Washers are made on automatic machinery from C360 brass and 12L14 steel bar stock.
| Screw Size | Outside Diameter | Thickness |
| 0 | 1/8" | 0.015" |
| 1 | 5/32" | 0.02" |
| 2 | 3/16" | 0.025" |
| 3 | 7/32" | 0.03" |
| 4 | 1/4" | 0.035" |
| 5 | 9/32" | 0.04" |
| 6 | 5/16" | 0.045" |
| 8 | 11/32" | 0.05" |
| 10 | 3/8" | 0.055" |