ANSI B1.1 螺距对照表 | |||||
公称直径 | 粗牙螺距 | 细牙螺距 | 超细牙螺距 | 钻孔直径 | 钻孔直径 |
#0 0.060 〖1.524〗 | 80 | 1.2 | |||
#1 0.073 〖1.854〗 | 64 | 72 | 1.5 | 1.5 | |
#2 0.086 〖2.184〗 | 56 | 64 | 1.8 | 1.8 | |
#3 0.099 〖2.515〗 | 48 | 56 | 2.0 | 2.1 | |
#4 0.112 〖2.845〗 | 40 | 48 | 2.3 | 2.4 | |
#5 0.125 〖3.175〗 | 40 | 44 | 2.5 | 2.6 | |
#6 0.138 〖3.505〗 | 32 | 40 | 2.7 | 2.9 | |
#8 0.164 〖4.166〗 | 32 | 36 | 3.4 | 3.5 | |
#10 0.190 〖4.826〗 | 24 | 32 | 3.7 | 4.0 | |
#12 0.216 〖5.486〗 | 24 | 28 | 32 | 4.5 | 4.6 |
1/4 〖6.35〗 | 20 | 28 | 32 | 5.1 | 5.4 |
5/16 〖7.938〗 | 18 | 24 | 32 | 6.5 | 6.9 |
3/8 〖9.525〗 | 16 | 24 | 32 | 8.0 | 8.4 |
7/16 〖11.113〗 | 14 | 20 | 28 | 9.3 | 10.0 |
1/2 〖12.7〗 | 13 | 20 | 28 | 10.7 | 11.5 |
9/16 〖14.288〗 | 12 | 18 | 24 | 12.3 | 13.1 |
5/8 〖15.875〗 | 11 | 18 | 24 | 13.5 | 14.7 |
3/4 〖19.05〗 | 10 | 16 | 20 | 16.7 | 17.5 |
7/8 〖22.225〗 | 9 | 14 | 20 | 19.4 | 20.6 |
1 〖25.4〗 | 8 | 12 | 20 | 22.2 | 23.4 |