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USS Washer
A standard flat washer designed to meet many different applications. These washers are used with fasteners to help span clearance holes and to distribute the load from tightening. USS stands for United States Standard.
Dimensions
ASME B18.21.1
| Nominal Dia. | ID | OD | Thickness |
|---|---|---|---|
| 3/16 | 1/4 | 9/16 | 3/64 |
| 1/4 | 5/16 | 3/4 | 1/16 |
| 5/16 | 3/8 | 7/8 | 5/64 |
| 3/8 | 7/16 | 1 | 5/64 |
| 7/16 | 1/2 | 1 1/4 | 5/64 |
| 1/2 | 9/16 | 1 3/8 | 7/64 |
| 9/16 | 5/8 | 1 1/2 | 7/64 |
| 5/8 | 11/16 | 1 3/4 | 9/64 |
| 3/4 | 13/16 | 2 | 5/32 |
| 7/8 | 15/16 | 2 1/4 | 11/64 |
| 1 | 1 1/16 | 2 1/2 | 11/64 |
| 1 1/8 | 1 1/4 | 2 3/4 | 11/64 |
| 1 1/4 | 1 3/8 | 3 | 11/64 |
| 1 3/8 | 1 1/2 | 3 1/4 | 3/16 |
| 1 1/2 | 1 5/8 | 3 1/2 | 3/16 |
| 1 5/8 | 1 3/4 | 3 3/4 | 3/16 |
| 1 3/4 | 1 7/8 | 4 | 3/16 |
| 1 7/8 | 2 | 4 1/4 | 3/16 |
| 2 | 2 1/8 | 4 1/2 | 3/16 |
| 2 1/4 | 2 3/8 | 4 3/4 | 7/32 |
| 2 1/2 | 2 5/8 | 5 | 15/64 |
| 2 3/4 | 2 7/8 | 5 1/4 | 1/4 |
| 3 | 3 1/8 | 5 1/2 | 5/32 |