Technical Section
  Limits for Metric (Standard) Coarse Threads
  Bolts tolerance class: 6g *
Thread Normal Engagement Length Major Diameter Pitch Diameter Minor Diameter**
  from to max. min. max. min. max. min.
M 1 0.6 1.7 1.000 0.933 0.838 0.785 0.693 0.630
M 1.2 0.6 1.7 1.200 1.133 1.038 0.985 0.893 0.830
M 1.4 0.7 2 1.400 1.325 1.205 1.149 1.032 0.964
M 1.6 0.8 2.6 1.581 1.496 1.354 1.291 1.151 1.075
M 1.8 0.8 2.6 1.781 1.696 1.554 1.491 1.352 1.275
M 2 1 3 1.981 1.886 1.721 1.654 1.490 1.407
M 2.5 1.3 3.8 2.480 2.380 2.188 2.117 1.928 1.840
M 3 1.5 4.5 2.980 2.874 2.655 2.580 2.367 2.273
M 3.5 1.7 5 3.479 3.354 3.089 3.004 2.743 2.635
M 4 2 6 3.978 3.838 3.523 3.433 3.119 3.002
M 5 2.5 7.5 4.976 4.826 4.456 4.361 3.995 3.869
M 6 3 9 5.974 5.794 5.324 5.212 4.747 4.596
M 7 3 9 6.974 6.794 6.324 6.212 5.747 5.596
M 8 4 12 7.972 7.760 7.160 7.042 6.438 6.672
M 10 5 15 9.968 8.732 8.994 8.862 8.128 7.938
M 12 6 18 11.966 11.701 10.829 10.679 9.819 9.602
M 14 8 24 13.962 13.682 12.663 12.503 11.508 11.271
M 16 8 24 15.962 15.682 14.663 14.503 13.508 13.271
M 18 10 30 17.958 17.623 16.334 16.164 14.891 14.625
M 20 10 30 19.580 19.623 18.334 18.164 16.891 16.625
M 22 10 30 21.958 21.623 20.334 20.164 18.891 18.625
M 24 12 36 23.952 23.577 22.003 21.803 20.271 19.955
M 27 12 36 26.952 26.577 25.003 24.803 23.271 22.955
M 30 15 45 29.974 29.522 27.674 27.462 25.658 25.306
M 33 15 45 32.974 32.522 30.674 30.462 28.653 28.306
M 36 18 53 39.940 35.465 33.342 33.118 31.033 30.655
M 39 18 53 38.940 38.465 36.342 36.118 34.033 33.655
*Note: M 1 - M 1.4 are given tolerance class 6H
**Max. minor diameter with R = 0.144, P = H/6; Min. minor diameter with R = 0.125, P = H/7
To Limits for Metric (Standard) Coarse Threads (nuts)

J.W. Winco. Inc. © 2010 | Terms and Conditions | Privacy / Disclaimer | ISO 9001:2008