| Screw Thread | 1-1/8 | ||
| D | 1.125 | ||
| P | 7 | ||
| B | Min | L≤10 | 2.5 |
| B | Min | 10＜L≤16 | 2.75 |
| B | Min | L＞16 | 3.25 |
| U | Max | UNC | 0.286 |
| U | Max | UNF | 0.167 |
| U | Max | BUN | 0.25 |
| Ds | Max | 1.125 | |
| Ds | Min | UNC | 1.106 |
| Ds | Min | UNF | 1.112 |
| Ds | Min | BUN | 1.108 |
| Ds1 | Max | UNC | 1.106 |
| Ds1 | Max | UNF | 1.112 |
| Ds1 | Max | BUN | 1.108 |
| Ds1 | Min | UNC | 1.023 |
| Ds1 | Min | UNF | 1.063 |
| Ds1 | Min | BUN | 1.035 |