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Metric External Thread Chart


General Note: All dimensions are in millimeters.

 

 

Metric External Thread Chart

Thread Designation x Pitch

Tolerance
Class

Major Dia. Pitch Dia. Minor Dia.
max. min. max. min. max. min.
M1.6 x 0.35 6g 1.581 1.496 1.354 1.291 1.202 1.075
M2 x 0.25 6g 1.982 1.915 1.820 1.764 1.711 1.610
M2 x 0.4 6g 1.981 1.886 1.721 1.654 1.548 1.408
M2.5 x 0.35 6g 2.481 2.396 2.254 2.191 2.102 1.998
M2.5 x 0.45 6g 2.480 2.380 2.188 2.117 1.993 1.840
M2.6 x 0.45 6g 2.580 2.480 2.288 2.217 2.093 1.940
M3 x 0.35 6g 2.981 2.896 2.754 2.687 2.602 2.471
M3 x 0.5 6g 2.980 2.874 2.655 2.580 2.438 2.272
M3.5 x 0.6 6g 3.479 3.354 3.089 3.004 2.829 2.634
M4 x 0.5 6g 3.980 3.874 3.655 3.580 3.439 3.272
M4 x 0.7 6g 3.978 3.838 3.523 3.433 3.220 3.002
M5 x 0.5 6g 4.980 4.874 4.655 4.580 4.439 4.272
M5 x 0.8 6g 4.976 4.826 4.456 4.361 4.110 3.868
M6 x 0.5 6g 5.980 5.874 5.655 5.570 5.439 5.262
M6 x 0.75 6g 5.978 5.838 5.491 5.391 5.166 4.929
M6 x 1 6g 5.974 5.794 5.324 5.212 4.891 4.596
M7 x 0.5 6g 6.980 6.874 6.655 6.570 6.439 6.262
M7 x 1 6g 6.974 6.794 6.324 6.212 5.891 5.596
M8 x 0.5 6g 7.980 7.874 7.655 7.570 7.439 7.262
M8 x 0.75 6g 7.978 7.838 7.491 7.391 7.166 6.929
M8 x 1 6g 7.974 7.794 7.324 7.212 6.891 6.596
M8 x 1.25 6g 7.972 7.760 7.160 7.042 6.619 6.272
M9 x 0.5 6g 8.980 8.874 8.655 8.570 8.439 8.262
M9 x 1 6g 8.972 8.794 8.324 8.212 7.891 7.596
M9 x 1.25 6g 8.972 8.760 8.160 8.042 7.619 7.272
M10 x 0.75 6g 9.978 9.838 9.491 9.391 9.166 8.929
M10 x 1 6g 9.974 9.794 9.324 9.212 8.891 8.596
M10 x 1.25 6g 9.972 9.760 9.160 9.042 8.619 8.272
M10 x 1.5 6g 9.968 9.732 8.994 8.862 8.344 7.938
M11 x 0.5 6g 10.980 10.874 10.655 10.570 10.439 10.262
M11 x 1 6g 10.974 10.794 10.324 10.212 9.891 9.596
M11 x 1.5 6g 10.968 10.732 9.994 9.862 9.344 8.938
M12 x 0.5 6g 11.980 11.874 11.655 11.565 11.439 11.257
M12 x 1 6g 11.974 11.794 11.324 11.206 10.891 10.590
M12 x 1.25 6g 11.972 11.760 11.160 11.028 10.619 10.258
M12 x 1.5 6g 11.968 11.732 10.994 10.854 10.344 9.930
M12 x 1.75 6g 11.966 11.701 10.829 10.679 10.071 9.601
M14 x 0.5 6g 13.980 13.874 13.655 13.565 13.439 13.257
M14 x 1.5 6g 13.968 13.732 12.994 12.854 12.344 11.930
M14 x 2 6g 13.962 13.682 12.663 12.503 11.797 11.271

 

 

Thread Designation x Pitch

Tolerance
Class

Major Dia. Pitch Dia. Minor Dia.
max. min. max. min. max. min.
M15 x 1 6g 14.974 14.794 14.324 14.206 13.891 13.590
M16 x 0.5 6g 15.980 15.874 15.655 15.565 15.439 15.257
M16 x 1.5 6g 15.968 15.732 14.994 14.854 14.344 13.930
M16 x 2 6g 15.962 15.682 14.663 14.503 13.797 13.271
M17 x 1 6g 16.974 16.794 16.324 16.206 15.891 15.590
M18 x 1 6g 17.974 17.794 17.324 17.206 16.891 16.590
M18 x 1.5 6g 17.968 17.732 16.994 16.854 16.344 15.930
M20 x 1 6g 19.974 19.794 19.324 19.206 18.891 18.590
M20 x 1.5 6g 19.968 19.732 18.994 18.854 18.344 17.930
M20 x 2.5 6g 19.958 19.623 18.334 18.164 17.251 16.624
M22 x 1.5 6g 21.968 21.732 20.994 20.854 20.344 19.930
M22 x 2.5 6g 21.958 21.623 20.334 20.164 19.251 18.624
M24 x 2 6g 23.962 23.682 22.663 22.493 21.797 21.261
M24 x 3 6g 23.952 23.577 22.003 21.803 20.704 19.955
M25 x 1.5 6g 24.968 24.732 23.994 23.844 23.344 22.920
M27 x 2 6g 26.962 26.682 25.663 25.493 24.797 24.261
M27 x 3 6g 26.952 26.577 25.003 24.803 23.704 22.955
M30 x 1.5 6g 29.968 29.732 28.994 28.844 28.344 27.920
M30 x 2 6g 29.962 29.682 28.663 28.493 27.797 27.261
M30 x 3.5 6g 29.947 29.522 27.674 27.462 26.158 25.306
M32 x 2 6g 31.962 31.682 30.663 30.493 29.797 29.261
M33 x 2 6g 32.962 32.682 31.663 31.493 30.797 30.261
M35 x 1.5 6g 34.968 34.732 33.994 33.844 33.344 32.920
M36 x 2 6g 35.962 35.682 34.663 34.493 33.797 33.261
M36 x 4 6g 35.940 35.465 33.342 33.118 31.610 30.654
M39 x 2 6g 38.962 38.682 37.663 37.493 36.797 36.261
M40 x 1.5 6g 39.968 39.732 38.994 38.844 38.344 37.920
M42 x 2 6g 41.962 41.682 40.663 40.493 39.797 39.261
M42 x 4.5 6g 41.937 41.437 39.014 38.778 37.065 36.006
M45 x 1.5 6g 44.968 44.732 43.994 43.844 43.344 42.920
M48 x 2 6g 47.962 47.682 46.663 46.483 45.797 45.251
M48 x 5 6g 47.929 47.399 44.681 44.431 42.516 41.351
M50 x 1.5 6g 49.968 49.732 48.994 48.834 48.344 47.910
M55 x 1.5 6g 54.968 54.732 53.994 53.834 53.344 52.910
M56 x 2 6g 55.962 55.682 54.663 54.483 53.797 53.251
M56 x 5.5 6g 55.925 55.365 52.353 52.088 49.971 48.700
M60 x 1.5 6g 59.968 59.732 58.994 58.834 58.344 57.910

 

 

Metric Internal Thread Chart


 

Metric Internal Thread Chart

Thread 
Designation

Tolerance
Class

Minor Dia., 
D1
Pitch Dia., 
D2
Major Dia.,
D
min. max. min. max. min. max.
M1.6 x 0.35 6H 1.221 1.321 1.373 1.458 1.600 1.736
M2 x 0.4 6H 1.567 1.679 1.740 1.830 2.000 2.148
M2.5 x 0.45 6H 2.013 2.138 2.208 2.303 2.500 2.660
M3 x 0.5 6H 2.459 2.599 2.675 2.775 3.000 3.172
M3.5 x 0.6 6H 2.850 3.010 3.110 3.222 3.500 3.698
M4 x 0.7 6H 3.242 3.422 3.545 3.663 4.000 4.219
M5 x 0.8 6H 4.134 4.334 4.480 4.605 5.000 5.240
M6 x 1 6H 4.917 5.153 5.350 5.500 6.000 6.294
M8 x 1.25 6H 6.647 6.912 7.188 7.348 8.000 8.340
M8 x 1 6H 6.917 7.153 7.350 7.500 8.000 8.294
M10 x 1.5 6H 8.376 8.676 9.026 9.206 10.000 10.397
M10 x 1.25 6H 8.647 8.912 9.188 9.348 10.000 10.340
M10 x 1 6H 8.917 9.153 9.350 9.500 10.000 10.294
M10 x 0.75 6H 9.188 9.378 9.513 9.645 10.000 10.240
M12 x 1.75 6H 10.106 10.441 10.863 11.063 12.000 12.452
M12 x 1.5 6H 10.376 10.676 11.026 11.216 12.000 12.407
M12 x 1.25 6H 10.647 10.912 11.188 11.368 12.000 12.360
M12 x 1 6H 10.917 11.153 11.350 11.510 12.000 12.304
M14 x 2 6H 11.835 12.210 12.701 12.913 14.000 14.501
M14 x 1.5 6H 12.376 12.676 13.026 13.216 14.000 14.407
M15 x 1 6H 13.917 14.153 14.350 14.510 15.000 15.304
M16 x 2 6H 13.835 14.210 14.701 14.913 16.000 16.501
M16 x 1.5 6H 14.376 14.676 15.026 15.216 16.000 16.407
M17 x 1 6H 15.917 16.153 16.350 16.510 17.000 17.304
M18 x 1.5 6H 16.376 16.676 17.026 17.216 18.000 18.407
M20 x 2.5 6H 17.294 17.744 18.376 18.600 20.000 20.585
M20 x 1.5 6H 18.376 18.676 19.026 19.216 20.000 20.407
M20 x 1 6H 18.917 19.153 19.350 19.510 20.000 20.304
M22 x 2.5 6H 19.294 19.744 20.376 20.600 22.000 22.585
M22 x 1.5 6H 20.376 20.676 21.026 21.216 22.000 22.407
M24 x 3 6H 20.752 21.252 22.051 22.316 24.000 24.698
M24 x 2 6H 21.835 22.210 22.701 22.925 24.000 24.513
M25 x 1.5 6H 23.376 23.676 24.026 24.226 25.000 25.417
M27 x 3 6H 23.752 24.252 25.051 25.316 27.000 27.698
M27 x 2 6H 24.835 25.210 25.701 25.925 27.000 27.513
M30 x 3.5 6H 26.211 26.771 27.727 28.007 30.000 30.786
M30 x 2 6H 27.835 28.210 28.701 28.925 30.000 30.513
M30 x 1.5 6H 28.376 28.676 29.026 29.226 30.000 30.417
M33 x 2 6H 30.835 31.210 31.701 31.925 33.000 33.513
M35 x 1.5 6H 33.376 33.676 34.026 34.226 35.000 35.417
M36 x 4 6H 31.670 32.270 33.402 33.702 36.000 36.877
M36 x 2 6H 33.835 34.210 34.701 34.925 36.000 36.513
M39 x 2 6H 36.835 37.210 37.701 37.925 39.000 39.513
M40 x 1.5 6H 38.376 38.676 39.026 39.226 40.000 40.417
M42 x 4.5 6H 37.129 37.799 39.077 39.392 42.000 42.964
M42 x 2 6H 39.835 40.21 40.701 40.925 42.000 42.513
M45 x 1.5 6H 43.376 43.676 44.026 44.226 45.000 45.417
M48 x 5 6H 42.587 43.297 44.752 45.087 48.000 49.056
M48 x 2 6H 45.835 46.210 46.701 46.937 48.000 48.525
M50 x 1.5 6H 48.376 48.676 49.026 49.238 50.000 50.429
M55 x 1.5 6H 53.376 53.676 54.026 54.238 55.000 55.429
M56 x 5.5 6H 50.046 50.796 52.428 52.783 56.000 57.149
M56 x 2 6H 53.835 54.210 54.701 54.937 56.000 56.525
M60 x 1.5 6H 58.376 58.676 59.026 59.238 60.000 60.429