ASME B 18.2.2 - 2022
Display drawing:
| Screw Thread | 1/4 | ||
| D | 0.25 | ||
| PP | UNC | 20 | |
| PP | UNF | 28 | |
| PP | 8UN | None | |
| S | Nominal | 7/16 | |
| S | Min | 0.428 | |
| S | Max | 0.438 | |
| E | Min | 0.488 | |
| E | Max | 0.505 | |
| M | Nominal | 7/32 | |
| M | Min | 0.212 | |
| M | Max | 0.226 | |
| W | Min | 0.12 | |
| W | Max | 0.14 | |
| N | Min | 0.07 | |
| N | Max | 0.10 | |