Standard ASME B18.2.2 TABLE 1-1
Square and hex machine screw nuts

Dimensions in inches (1 inch=25.4 mm) sourceASME B18.2.2 table 1-1 Publication date: 2010 | ||||||||||
Nominal size or basic thread diameter | UNC (nr of threads x inch) | UNF (nr of threads x inch) | F basic | G min | G max | H min | H max | G1 min | G1 max | |
inch | mm | |||||||||
0 (0.060) | 1.52 | - | 80 | 0.156 | 0.206 | 0.221 | 0.043 | 0.050 | 0.171 | 0.180 |
1 (0.073) | ||||||||||
2 (0.086) | ||||||||||
3 (0.099) | ||||||||||
4 (0.112) | ||||||||||
5 (0.125) | ||||||||||
6 (0.138) | ||||||||||
8 (0.164) | ||||||||||
10 (0.190) | ||||||||||
12 (0.216) | ||||||||||
1/4 (0.250) | ||||||||||
5/16 (0.312) | ||||||||||
3/8 (0.375) |