STANDARD AND STOCK SIZE HEX MACHINE SCREW NUTS
| Thread | Hex | "T" - Thickness |
| 2-56 | 3/16 | 1/16 |
| 4-40 | 1/4 | 3/32 |
| 6-32 | 5/16 | 7/64 |
| 8-32 | 11/32 | 1/8 |
| 10-32 | 3/8 | 1/8 |
| 1/4-20 | 7/16 | 3/16 |
| 1/4-28 | 7/16 | 3/16 |
| 5/16-18 | 1/2 | 17/64 |
| 3/8-16 | 5/8 | 21/64 |
| 3/8-24 | 5/8 | 21/64 |
| 1/2-13 | 3/4 | 7/16 |
| 1/2-20 | 3/4 | 7/16 |
| 5/8-11 | 15/16 | 35/64 |
| 5/8-18 | 15/16 | 35/64 |
| 3/4-10 | 1-1/8 | 41/64 |
| 3/4-16 | 1-1/8 | 41/64 |