Square Head Bolts
ASME B 18.2.1 - 2010
Display drawing:
| Screw Thread | 5/16 | ||
| D | 0.3125 | ||
| PP | UNC | 18 | |
| Ds | Max | 0.324 | |
| Ds | Min | 0.298 | |
| S | Basic | 1/2 | |
| S | Max | 0.500 | |
| S | Min | 0.484 | |
| E | Max | 0.707 | |
| E | Min | 0.665 | |
| K | Basic | 13/64 | |
| K | Max | 0.220 | |
| K | Min | 0.186 | |
| R | Max | 0.03 | |
| R | Min | 0.01 | |
| B | L≤6 | 0.875 | |
| B | L＞6 | 1.125 | |