Back to Metric Taps Menu
For Metric Taps
Unified and ISO
| 1.5mm - 14mm | 16mm - 39mm |
|
|
Recommended Tap for Class of Thread |
Pitch Diameter Limits for Class of Thread |
|||||||
|
Size mm |
Pitch mm |
2B |
3B |
4H |
6H |
Minimum (Basic) |
Max. 2B |
Max. 3B |
Max. 4H |
Max. 6H |
|
M1.5 |
0.35 |
GH-2 |
GH-1 |
GH-1 |
GH-2 |
1.273 |
1.332 |
1.317 |
1.326 |
1.358 |
|
M1.6 |
0.35 |
D3 |
GH-1 |
GH-1 |
D3 |
1.373 |
1.433 |
1.418 |
1.426 |
1.458 |
|
M1.8 |
0.35 |
D3 |
GH-1 |
GH-1 |
D3 |
1.573 |
1.635 |
1.619 |
1.626 |
1.658 |
|
M2 M2 |
0.45 0.4 |
GH-2 D3 |
GH-1 GH-1 |
GH-1 GH-1 |
GH-2 D3 |
1.708 1.740 |
1.776 1.806 |
1.759 1.790 |
1.768 1.796 |
1.803 1.830 |
|
M2.2 |
0.45 |
D3 |
GH-1 |
GH-1 |
D3 |
1.908 |
1.978 |
1.960 |
1.968 |
2.003 |
|
M2.3 |
0.4 |
GH-2 |
GH-1 |
GH-1 |
GH-2 |
2.040 |
2.108 |
2.091 |
2.096 |
2.130 |
|
M2.5 |
0.45 |
D3 |
GH-1 |
GH-1 |
D3 |
2.208 |
2.280 |
2.262 |
2.268 |
2.303 |
|
M2.6 |
0.45 |
GH-2 |
GH-1 |
GH-1 |
GH-2 |
2.308 |
2.380 |
2.362 |
2.368 |
2.403 |
|
M3 M3 |
0.6 0.5 |
GH-2 D3 |
GH-1 GH-1 |
GH-1 GH-1 |
GH-2 D3 |
2.610 2.675 |
2.692 2.753 |
2.672 2.733 |
2.681 2.738 |
2.722 2.775 |
|
M3.5 |
0.6 |
D4 |
GH-1 |
GH-1 |
D4 |
3.110 |
3.195 |
3.174 |
3.181 |
3.222 |
|
M4 M4 |
0.75 0.7 |
GH-3 D4 |
GH-2 GH-2 |
GH-2 GH-2 |
GH-3 D4 |
3.513 3.545 |
3.606 3.637 |
3.583 3.614 |
3.588 3.620 |
3.631 3.663 |
|
M4.5 |
0.75 |
D4 |
GH-2 |
GH-2 |
D4 |
4.013 |
4.109 |
4.085 |
4.088 |
4.131 |
|
M5 M5 M5 |
1 0.9 0.8 |
GH-3 GH-3 D4 |
GH-2 GH-2 GH-2 |
GH-2 GH-2 GH-2 |
GH-3 GH-3 D4 |
4.350 4.415 4.480 |
4.458 4.520 4.580 |
4.431 4.493 4.555 |
4.440 4.501 4.560 |
4.490 4.549 4.605 |
|
M5.5 |
0.9 |
GH-3 |
GH-2 |
GH-2 |
GH-3 |
4.915 |
5.022 |
4.995 |
5.002 |
5.050 |
|
M6 M6 M6.3 |
1 0.75 1 |
D5 GH-3 D5 |
GH-3 GH-2 GH-3 |
GH-3 GH-2 GH-3 |
D5 GH-3 D5 |
5.350 5.513 5.650 |
5.462 5.615 5.762 |
5.434 5.589 5.734 |
5.445 5.598 5.745 |
5.500 5.645 5.800 |
|
M7 M7 |
1 0.75 |
D5 GH-4 |
GH-3 GH-2 |
GH-3 GH-2 |
D5 GH-4 |
6.350 6.513 |
6.466 6.618 |
6.437 6.592 |
6.445 6.598 |
6.500 6.645 |
|
M8 M8 |
1.25 1 |
D5 D5 |
GH-3 GH-3 |
GH-3 GH-3 |
D5 D5 |
7.188 7.350 |
7.316 7.469 |
7.284 7.439 |
7.288 7.445 |
7.348 7.500 |
|
M9 M9 |
1.25 1 |
D5 D5 |
GH-3 GH-3 |
GH-3 GH-3 |
D5 D5 |
8.188 8.350 |
8.319 8.472 |
8.286 8.442 |
8.288 8.445 |
8.348 8.500 |
|
M10 M10 M10 |
1.5 1.25 1 |
D6 D5 D5 |
GH-3 GH-3 GH-3 |
GH-3 GH-3 GH-3 |
D6 D5 D5 |
9.026 9.188 9.350 |
9.168 9.322 9.475 |
9.132 9.288 9.444 |
9.138 9.288 9.445 |
9.206 9.348 9.500 |
|
M11 |
1.5 |
GH-5 |
GH-3 |
GH-3 |
GH-5 |
10.026 |
10.171 |
10.135 |
10.138 |
10.206 |
|
M12 M12 M12 |
1.75 1.5 1.25 |
D6 GH-5 D5 |
GH-3 GH-3 GH-3 |
GH-3 GH-3 GH-3 |
D6 GH-5 D5 |
10.863 11.026 11.188 |
11.019 11.173 11.327 |
10.980 11.136 11.292 |
10.988 11.144 11.300 |
11.063 11.216 11.368 |
|
M14 M14 M14 |
2 1.5 1.25 |
D7 D6 D5 |
GH-3 GH-3 GH-3 |
GH-3 GH-3 GH-3 |
D7 D6 D5 |
12.701 13.026 13.188 |
12.869 13.178 13.332 |
12.827 13.140 13.296 |
12.833 13.144 13.300 |
12.913 13.216 13.368 |
|
|
Recommended Tap for Class of Thread |
Pitch Diameter Limits for Class of Thread |
|||||||
|
Size mm |
Pitch mm |
2B |
3B |
4H |
6H |
Minimum (Basic) |
Max. 2B |
Max. 3B |
Max. 4H |
Max. 6H |
|
M16 M16 |
2 1.5 |
D7 D6 |
GH-4 GH-3 |
GH-4 GH-3 |
D7 D6 |
14.701 15.026 |
14.874 15.183 |
14.830 15.143 |
14.833 15.144 |
14.913 15.216 |
|
M17 |
1.5 |
GH-5 |
GH-3 |
GH-3 |
GH-5 |
16.026 |
16.185 |
16.145 |
16.144 |
16.216 |
|
M18 M18 M18 |
2.5 2 1.5 |
D7 GH-6 D6 |
GH-4 GH-4 GH-3 |
GH-4 GH-4 GH-3 |
D7 GH-6 D6 |
16.376 16.701 17.026 |
16.568 16.878 17.187 |
16.520 16.833 17.146 |
16.516 16.833 17.144 |
16.600 16.913 17.216 |
|
M19 |
2.5 |
GH-6 |
GH-4 |
GH-4 |
GH-6 |
17.376 |
17.569 |
17.521 |
17.516 |
17.600 |
|
M20 M20 M20 |
2.5 2 1.5 |
D7 GH-6 D6 |
GH-4 GH-4 GH-3 |
GH-4 GH-4 GH-3 |
D7 GH-6 D6 |
18.376 18.701 19.026 |
18.571 18.882 19.190 |
18.523 18.836 19.149 |
18.516 18.833 19.144 |
18.600 18.913 19.216 |
|
M22 M22 M22 |
2.5 2 1.5 |
D7 GH-6 D6 |
GH-4 GH-4 GH-3 |
GH-4 GH-4 GH-3 |
D7 GH-6 D6 |
20.376 20.701 21.026 |
20.575 20.885 21.194 |
20.525 20.839 21.152 |
20.516 20.833 21.144 |
20.600 20.913 21.216 |
|
M24 M24 M24 |
3 2 1.5 |
D8 D7 GH-5 |
GH-4 GH-4 GH-3 |
GH-4 GH-4 GH-3 |
D8 D7 GH-5 |
22.051 22.701 23.026 |
22.267 22.889 23.197 |
22.213 22.842 23.155 |
22.221 22.841 23.151 |
22.316 22.925 23.226 |
|
M25 M25 |
2 1.5 |
D7 GH-5 |
GH-4 GH-3 |
GH-4 GH-3 |
D7 GH-5 |
23.701 24.026 |
23.890 24.199 |
23.843 24.156 |
23.841 24.151 |
23.925 24.226 |
|
M26 |
3 |
D8 |
GH-5 |
GH-5 |
D8 |
24.051 |
24.271 |
24.216 |
24.221 |
24.316 |
|
M27 M27 |
3 2 |
D8 D7 |
GH-5 GH-5 |
GH-5 GH-5 |
D8 D7 |
25.051 25.701 |
25.272 25.893 |
25.217 25.845 |
25.221 25.841 |
25.316 25.925 |
|
M28 M28 |
3 2 |
D8 D7 |
GH-5 GH-5 |
GH-5 GH-5 |
D8 D7 |
26.051 26.701 |
26.274 26.895 |
26.218 26.846 |
26.221 26.841 |
26.316 26.925 |
|
M30 M30 M30 |
3.5 3 2 |
D9 D8 D7 |
GH-5 GH-5 GH-5 |
GH-5 GH-5 GH-5 |
D9 D8 D7 |
27.727 28.051 28.701 |
27.965 28.277 28.898 |
27.905 28.220 28.849 |
27.907 28.221 28.841 |
28.007 28.316 28.925 |
|
M32 M32 |
3.5 2 |
D9 D7 |
GH-5 GH-5 |
GH-5 GH-5 |
D9 D7 |
29.727 30.701 |
29.968 30.901 |
29.908 30.851 |
29.907 30.841 |
30.007 30.925 |
|
M33 M33 M33 |
3.5 3 2 |
D9 D8 D7 |
GH-5 GH-5 GH-5 |
GH-5 GH-5 GH-5 |
D9 D8 D7 |
30.727 31.051 31.701 |
30.969 31.281 31.902 |
30.909 31.224 31.852 |
30.907 31.221 31.841 |
31.007 31.316 31.925 |
|
M34 |
3.5 |
D9 |
GH-5 |
GH-5 |
D9 |
31.727 |
31.971 |
31.910 |
31.907 |
32.007 |
|
M36 M36 M36 |
4 3 2 |
D9 D8 D7 |
GH-5 GH-5 GH-5 |
GH-5 GH-5 GH-5 |
D9 D8 D7 |
33.402 34.051 34.701 |
33.661 34.285 34.906 |
33.596 34.227 34.855 |
33.592 34.221 34.841 |
33.702 34.316 34.925 |
|
M38 |
4 |
D9 |
GH-5 |
GH-5 |
D9 |
35.402 |
35.663 |
35.598 |
35.592 |
35.702 |
|
M39 M39 M39 |
4 3 2 |
D9 D8 D7 |
GH-6 GH-6 GH-6 |
GH-6 GH-6 GH-6 |
D9 D8 D7 |
36.402 37.051 37.701 |
36.665 37.289 37.910 |
36.599 37.230 37.858 |
36.592 37.221 37.841 |
36.702 37.316 37.925 |