Our hex jam nuts are a true, solid 651 Silicon Bronze Alloy and comparable to our regular hex finish nuts but thinner. Two jam nuts are generally used at a time, and tightened against one another for a locking effect. Jam nuts are often also referred to as:
- Check Nuts
- Thin Hex Nuts
- Thin Nuts
Need an anti-seize and thread protectant for these nuts? Don't forget to add on some Fair Wind Screw Lube.
| Nominal Size | Width Across The Flats | Thickness |
| 1/4" | 7/16" | 5/32" |
| 5/16" | 1/2" | 3/16" |
| 3/8" | 9/16" | 7/32" |
| 1/2" | 3/4" | 5/16" |
| 5/8" | 1 5/16" | 3/8" |