Standard ASME B18.2.1 TABLE 1
| Dimensions in inches (1 inch=25.4 mm) sourceASME B18.2.1 - Square Head Bolts Table 1 | ||||||||
| Publication date: 2010 | ||||||||
| d Thread size | UNC (nr of threads x inch) | UNF (nr of threads x inch) | H basic | E min | b (l< 6') | b (l> 6') | F basic | G basic |
| 1/4 | 20 | 28 | 11/64 | 0.237 | 0.75 | 1 | 3/8 | 0.498 |
| 5/16 | ||||||||
| 3/8 | ||||||||
| 7/16 | ||||||||
| 1/2 | ||||||||
| 5/8 | ||||||||
| 3/4 | ||||||||
| 7/8 | ||||||||
| 1 | ||||||||
| 1 1/8 | ||||||||
| 1 1/4 | ||||||||
| 1 3/8 | ||||||||
| 1 1/2 | ||||||||
 | |||||||||
| Dimensions in inches (1 inch=25.4 mm) sourceASME B18.2.1 - Askew Head Bolts Table 6 | |||||||||
| Publication date: 2010 | |||||||||
| d Thread size | UNC (nr of threads x inch) | UNF (nr of threads x inch) | H1 min | H ref | E min | LT (l< 6') | LT (l> 6') | G min | F basic |
| 3/8 | |||||||||
| 1/2 | |||||||||
| 5/8 | |||||||||
| 3/4 | |||||||||
| 7/8 | |||||||||
| 1 | |||||||||