Square Head Bolts
ASME B 18.2.1 - 2010
Display drawing:
| Screw Thread | 1 | ||
| D | 1 | ||
| PP | UNC | 8 | |
| Ds | Max | 1.022 | |
| Ds | Min | 0.976 | |
| S | Basic | 1-1/2 | |
| S | Max | 1.500 | |
| S | Min | 1.450 | |
| E | Max | 2.121 | |
| E | Min | 1.991 | |
| K | Basic | 21/32 | |
| K | Max | 0.684 | |
| K | Min | 0.628 | |
| R | Max | 0.09 | |
| R | Min | 0.03 | |
| B | L≤6 | 2.250 | |
| B | L＞6 | 2.500 | |