| Screw Thread | 3/8 | ||
| D | 0.3750 | ||
| P | 16 | ||
| B | Min | L≤10 | 1.000 |
| B | Min | 10＜L≤16 | 1.250 |
| B | Min | L＞16 | 1.750 |
| U | Max | UNC | 0.125 |
| U | Max | UNF | 0.083 |
| U | Max | BUN | None |
| Ds | Max | 0.3750 | |
| Ds | Min | UNC | 0.364 |
| Ds | Min | UNF | 0.367 |
| Ds | Min | BUN | None |
| Ds1 | Max | UNC | 0.364 |
| Ds1 | Max | UNF | 0.367 |
| Ds1 | Max | BUN | None |
| Ds1 | Min | UNC | 0.329 |
| Ds1 | Min | UNF | 0.343 |
| Ds1 | Min | BUN | None |