| Screw Thread | 1 | ||
| D | 1.0000 | ||
| P | 8 | ||
| B | Min | L≤10 | 2.250 |
| B | Min | 10＜L≤16 | 2.500 |
| B | Min | L＞16 | 3.000 |
| U | Max | UNC | 0.250 |
| U | Max | UNF | 0.167 |
| U | Max | BUN | None |
| Ds | Max | 1.0000 | |
| Ds | Min | UNC | 0.983 |
| Ds | Min | UNF | 0.987 |
| Ds | Min | BUN | None |
| Ds1 | Max | UNC | 0.983 |
| Ds1 | Max | UNF | 0.987 |
| Ds1 | Max | BUN | None |
| Ds1 | Min | UNC | 0.910 |
| Ds1 | Min | UNF | 0.938 |
| Ds1 | Min | BUN | None |