For Screw Size For Screw Size |
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Washer Type Washer Type |
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| Flat | Split Lock |
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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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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About Washers
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General Purpose Washers
Copper, brass, and bronze washers are corrosion resistant in wet environments, nonmagnetic, and electrically conductive. Bronze washers are stronger than copper and brass.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Hardness | Pkg. Qty. | Pkg. | |
Bronze | |||||||
|---|---|---|---|---|---|---|---|
| No. 6 | 0.147" | 0.375" | 0.025"-0.039" | Not Rated | 100 | 000000000 | 00000 |
| No. 8 | 0.172" | 0.375" | 0.025"-0.039" | Not Rated | 100 | 000000000 | 0000 |
| No. 10 | 0.200" | 0.438" | 0.029"-0.043" | Not Rated | 100 | 000000000 | 0000 |
| No. 12 | 0.228" | 0.500" | 0.033"-0.047" | Not Rated | 50 | 000000000 | 00000 |
| 1/4" | 0.260" | 0.688" | 0.030"-0.050" | Not Rated | 50 | 000000000 | 00000 |
| 5/16" | 0.340" | 0.750" | 0.052"-0.072" | Not Rated | 25 | 000000000 | 00000 |
| 5/16" | 0.340" | 0.875" | 0.052"-0.072" | Not Rated | 10 | 000000000 | 0000 |
| 3/8" | 0.392" | 0.875" | 0.052"-0.072" | Not Rated | 25 | 000000000 | 00000 |
| 3/8" | 0.392" | 1.000" | 0.052"-0.072" | Not Rated | 10 | 000000000 | 0000 |
| 7/16" | 0.500" | 1.125" | 0.052"-0.072" | Not Rated | 10 | 000000000 | 00000 |
| 1/2" | 0.562" | 1.250" | 0.068"-0.088" | Not Rated | 10 | 000000000 | 00000 |
| 5/8" | 0.688" | 1.500" | 0.081"-0.101" | Not Rated | 5 | 000000000 | 00000 |
| 3/4" | 0.812" | 1.875" | 0.092"-0.112" | Not Rated | 1 | 000000000 | 0000 |
| 7/8" | 0.938" | 2.250" | 0.099"-0.129" | Not Rated | 1 | 000000000 | 0000 |
| 1" | 1.062" | 2.500" | 0.113"-0.143" | Not Rated | 1 | 000000000 | 00000 |
Split Lock Washers
As a screw is tightened, these washers flatten to add tension to the joint and prevent loosening from small amounts of vibration.
Bronze washers are corrosion resistant in wet environments, nonmagnetic, and electrically conductive.
Washers that meet ASME B18.21.1 adhere to strict dimensional standards.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
Bronze | ||||||||
|---|---|---|---|---|---|---|---|---|
| No. 2 | 0.094" | 0.172" | 0.020" | Rockwell B90 | ASME B18.21.1 | 100 | 000000000 | 00000 |
| No. 3 | 0.107" | 0.195" | 0.025" | Rockwell B90 | ASME B18.21.1 | 100 | 000000000 | 0000 |
| No. 4 | 0.114" | 0.209" | 0.025" | Rockwell B90 | ASME B18.21.1 | 1,000 | 000000000 | 00000 |
| No. 4 | 0.120" | 0.209" | 0.025" | Rockwell B90 | ASME B18.21.1 | 100 | 000000000 | 0000 |
| No. 6 | 0.141" | 0.250" | 0.031" | Rockwell B90 | ASME B18.21.1 | 1,000 | 000000000 | 00000 |
| No. 6 | 0.148" | 0.250" | 0.031" | Rockwell B90 | ASME B18.21.1 | 100 | 000000000 | 0000 |
| No. 8 | 0.167" | 0.293" | 0.040" | Rockwell B90 | ASME B18.21.1 | 1,000 | 000000000 | 00000 |
| No. 8 | 0.174" | 0.293" | 0.040" | Rockwell B90 | ASME B18.21.1 | 100 | 000000000 | 0000 |
| No. 10 | 0.200" | 0.334" | 0.047" | Rockwell B90 | ASME B18.21.1 | 100 | 000000000 | 0000 |
| No. 12 | 0.227" | 0.377" | 0.056" | Rockwell B90 | ASME B18.21.1 | 100 | 000000000 | 0000 |
| 1/4" | 0.260" | 0.487" | 0.062" | Rockwell B90 | ASME B18.21.1 | 100 | 000000000 | 00000 |
| 5/16" | 0.322" | 0.583" | 0.078" | Rockwell B90 | ASME B18.21.1 | 50 | 000000000 | 00000 |
| 3/8" | 0.385" | 0.680" | 0.094" | Rockwell B90 | ASME B18.21.1 | 25 | 000000000 | 00000 |
| 7/16" | 0.450" | 0.776" | 0.109" | Rockwell B90 | ASME B18.21.1 | 10 | 000000000 | 0000 |
| 1/2" | 0.512" | 0.869" | 0.125" | Rockwell B90 | ASME B18.21.1 | 10 | 000000000 | 0000 |
| 5/8" | 0.641" | 1.073" | 0.156" | Rockwell B90 | ASME B18.21.1 | 5 | 000000000 | 0000 |
| 3/4" | 0.766" | 1.265" | 0.188" | Rockwell B90 | ASME B18.21.1 | 5 | 000000000 | 00000 |
| 1" | 1.003" | 1.656" | 0.250" | Rockwell B90 | ASME B18.21.1 | 5 | 000000000 | 00000 |