Page 458 - Hartner
P. 458
Tapping size holes for thread cutting
Std. ISO metric threads ISO metric fine threads UNC threads
DIN 13 DIN 13 ASME B1.1
nom. pitch tapping core diameter nom. x pitch tapping core diameter nom. x pitch tapping core diameter nom. threads tapping core diameter
Ø P size of int. thread 6H* Ø P size of int. thread 6H Ø P size of int. thread 6H Ø size of int. thread 2B
hole Ø hole Ø hole Ø hole Ø
DIN 336 min. max. DIN 336 min. max. DIN 336 min. max. per DIN 336 min. max.
mm mm mm mm mm mm mm mm mm mm mm mm inch mm mm mm
M 1 0.25 0.75 0.729 0.785 M 2.5 x 0.35 2.15 2.121 2.221 M 22 x 1.50 20.50 20.376 20.676 Nr. 1 - 64 1.55 1.425 1.580
M 1.1 0.25 0.85 0.829 0.885 M 3.0 x 0.35 2.65 2.621 2.721 M 22 x 2.00 20.00 19.835 20.210 Nr. 2 - 56 1.85 1.694 1.872
M 1.2 0.25 0.95 0.929 0.985 M 3.5 x 0.35 3.15 3.121 3.221 M 24 x 1.00 23.00 22.917 23.153 Nr. 3 - 48 2.10 1.941 2.146
M 1.4 0.30 1.10 1.075 1.142 M 4.0 x 0.50 3.50 3.459 3.599 M 24 x 1.50 22.50 22.376 22.676 Nr. 4 - 40 2.35 2.157 2.385
M 1.6 0.35 1.25 1.221 1.321 M 4.5 x 0.50 4.00 3.959 4.099 M 24 x 2.00 22.00 21.835 22.210 Nr. 5 - 40 2.65 2.487 2.698
M 1.8 0.35 1.45 1.421 1.521 M 5.0 x 0.50 4.50 4.459 4.599 M 25 x 1.00 24.00 23.917 24.153 Nr. 6 - 32 2.85 2.642 2.896
M 2 0.40 1.60 1.567 1.679 M 5.5 x 0.50 5.00 4.959 5.099 M 25 x 1.50 23.50 23.376 23.676 Nr. 8 - 32 3.50 3.302 3.531
M 2.2 0.45 1.75 1.713 1.838 M 6.0 x 0.75 5.20 5.188 5.378 M 25 x 2.00 23.00 22.835 23.210 Nr. 10 - 24 3.90 3.683 3.937
M 2.5 0.45 2.05 2.013 2.138 M 7.0 x 0.75 6.20 6.188 6.378 M 27 x 1.00 26.00 25.917 26.153 Nr. 12 - 24 4.50 4.343 4.597
M 3 0.50 2.50 2.459 2.599 M 8.0 x 0.50 7.50 7.459 7.599 M 27 x 1.50 25.50 25.376 25.676 1 / 4 - 20 5.10 4.978 5.258
M 3.5 0.60 2.90 2.850 3.010 M 8.0 x 0.75 7.20 7.188 7.378 M 27 x 2.00 25.00 24.835 25.210 5 / 16 - 18 6.60 6.401 6.731
M 4 0.70 3.30 3.242 3.422 M 8.0 x 1.00 7.00 6.917 7.153 M 28 x 1.00 27.00 26.917 27.153 3 / 8 - 16 8.00 7.798 8.153
M 4.5 0.75 3.70 3.688 3.878 M 9.0 x 0.75 8.20 8.188 8.378 M 28 x 1.50 26.50 26.376 26.676 7 / 16 - 14 9.40 9.144 9.550
M 5 0.80 4.20 4.134 4.334 M 9.0 x 1.00 8.00 7.917 8.153 M 28 x 2.00 26.00 25.835 26.210 1 / 2 - 13 10.80 10.592 11.024
M 6 1.00 5.00 4.917 5.153 M 10 x 0.75 9.20 9.188 9.378 M 30 x 1.00 29.00 28.917 29.153 9 / 16 - 12 12.20 11.989 12.446
M 7 1.00 6.00 5.917 6.153 M 10 x 1.00 9.00 8.917 9.153 M 30 x 1.50 28.50 28.376 28.676 5 / 8 - 11 13.50 13.386 13.868
M 8 1.25 6.80 6.647 6.912 M 10 x 1.25 8.80 8.647 8.912 M 30 x 2.00 28.00 27.835 28.210 3 / 4 - 10 16.50 16.307 16.840
M 9 1.25 7.80 7.647 7.912 M 11 x 0.75 10.20 10.188 10.378 M 30 x 3.00 27.00 26.752 27.252 7 / 8 - 9 19.50 19.177 19.761
M 10 1.50 8.50 8.376 8.676 M 11 x 1.00 10.00 9.917 10.153 M 32 x 1.50 30.50 30.376 30.676 1 - 8 22.25 21.971 22.606
M 11 1.50 9.50 9.376 9.676 M 12 x 1.00 11.00 10.917 11.153 M 32 x 2.00 30.00 29.835 30.210 1 1 / 8 - 7 25.00 24.638 25.349
M 12 1.75 10.20 10.106 10.441 M 12 x 1.25 10.80 10.647 10.912 M 33 x 1.50 31.50 31.376 31.676 1 1 / 4 - 7 28.00 27.813 28.524
M 14 2.00 12.00 11.835 12.210 M 12 x 1.50 10.50 10.376 10.676 M 33 x 2.00 31.00 30.835 31.210 1 3 / 8 - 6 30.75 30.353 31.115
M 16 2.00 14.00 13.835 14.210 M 14 x 1.00 13.00 12.917 13.153 M 33 x 3.00 30.00 29.752 30.252 1 1 /2 - 6 34.00 33.528 34.290
M 18 2.50 15.50 15.294 15.744 M 14 x 1.25 12.80 12.647 12.912 M 35 x 1.50 33.50 33.376 33.676 1 3 / 4 - 5 39.50 38.938 39.802
M 20 2.50 17.50 17.294 17.744 M 14 x 1.50 12.50 12.376 12.676 M 36 x 1.50 34.50 34.376 34.676 2 - 4.5 45.00 44.679 45.593
M 22 2.50 19.50 19.294 19.744 M 15 x 1.00 14.00 13.917 14.153
M 24 3.00 21.00 20.752 21.252 M 15 x 1.50 13.50 13.376 13.676
M 27 3.00 24.00 23.752 24.252 M 16 x 1.00 15.00 14.917 15.153
M 30 3.50 26.50 26.211 26.771 M 16 x 1.25 14.80 14.647 14.912
M 33 3.50 29.50 29.211 29.771 M 16 x 1.50 14.50 14.376 14.676
M 36 4.00 32.00 31.670 32.270 M 17 x 1.00 16.00 15.917 16.153
M 39 4.00 35.00 34.670 35.270 M 17 x 1.50 15.50 15.376 15.676
M 42 4.50 37.50 37.129 37.799 M 18 x 1.00 17.00 16.917 17.153
M 45 4.50 40.50 40.129 40.799 M 18 x 1.50 16.50 16.376 16.676
M 48 5.00 43.00 42.587 43.297 M 20 x 1.00 19.00 18.917 19.153
M 52 5.00 47.00 46.587 47.297 M 20 x 1.50 18.50 18.376 18.676
M 56 5.50 50.50 50.046 50.796 M 20 x 2.00 18.00 17.835 18.210
M 22 x 1.00 21.00 20.917 21.153
* M 1.1 up to M 1.4 tapping size hole of int. thread 5H
MJ threads UNC threads UNF threads
DIN ISO 5855 ISO 3161 ISO 3161
nom. x pitch tapping core diameter nom. threads tapping core diameter nom. threads tapping core diameter
Ø P size of int. thread 5H* Ø size of int. thread 3B Ø size of int. thread 3B
hole Ø hole Ø hole Ø
DIN 336 min. max. per DIN 336 min. max. per DIN 336 min. max.
mm mm mm mm inch mm mm mm inch mm mm mm
MJ 3 x 0.50 2.60 2.513 2.653 Nr. 6 - 32 2.85 2.733 2.939 Nr. 6 - 40 3.00 2.888 3.053
MJ 4 x 0.70 3.40 3.318 3.498 Nr. 8 - 32 3.55 3.393 3.599 Nr. 8 - 36 3.60 3.480 3.663
MJ 5 x 0.80 4.30 4.221 4.421 Nr. 10 - 24 4.00 3.795 4.064 Nr. 10 - 32 4.20 4.054 4.255
MJ 6 x 0.50 5.55 5.513 5.625 Nr. 12 - 24 4.60 4.455 4.704 Nr. 12 - 28 4.75 4.602 4.816
MJ 6 x 0.75 5.35 5.269 5.419 1 / 4 - 20 5.30 5.113 5.387 1 / 4 - 28 5.60 5.466 5.662
MJ 6 x 1.00 5.10 5.026 5.216 5 / 16 - 18 6.75 6.563 6.833 5 / 16 - 24 7.00 6.906 7.109
MJ 8 x 0.50 7.55 7.513 7.625 3 / 8 - 16 8.20 7.978 8.255 3 / 8 - 24 8.60 8.494 8.679
MJ 8 x 0.75 7.35 7.269 7.419 7 / 16 - 14 9.60 9.346 9.639 7 / 16 - 20 10.00 9.876 10.084
MJ 8 x 1.00 7.10 7.026 7.216 1 /2 - 13 11.00 10.798 11.095 1 /2 - 20 11.60 11.463 11.661
MJ 8 x 1.25 6.90 6.782 6.994 9 / 16 - 12 12.40 12.228 12.482 9 / 16 - 18 13.00 12.913 13.122
MJ 10 x 1.00 9.10 9.026 9.216 5 / 8 - 11 13.80 13.627 13.904 5 / 8 - 18 14.60 14.501 14.702
MJ 10 x 1.25 8.90 8.782 8.994
MJ 10 x 1.50 8.60 8.539 8.775
MJ 12 x 1.75 10.40 10.295 10.560
MJ 16 x 2.00 14.20 14.051 14.351 * MJ3 x 0.50 up to MJ 5 x 0.80 tapping size hole of int. thread 6H
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