ANSI/ASME B 18.2.1 – 2012 – Bu lông kết cấu
Thread Size | 43862 | 44048 | 43924 | 44050 | 1 | 39448 | 37987 | 39508 | 37257 | |
d | 0.5000 | 0.6250 | 0.7500 | 0.8750 | 10.000 | 11.250 | 12.500 | 13.750 | 15.000 | |
P | Thread Pitch | 13 | 11 | 10 | 9 | 8 | 7 | 7 | 6 | 6 |
ds | max | 0.515 | 0.642 | 0.768 | 0.895 | 1.022 | 1.149 | 1.277 | 1.404 | 1.531 |
min | 0.482 | 0.605 | 0.729 | 0.852 | 0.976 | 1.098 | 1.223 | 1.345 | 1.470 | |
s | Nominal Size | 07-Thg8 | 1 1/16 | 1 1/4 | 1 7/16 | 1 5/8 | 1 13/16 | 2 | 2 3/16 | 2 3/8 |
max | 0.875 | 1.062 | 1.250 | 1.438 | 1.625 | 1.812 | 2.000 | 2.188 | 2.375 | |
min | 0.850 | 1.031 | 1.212 | 1.394 | 1.575 | 1.756 | 1.938 | 2.119 | 2.300 | |
e | max | 1.010 | 1.227 | 1.443 | 1.660 | 1.876 | 2.093 | 2.309 | 2.526 | 2.742 |
min | 0.969 | 1.175 | 1.383 | 1.589 | 1.796 | 2.002 | 2.209 | 2.416 | 2.622 | |
k | Nominal Size | Thg5-16 | 25/64 | 15/32 | 35/64 | 39/64 | Thg11-16 | 25/32 | 27/32 | 15/16 |
max | 0.323 | 0.403 | 0.483 | 0.563 | 0.627 | 0.718 | 0.813 | 0.878 | 0.974 | |
min | 0.302 | 0.378 | 0.455 | 0.531 | 0.591 | 0.658 | 0.749 | 0.810 | 0.902 | |
b | Ref. | 1.00 | 1.25 | 1.38 | 1.50 | 1.75 | 2.00 | 2.00 | 2.25 | 2.25 |
Length of Thread b | – | – | – | – | – | – | – | – | – |