| Screw Thread | 1-1/2 | ||
| D | 1.5 | ||
| P | 6 | ||
| B | Min | L≤10 | 3.25 |
| B | Min | 10＜L≤16 | 3.5 |
| B | Min | L＞16 | 4 |
| U | Max | UNC | 0.333 |
| U | Max | UNF | 0.167 |
| U | Max | BUN | 0.25 |
| Ds | Max | 1.5 | |
| Ds | Min | UNC | 1.479 |
| Ds | Min | UNF | 1.487 |
| Ds | Min | BUN | 1.483 |
| Ds1 | Max | UNC | 1.479 |
| Ds1 | Max | UNF | 1.487 |
| Ds1 | Max | BUN | 1.483 |
| Ds1 | Min | UNC | 1.381 |
| Ds1 | Min | UNF | 1.438 |
| Ds1 | Min | BUN | 1.409 |