Normal sized hex finish nuts in a true 655 Silicon Bronze alloy.
If heavy nuts are required for your application (recommended on keel bolts for example) they can be found here.
| Nominal Size | Width Across The Flats | Thickness |
| 1/4 | 7/16 | 7/32 |
| 5/16 | 1/2 | 17/64 |
| 3/8 | 9/16 | 21/64 |
| 7/16 | 11/16 | 3/8 |
| 1/2 | 3/4 | 7/16 |
| 9/16 | 7/8 | 31/64 |
| 5/8 | 1 5/16 | 35/64 |
| 3/4 | 1 1/8 | 41/64 |
| 7/8 | 1 5/16 | 3/4 |
| 1 | 1 1/2 | 55/64 |
| 1 1/8 | 1 11/16 | 31/32 |
| 1 1/4 | 1 7/8 | 1 1/16 |
| 1 3/8 | 2 1/16 | 1 11/64 |
| 1-1/2 | 2 1/4 | 1 9/32 |