很有用的東東，大家看看

公制粗螺紋
規格 標準徑 最大 最小
M1.0*0.25 0.75 0.785 0.729
M1.1*0.25 0.85 0.885 0.829
M1.2*0.25 0.95 0.985 0.929
M1.4*0.3 1.1 1.142 1.075
M1.6*0.35 1.25 1.321 1.221
M1.7*0.35 1.35 1.421 1.321
M1.8*0.35 1.45 1.521 1.421
M2.0*0.4 1.6 1.679 1.567
M2.2*0.45 1.75 1.888 1.713
M2.3*0.4 1.9 1.979 1.867
M2.5*0.45 2.1 2.138 2.013
M2.6*0.45 2.2 2.238 2.113
M3.0*0.5 2.5 2.599 2.459
M3.0*0.6 2.4 2.44 2.28
M3.5*0.6 2.9 3.01 2.85
M4.0*0.7 3.8 3.422 3.242
M4.0*0.75 3.25 3.326 3.106
M4.5*0.7 3.8 3.878 3.688
M5*0.8 4.2 4.334 4.134
M5*0.9 4.1 4.17 3.98
M6*1.0 5 5.153 4.917
M7*1.0 6 6.153 5.917
M8*1.25 6.8 6.912 6.647
M9*1.25 7.8 7.912 7.647
M10*1.5 8.5 8.676 8.376
M11*1.5 9.5 9.676 9.376
M12*1.75 10.3 10.24 10.106
M14*2.0 12 12.21 11.835
M16*2.0 14 14.21 13.835
M18*2.5 15 15.144 15.294
M20*2.5 17 17.744 17.294
M22*2.5 19 19.744 19.294
M24*3.0 21 21.252 20.752
M27*3.0 24 24.252 23.752
M30*3.5 26.5 26.771 26.211

公制細螺紋
規格 標準徑 最大 最小 規格 標準徑 最大 最小
M1.0*0.2 0.8 0.821 0.783 M15*1.0 14 14.353 13.917
M1.1*0.2 0.9 0.921 0.883 M16*1.5 14.5 14.676 14.376
M1.2*0.2 1 1.021 0.983 M16*1.0 15 15.153 14.917
M1.4*0.2 1.2 1.221 1.183 M17*1.5 15.5 15.676 15.376
M1.6*0.2 1.4 1.421 1.383 M17*1.0 16 16.153 15.917
M1.7*0.2 1.45 1.5 1.46 M18*2.0 16 16.21 15.835
M1.8*0.2 1.6 1.621 1.583 M18*1.5 16.5 16.676 16.376
M2.0*0.25 1.75 1.785 1.729 M18*1.0 17 17.153 16.917
M2.2*0.25 1.95 1.985 1.929 M20*2.0 18 18.21 17.835
M2.3*0.25 2.05 2.061 2.001 M20*1.5 18.5 18.676 18.376
M2.5*0.35 2.2 2.221 2.121 M20*1.0 19 19.153 18.917
M2.5*0.35 2.2 2.246 2.186 M22*2.0 20 20.21 19.835
M3.0*0.35 2.7 2.721 2.621 M22*1.5 20.5 20.676 20.376
M3.5*0.35 3.2 3.221 3.121 22*1.0 21 21.153 20.917
M4.0*0.5 3.5 3.599 3.459 M24*2.0 22 22.21 21.835
M4.5*0.5 4 4.099 3.959 M24*1.5 22.5 22.676 22.376
M5.0*0.5 4.5 4.599 4.459 M24*1.0 23 23.153 22.917
M5.5*0.5 5 5.099 4.959 M25*2.0 23 23.21 22.835
M6.0*0.75 5.3 5.378 5.188 M25*1.5 23.5 23.676 23.376
M6.0*0.5 5.5 5.55 5.4 M25*1.0 24 24.153 23.917
M7.0*0.75 6.3 6.378 6.188 M26*1.5 24.5 24.676 24.876
M7.0*0.5 6.5 6.55 6.4 M27*2.0 25 25.21 24.735
M8.0*1 7 7.153 6.917 M27*1.5 25.5 25.676 25.376
M8.0*0.75 7.3 7.378 7.188 M27*1.0 26 26.153 25.735
M8.0*0.5 7.5 7.52 7.4 M28*2.0 26 26.21 25.835
M9.0*1 8 8.153 7.917 M28*1.5 26 26.676 26.376
M9.0*0.75 8.3 8.378 8.188 M28*1.0 27 27.153 26.917
M10*1.25 8.8 8.912 8.647 M30*3.0 27 27.252 26.752
M10*1.0 9 9.153 8.917 M30*2.0 28 28.21 27.835
M10*0.75 9.3 9.378 9.188 M30*1.0 28 28.676 28.376
M10*0.5 9.5 9.52 9.4 M32*2.0 30 29.153 28.917
M11*1.0 10 10.153 9.917 M32*1.5 30 30.21 29.835
M11*0.75 10.3 10.378 10.188 M33*3.0 30 30.676 30.376
M12*1.5 10.5 10.676 10.376 M33*2.0 31 30.252 29.752
M12*1.25 10.8 10.912 10.647 M33*1.5 31.5 31.21 30.835
M12*1 11 11.153 10.917 M35*1.5 33.5 33.676 31.376
M12*0.5 11.5 11.523 11.4 M36*3.0 33 33.252 32.752
M14*0.5 12.5 12.676 12.376 M36*2.0 34 34.21 33.835
M14*1.0 13 13.153 12.917 M36*1.5 34 34.676 34.376
M15*1.50 13.5 13.676 13.376