Square Head Bolts
ASME B 18.2.1 - 2010
Display drawing:
| Screw Thread | 1/4 | ||
| D | 0.25 | ||
| PP | UNC | 20 | |
| Ds | Max | 0.260 | |
| Ds | Min | 0.237 | |
| S | Basic | 3/8 | |
| S | Max | 0.375 | |
| S | Min | 0.362 | |
| E | Max | 0.53 | |
| E | Min | 0.498 | |
| K | Basic | 11/64 | |
| K | Max | 0.188 | |
| K | Min | 0.156 | |
| R | Max | 0.03 | |
| R | Min | 0.01 | |
| B | L≤6 | 0.750 | |
| B | L＞6 | 1.000 | |