J995 Mechanical Properties
| Grade | Nominal Size, inches | Proofload, UNC and UN 8 Threads, psi | Rockwell Hardness |
|---|---|---|---|
| 2 | 1/4 thru 1-1/2 | 90,000 | C32 Max |
| 5 | 1/4 thru 1 | 120,000 | C32 Max |
| Over 1 thru 1-1/2 | 105,000 | C32 Max | |
| 8 | 1/4 thru 5/8 | 150,000 | C24-C32 |
| Over 5/8 thru 1 | 150,000 | C26-C34 | |
| Over 1 thru 1-1/2 | 150,000 | C26-C36 | |
| *Values listed are not normally applicable to jam, slotted, castle, heavy or thick nuts. | |||