- Case hardened steel
- Black oxide finish
- UNC threads
- When used with Spherical Washers, Flange Nuts will equalize thread loads
| ThreadA | ThreadB | ThreadC | ThreadD | ThreadE | Order Number | Order Now |
| 1/4-20 | 5/8″ | 5/16″ | 3/32″ | 1/2″ | 41601 | |
| 5/16-18 | 3/4 | 3/8 | 1/8 | 9/16 | 41602 | |
| 3/8-16 | 7/8 | 1/2 | 1/8 | 11/16 | 41603 | |
| 7/16-14 | 1 | 9/16 | 5/32 | 3/4 | 41604 | |
| 1/2-13 | 1-1/8 | 11/16 | 3/16 | 7/8 | 41605 | |
| 5/8-11 | 1-3/8 | 13/16 | 3/16 | 1-1/16 | 41606 | |
| 3/4-10 | 1-5/8 | 1 | 1/4 | 1-1/4 | 41607 | |
| 7/8-9 | 1-3/4 | 1-1/8 | 1/4 | 1-7/16 | 41608 | |
| 1-8 | 2 | 1-1/4 | 1/4 | 1-5/8 | 41609 | |
| 1-1/4-7 | 2-1/2 | 1-1/4 | 1/4 | 1-13/16 | 41611 |