.4-1.8 | Rockwell C30 | DIN 125, ISO 7089 | 10 | 000000000 | 00000 |
| M8 | 8.4 | 16.0 | 1.4-1.8 | Rockwell C30 | DIN 125, ISO 7089 | 10 | 000000000 | 0000 |
| M10 | 10.5 | 20.0 | 1.8-2.2 | Rockwell C30 | DIN 125, ISO 7089 | 5 | 000000000 | 0000 |
| M12 | 13.0 | 24.0 | 2.3-2.7 | Rockwell C30 | DIN 125, ISO 7089 | 5 | 000000000 | 00000 |
Zinc-Plated Class 10.9 Steel | ||||||||
| M6 | 6.4 | 12.0 | 1.4-1.8 | Rockwell C30 | DIN 125, ISO 7089 | 100 | 000000000 | 00000 |
| M8 | 8.4 | 16.0 | 1.4-1.8 | Rockwell C30 | DIN 125, ISO 7089 | 50 | 000000000 | 0000 |
| M10 | 10.5 | 20.0 | 1.8-2.2 | Rockwell C30 | DIN 125, ISO 7089 | 50 | 000000000 | 00000 |
| M12 | 13.0 | 24.0 | 2.3-2.7 | Rockwell C30 | DIN 125, ISO 7089 | 25 | 000000000 | 0000 |
| M14 | 15.0 | 28.0 | 2.3-2.7 | Rockwell C30 | DIN 125, ISO 7089 | 25 | 000000000 | 00000 |
| M16 | 17.0 | 30.0 | 2.7-3.3 | Rockwell C30 | DIN 125, ISO 7089 | 25 | 000000000 | 00000 |
| M20 | 21.0 | 37.0 | 2.7-3.3 | Rockwell C30 | DIN 125, ISO 7089 | 10 | 000000000 | 0000 |
| M24 | 25.0 | 44.0 | 3.7-4.3 | Rockwell C30 | DIN 125, ISO 7089 | 10 | 000000000 | 00000 |
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.
Blue-dyed steel washers have a unique color so you can tell they're metric at a glance.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID, mm | OD, mm | Thick., mm | Hardness | Pkg. Qty. | Pkg. | |
Blue-Dyed Steel | |||||||
|---|---|---|---|---|---|---|---|
| M6 | 7.0 | 13.6 | 2.7-4.0 | Rockwell C38 | 25 | 000000000 | 000000 |
| M8 | 9.0 | 17.0 | 2.5-3.5 | Rockwell C38 | 50 | 000000000 | 00000 |
| M10 | 11.0 | 21.5 | 3.0-4.5 | Rockwell C38 | 25 | 000000000 | 00000 |
| M12 | 14.0 | 27.0 | 3.1-4.8 | Rockwell C38 | 10 | 000000000 | 0000 |
| M16 | 18.0 | 34.0 | 3.1-4.6 | Rockwell C38 | 5 | 000000000 | 0000 |
| M20 | 22.0 | 42.0 | 3.1-4.6 | Rockwell C38 | 5 | 000000000 | 0000 |
| M24 | 26.0 | 50.0 | 3.4-4.6 | Rockwell C38 | 5 | 000000000 | 00000 |
| M30 | 33.0 | 60.0 | 3.4-4.6 | Rockwell C38 | 1 | 000000000 | 0000 |
| M36 | 39.0 | 72.0 | 3.4-4.6 | Rockwell C38 | 1 | 000000000 | 0000 |
Metric Split Lock Washers
As you tighten a bolt, these metric washers flatten to add tension to the threaded joint and prevent loosening from small amounts of vibration. All of these washers meet a DIN or ASME standard for split lock washer dimensions.
Standard split lock washers have a left-hand helix, which means you can only use them with bolts that have right-hand threads to prevent clockwise rotation from vibration. When tightened, their uneven split ends bite into unhardened nuts and bolts for a tighter hold than curved or wave washers, but only for applications with clockwise rotation. The washers, nuts, and bolts will be deformed when untightened, so none of them can be reused. Do not use these washers on hardened surfaces.
Steel washers are stronger and more wear resistant than zinc-plated steel and stainless steel. Use them in dry environments because they will rust in wet and corrosive environments. Blue-dyed steel washers are easy to spot.
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. | |
Blue-Dyed Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
Standard | ||||||||
| M6 | 6.2 | 12.1 | 2.0 | Rockwell C38 | ASME B18.21.2M | 100 | 000000000 | 00000 |
| M8 | 8.2 | 15.2 | 2.5 | Rockwell C38 | ASME B18.21.2M | 100 | 000000000 | 0000 |
| M10 | 10.2 | 18.0 | 2.9 | Rockwell C38 | ASME B18.21.2M | 50 | 000000000 | 0000 |
| M12 | 12.3 | 21.7 | 3.8 | Rockwell C38 | ASME B18.21.2M | 100 | 000000000 | 00000 |
| M16 | 16.4 | 27.9 | 4.8 | Rockwell C38 | ASME B18.21.2M | 25 | 000000000 | 00000 |
| M20 | 20.5 | 33.8 | 5.7 | Rockwell C38 | ASME B18.21.2M | 10 | 000000000 | 0000 |
| M24 | 24.5 | 40.7 | 7.2 | Rockwell C38 | ASME B18.21.2M | 10 | 000000000 | 00000 |