Thick, heavy-duty washer.
| Steel | |||||
| Item | Material | Heat Treat | Finish | DFARS | RoHS |
| Washer | 1010 Steel | Carburized-Hardened | Black Oxide | Yes | Yes |
| Stainless Steel | |||||
| Item | Material | Heat Treat | Finish | DFARS | RoHS |
| Washer | 300-series stainless steel | - | Passivated | Yes | Yes |

| Bolt Size | A Diameter | B Diameter | C |
| 5/16 or M8 | 5/8 | 11/32 | 3/32 |