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General Purpose Washers
![](/prerenderstable/mvPRE/contents/gfx/imagecache/901/90107a029p1-b01-digitall@halfx_636923080856299297.png?ver=imagenotfound)
Use these washers to evenly distribute the load under bolt or screw heads and nuts when fastening. They can also act as spacers.
Zinc yellow-chromate and chrome-plated steel washers are corrosion resistant in wet environments.
SAE washers generally have a smaller ID and OD than USS washers.
For technical drawings and 3-D models, click on a part number.
For Screw Size | ID | OD | Thick. | Hardness | Washer Designation | Specifications Met | Pkg. Qty. | Pkg. | |
Zinc Yellow-Chromate Plated Grade 9 Steel | |||||||||
---|---|---|---|---|---|---|---|---|---|
1/4" | 0.286" | 0.640" | 0.056" to 0.071" | Rockwell C40 | __ | ASME B18.21.1 | 50 | 000000000 | 00000 |
5/16" | 0.349" | 0.703" | 0.056" to 0.071" | Rockwell C40 | __ | ASME B18.21.1 | 50 | 000000000 | 00000 |
3/8" | 0.411" | 0.827" | 0.090" to 0.112" | Rockwell C40 | __ | __ | 25 | 000000000 | 00000 |
7/16" | 0.474" | 0.937" | 0.090" to 0.112" | Rockwell C40 | __ | __ | 25 | 000000000 | 00000 |
1/2" | 0.541" | 1.092" | 0.090" to 0.112" | Rockwell C40 | __ | ASME B18.21.1 | 10 | 000000000 | 0000 |
9/16" | 0.599" | 1.186" | 0.090" to 0.112" | Rockwell C40 | SAE | ASME B18.21.1 | 10 | 000000000 | 0000 |
5/8" | 0.661" | 1.342" | 0.146" to 0.174" | Rockwell C40 | __ | __ | 10 | 000000000 | 0000 |
3/4" | 0.819" | 1.499" | 0.146" to 0.174" | Rockwell C40 | __ | __ | 5 | 000000000 | 0000 |
7/8" | 0.945" | 1.780" | 0.146" to 0.174" | Rockwell C40 | SAE | __ | 5 | 000000000 | 00000 |
1" | 1.069" | 2.030" | 0.146" to 0.174" | Rockwell C40 | SAE | __ | 1 | 000000000 | 0000 |
1 1/8" | 1.195" | 2.030" | 0.234" to 0.266" | Rockwell C40 | SAE | __ | 1 | 000000000 | 0000 |
1 1/4" | 1.319" | 2.280" | 0.234" to 0.266" | Rockwell C40 | SAE | __ | 1 | 000000000 | 0000 |
1 1/2" | 1.572" | 2.780" | 0.234" to 0.266" | Rockwell C40 | SAE | __ | 1 | 000000000 | 0000 |
USS Washers
![](/prerenderstable/mvPRE/contents/gfx/imagecache/938/93852a104p1-b01-digitall@halfx_636840301547196416.png?ver=imagenotfound)
USS washers generally have a larger ID and OD than SAE washers.
For technical drawings and 3-D models, click on a part number.
For Screw Size | ID | OD | Thick. | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
Zinc Yellow-Chromate Plated Grade 9 Steel | ||||||||
---|---|---|---|---|---|---|---|---|
1/4" | 0.266" | 0.760" | 0.065"-0.080" | Rockwell C43 | ASME B18.21.1 | 10 | 000000000 | 00000 |
5/16" | 0.329" | 0.885" | 0.079"-0.093" | Rockwell C43 | ASME B18.21.1 | 10 | 000000000 | 0000 |
3/8" | 0.391" | 1.010" | 0.079"-0.093" | Rockwell C43 | ASME B18.21.1 | 10 | 000000000 | 00000 |
7/16" | 0.454" | 1.260" | 0.090"-0.106" | Rockwell C43 | ASME B18.21.1 | 5 | 000000000 | 0000 |
1/2" | 0.521" | 1.385" | 0.122"-0.146" | Rockwell C43 | ASME B18.21.1 | 1 | 000000000 | 0000 |
9/16" | 0.583" | 1.510" | 0.122"-0.146" | Rockwell C43 | ASME B18.21.1 | 1 | 000000000 | 0000 |
5/8" | 0.641" | 1.760" | 0.136"-0.160" | Rockwell C43 | ASME B18.21.1 | 1 | 000000000 | 0000 |
3/4" | 0.770" | 2.015" | 0.136"-0.160" | Rockwell C43 | ASME B18.21.1 | 1 | 000000000 | 0000 |
7/8" | 0.891" | 2.265" | 0.136"-0.160" | Rockwell C43 | ASME B18.21.1 | 1 | 000000000 | 00000 |
1" | 1.081" | 2.515" | 0.136"-0.160" | Rockwell C43 | ASME B18.21.1 | 1 | 000000000 | 00000 |
1 1/4" | 1.365" | 3.030" | 0.168"-0.195" | Rockwell C43 | ASME B18.21.1 | 1 | 000000000 | 00000 |