Hex Flange Screws
ASME B 18.2.1 - 2010
Display drawing:
| Screw Thread | 1/4 | ||
| Thread Size | 1/4 | ||
| D | 0.25 | ||
| PP | UNC | 20 | |
| PP | UNF | 28 | |
| Ds | Max | 0.25 | |
| Ds | Min | 0.245 | |
| S | Basic | 3/8 | |
| S | Max | 0.375 | |
| S | Min | 0.367 | |
| E | Max | 0.433 | |
| E | Min | 0.409 | |
| Dc | Max | 0.56 | |
| C | Min | 0.04 | |
| K | Max | 0.28 | |
| B | L≤6 | 0.75 | |
| B | L＞6 | 1 | |
| R | Max | 0.025 | |
| R | Min | 0.015 | |