美制粗螺纹英制管螺纹规格UNC外径2级牙钻孔径规格标准径钻孔径标准径最大最小最大最小N0.1-64(1.854)1.551.5821.452PS116-286.56.6326.49N0.2-56(2.184)1.81.8711.695PS18-288.58.6878.495N0.348(2.515)2.12.1461.941Ps14-1911.411.54911.341N0.440(2.845)2.32.3852.157PS38-191515.05414.846N0.540(3.173)2.62.6792.487PS12-1418.518.73318.489N0.6-323.505)2.82.8952.642PS34-142424.25923.975N0.8-32(4.166)3.43.533.302PS14-1130.230.47130.111N0.10-24(4.826)3.93.9623.683PS1-14-1138.839.13238.772N0.12-24(5.486)4.54.5974.344PS1-12-1144.845.02544.66514-205.15.2574.979PS2-12-1156.556.83656.4766.66.7316.40138-1688.1537.793英制管螺纹7八16-149.49.559.144规格标准径标准长度之12-1310.811.02310.592使用较刀时不用铰刀时螺牙内径916-1212.212.44611.989PT116-286.16.26.38458-1113.612.86813.386PT18-288.188.38834-1016.518.8416.307PT14-1910.71111.1747八8-919.519.76119.507PT38-1914.214.514.68518-822.222.60621.971PT12-1417.61318.2631-18-72525.34924.6398PT34-142323.523.6631-14-728.228.52427.813PT14-112929.529.8221-38-630.831.11530.353PT1-14-1137.53838.3391-12-63434.2933.528PT1-12-1143.44444.2321-34-539.539.82738.964PT2-2-1154.955.555.84414-1245.245.59344.679