公制螺距选用三针0.200.1180.250.1420.300.1700.350.2010.400.2320.450.2600.500.2910.600.3430.700.4020.750.4330.800.4611.000.5721.250.7241.500.8661.751.0082.001.1572.501.4413.001.7323.502.0204.002.3114.502.5955.002.8665.503.1776.003.468
英美制螺距牙数/吋选用三针43.66.53.28752.86662.31172.02081.59191.441101.302111.302121.157131.047140.866160.796180.796200.724220.724240.572260.572280.511320.461360.402400.343480.29156
0.260
