Metric External Thread Chart — Limiting Dimensions for M Profile |
Thread
Designation |
Pitch, p |
Tolerance
Class |
Major Dia.,
d |
Pitch Dia.,
d2 |
Max.
Minor
Diameter
(Flat
Form)
d1 |
Min.
Minor
Diameter
(Rounded
Form)
d3 |
max. |
min. |
max. |
min. |
M1.6 x 0.35 |
0.35 |
6g |
1.581 |
1.496 |
1.354 |
1.291 |
1.202 |
1.075 |
M1.6 x 0.35 |
0.35 |
6h |
1.600 |
1.515 |
1.373 |
1.310 |
1.221 |
1.094 |
M1.6 x 0.35 |
0.35 |
4g6g |
1.581 |
1.496 |
1.354 |
1.314 |
1.202 |
1.098 |
M2 x 0.4 |
0.4 |
6g |
1.981 |
1.886 |
1.721 |
1.654 |
1.548 |
1.408 |
M2 x 0.4 |
0.4 |
6h |
2.000 |
1.905 |
1.740 |
1.673 |
1.567 |
1.427 |
M2 x 0.4 |
0.4 |
4g6g |
1.981 |
1.886 |
1.721 |
1.679 |
1.548 |
1.433 |
M2.5 x 0.45 |
0.45 |
6g |
2.480 |
2.380 |
2.188 |
2.117 |
1.993 |
1.840 |
M2.5 x 0.45 |
0.45 |
6h |
2.500 |
2.400 |
2.208 |
2.137 |
2.013 |
1.860 |
M2.5 x 0.45 |
0.45 |
4g6g |
2.480 |
2.380 |
2.188 |
2.143 |
1.993 |
1.866 |
M3 x 0.5 |
0.5 |
6g |
2.980 |
2.874 |
2.655 |
2.580 |
2.438 |
2.272 |
M3 x 0.5 |
0.5 |
6h |
3.000 |
2.894 |
2.675 |
2.600 |
2.458 |
2.292 |
M3 x 0.5 |
0.5 |
4g6g |
2.980 |
2.874 |
2.655 |
2.607 |
2.438 |
2.299 |
M3.5 x 0.6 |
0.6 |
6g |
3.479 |
3.354 |
3.089 |
3.004 |
2.829 |
2.634 |
M3.5 x 0.6 |
0.6 |
6h |
3.500 |
3.375 |
3.110 |
3.025 |
2.850 |
2.655 |
M3.5 x 0.6 |
0.6 |
4g6g |
3.479 |
3.354 |
3.089 |
3.036 |
2.829 |
2.666 |
Thread
Designation |
Pitch, p |
Tolerance
Class |
Major Dia.,
d |
Pitch Dia.,
d2 |
Max.
Minor
Diameter
(Flat
Form)
d1 |
Min.
Minor
Diameter
(Rounded
Form)
d3 |
max. |
min. |
max. |
min. |
M4 x 0.7 |
0.7 |
6g |
3.978 |
3.838 |
3.523 |
3.433 |
3.220 |
3.002 |
M4 x 0.7 |
0.7 |
6h |
4.000 |
3.860 |
3.545 |
3.455 |
3.242 |
3.024 |
M4 x 0.7 |
0.7 |
4g6g |
3.978 |
3.838 |
3.523 |
3.467 |
3.220 |
3.036 |
M5 x 0.8 |
0.8 |
6g |
4.976 |
4.826 |
4.456 |
4.361 |
4.110 |
3.868 |
M5 x 0.8 |
0.8 |
6h |
5.000 |
4.850 |
4.480 |
4.385 |
4.134 |
3.892 |
M5 x 0.8 |
0.8 |
4g6g |
4.976 |
4.826 |
4.456 |
4.396 |
4.110 |
3.903 |
M6 x 1 |
1 |
6g |
5.974 |
5.794 |
5.324 |
5.212 |
4.891 |
4.596 |
M6 x 1 |
1 |
6h |
6.000 |
5.820 |
5.350 |
5.238 |
4.917 |
4.622 |
M6 x 1 |
1 |
4g6g |
5.974 |
5.794 |
5.324 |
5.253 |
4.891 |
4.637 |
M8 x 1.25 |
1.25 |
6g |
7.972 |
7.760 |
7.160 |
7.042 |
6.619 |
6.272 |
M8 x 1.25 |
1.25 |
6h |
8.000 |
7.788 |
7.188 |
7.070 |
6.647 |
6.300 |
M8 x 1.25 |
1.25 |
4g6g |
7.972 |
7.760 |
7.160 |
7.085 |
6.619 |
6.315 |
M8 x 1 |
1 |
6g |
7.974 |
7.794 |
7.324 |
7.212 |
6.891 |
6.596 |
M8 x 1 |
1 |
6h |
8.000 |
7.820 |
7.350 |
7.238 |
6.917 |
6.622 |
M8 x 1 |
1 |
4g6g |
7.974 |
7.794 |
7.324 |
7.253 |
6.891 |
6.637 |
Thread
Designation |
Pitch, p |
Tolerance
Class |
Major Dia.,
d |
Pitch Dia.,
d2 |
Max.
Minor
Diameter
(Flat
Form)
d1 |
Min.
Minor
Diameter
(Rounded
Form)
d3 |
max. |
min. |
max. |
min. |
M10 x 1.5 |
1.5 |
6g |
9.968 |
9.732 |
8.994 |
8.862 |
8.344 |
7.938 |
M10 x 1.5 |
1.5 |
6h |
10.000 |
9.764 |
9.026 |
8.894 |
8.376 |
7.970 |
M10 x 1.5 |
1.5 |
4g6g |
9.968 |
9.732 |
8.994 |
8.909 |
8.344 |
7.985 |
M10 x 1.25 |
1.25 |
6g |
9.972 |
9.760 |
9.160 |
9.042 |
8.619 |
8.272 |
M10 x 1.25 |
1.25 |
6h |
10.000 |
9.788 |
9.188 |
9.070 |
8.647 |
8.300 |
M10 x 1.25 |
1.25 |
4g6g |
9.972 |
9.760 |
9.160 |
9.085 |
8.619 |
8.315 |
M10 x 1 |
1 |
6g |
9.974 |
9.794 |
9.324 |
9.212 |
8.891 |
8.596 |
M10 x 1 |
1 |
6h |
10.000 |
9.820 |
9.350 |
9.238 |
8.917 |
8.622 |
M10 x 1 |
1 |
4g6g |
9.974 |
9.794 |
9.324 |
9.253 |
8.891 |
8.637 |
M10 x 0.75 |
0.75 |
6g |
9.978 |
9.838 |
9.491 |
9.391 |
9.166 |
8.929 |
M10 x 0.75 |
0.75 |
6h |
10.000 |
9.860 |
9.513 |
9.413 |
9.188 |
8.951 |
M10 x 0.75 |
0.75 |
4g6g |
9.978 |
9.838 |
9.491 |
9.428 |
9.166 |
8.966 |
Thread
Designation |
Pitch, p |
Tolerance
Class |
Major Dia.,
d |
Pitch Dia.,
d2 |
Max.
Minor
Diameter
(Flat
Form)
d1 |
Min.
Minor
Diameter
(Rounded
Form)
d3 |
max. |
min. |
max. |
min. |
M12 x 1.75 |
1.75 |
6g |
11.966 |
11.701 |
10.829 |
10.679 |
10.071 |
9.601 |
M12 x 1.75 |
1.75 |
6h |
12.000 |
11.735 |
10.863 |
10.713 |
10.105 |
9.635 |
M12 x 1.75 |
1.75 |
4g6g |
11.966 |
11.701 |
10.829 |
10.734 |
10.071 |
9.656 |
M12 x 1.5 |
1.5 |
6g |
11.968 |
11.732 |
10.994 |
10.854 |
10.344 |
9.930 |
M12 x 1.5 |
1.5 |
6h |
12.000 |
11.764 |
11.026 |
10.886 |
10.376 |
9.962 |
M12 x 1.5 |
1.5 |
4g6g |
11.968 |
11.732 |
10.994 |
10.904 |
10.344 |
9.980 |
M12 x 1.25 |
1.25 |
6g |
11.972 |
11.760 |
11.160 |
11.028 |
10.619 |
10.258 |
M12 x 1.25 |
1.25 |
6h |
12.000 |
11.788 |
11.188 |
11.056 |
10.647 |
10.286 |
M12 x 1.25 |
1.25 |
4g6g |
11.972 |
11.760 |
11.160 |
11.075 |
10.619 |
10.305 |
M12 x 1 |
1 |
6g |
11.974 |
11.794 |
11.324 |
11.206 |
10.891 |
10.590 |
M12 x 1 |
1 |
6h |
12.000 |
11.820 |
11.350 |
11.232 |
10.917 |
10.616 |
M12 x 1 |
1 |
4g6g |
11.974 |
11.794 |
11.324 |
11.249 |
10.891 |
10.633 |
Thread
Designation |
Pitch, p |
Tolerance
Class |
Major Dia.,
d |
Pitch Dia.,
d2 |
Max.
Minor
Diameter
(Flat
Form)
d1 |
Min.
Minor
Diameter
(Rounded
Form)
d3 |
max. |
min. |
max. |
min. |
M14 x 2 |
2 |
6g |
13.962 |
13.682 |
12.663 |
12.503 |
11.797 |
11.271 |
M14 x 2 |
2 |
6h |
14.000 |
13.720 |
12.701 |
12.541 |
11.835 |
11.309 |
M14 x 2 |
2 |
4g6g |
13.962 |
13.682 |
12.663 |
12.563 |
11.797 |
11.331 |
M14 x 1.5 |
1.5 |
6g |
13.968 |
13.732 |
12.994 |
12.854 |
12.344 |
11.930 |
M14 x 1.5 |
1.5 |
6h |
14.000 |
13.764 |
13.026 |
12.886 |
12.376 |
11.962 |
M14 x 1.5 |
1.5 |
4g6g |
13.968 |
13.732 |
12.994 |
12.904 |
12.344 |
11.980 |
M15 x 1 |
1 |
6g |
14.974 |
14.794 |
14.324 |
14.206 |
13.891 |
13.590 |
M15 x 1 |
1 |
6h |
15.000 |
14.820 |
14.350 |
14.232 |
13.917 |
13.616 |
M15 x 1 |
1 |
4g6g |
14.974 |
14.794 |
14.324 |
14.249 |
13.891 |
13.633 |
M16 x 2 |
2 |
6g |
15.962 |
15.682 |
14.663 |
14.503 |
13.797 |
13.271 |
M16 x 2 |
2 |
6h |
16.000 |
15.720 |
14.701 |
14.541 |
13.835 |
13.309 |
M16 x 2 |
2 |
4g6g |
15.962 |
15.682 |
14.663 |
14.563 |
13.797 |
13.331 |
M16 x 1.5 |
1.5 |
6g |
15.968 |
15.732 |
14.994 |
14.854 |
14.344 |
13.930 |
M16 x 1.5 |
1.5 |
6h |
16.000 |
15.764 |
15.026 |
14.886 |
14.376 |
13.962 |
M16 x 1.5 |
1.5 |
4g6g |
15.968 |
15.732 |
14.994 |
14.904 |
14.344 |
13.980 |
M17 x 1 |
1 |
6g |
16.974 |
16.794 |
16.324 |
16.206 |
15.891 |
15.590 |
M17 x 1 |
1 |
6h |
17.000 |
16.820 |
16.350 |
16.232 |
15.917 |
15.616 |
M17 x 1 |
1 |
4g6g |
16.974 |
16.794 |
16.324 |
16.249 |
15.891 |
15.633 |
M18 x 1.5 |
1.5 |
6g |
17.968 |
17.732 |
16.994 |
16.854 |
16.344 |
15.930 |
M18 x 1.5 |
1.5 |
6h |
18.000 |
17.764 |
17.026 |
16.886 |
16.376 |
15.962 |
M18 x 1.5 |
1.5 |
4g6g |
17.968 |
17.732 |
16.994 |
16.904 |
16.344 |
15.980 |
Thread
Designation |
Pitch, p |
Tolerance
Class |
Major Dia.,
d |
Pitch Dia.,
d2 |
Max.
Minor
Diameter
(Flat
Form)
d1 |
Min.
Minor
Diameter
(Rounded
Form)
d3 |
max. |
min. |
max. |
min. |
M20 x 2.5 |
2.5 |
6g |
19.958 |
19.623 |
18.334 |
18.164 |
17.251 |
16.624 |
M20 x 2.5 |
2.5 |
6h |
20.000 |
19.665 |
18.376 |
18.206 |
17.293 |
16.666 |
M20 x 2.5 |
2.5 |
4g6g |
19.958 |
19.623 |
18.334 |
18.228 |
17.251 |
16.688 |
M20 x 1.5 |
1.5 |
6g |
19.968 |
19.732 |
18.994 |
18.854 |
18.344 |
17.930 |
M20 x 1.5 |
1.5 |
6h |
20.000 |
19.764 |
19.026 |
18.886 |
18.376 |
17.962 |
M20 x 1.5 |
1.5 |
4g6g |
19.968 |
19.732 |
18.994 |
18.904 |
18.344 |
17.980 |
M20 x 1 |
1 |
6g |
19.974 |
19.794 |
19.324 |
19.206 |
18.891 |
18.590 |
M20 x 1 |
1 |
6h |
20.000 |
19.820 |
19.350 |
19.232 |
18.917 |
18.616 |
M20 x 1 |
1 |
4g6g |
19.974 |
19.794 |
19.324 |
19.249 |
18.891 |
18.633 |
M22 x 2.5 |
2.5 |
6g |
21.958 |
21.623 |
20.334 |
20.164 |
19.251 |
18.624 |
M22 x 2.5 |
2.5 |
6h |
22.000 |
21.665 |
20.376 |
20.206 |
19.293 |
18.666 |
M22 x 1.5 |
1.5 |
6g |
21.968 |
21.732 |
20.994 |
20.854 |
20.344 |
19.930 |
M22 x 1.5 |
1.5 |
6h |
22.000 |
21.764 |
21.026 |
20.886 |
20.376 |
19.962 |
M22 x 1.5 |
1.5 |
4g6g |
21.968 |
21.732 |
20.994 |
20.904 |
20.344 |
19.980 |
M24 x 3 |
3 |
6g |
23.952 |
23.577 |
22.003 |
21.803 |
20.704 |
19.955 |
M24 x 3 |
3 |
6h |
24.000 |
23.625 |
22.051 |
21.851 |
20.752 |
20.003 |
M24 x 3 |
3 |
4g6g |
23.952 |
23.577 |
22.003 |
21.878 |
20.704 |
20.030 |
M24 x 2 |
2 |
6g |
23.962 |
23.682 |
22.663 |
22.493 |
21.797 |
21.261 |
M24 x 2 |
2 |
6h |
24.000 |
23.720 |
22.701 |
22.531 |
21.835 |
21.299 |
M24 x 2 |
2 |
4g6g |
23.962 |
23.682 |
22.663 |
22.557 |
21.797 |
21.325 |
Thread
Designation |
Pitch, p |
Tolerance
Class |
Major Dia.,
d |
Pitch Dia.,
d2 |
Max.
Minor
Diameter
(Flat
Form)
d1 |
Min.
Minor
Diameter
(Rounded
Form)
d3 |
max. |
min. |
max. |
min. |
M25 x 1.5 |
1.5 |
6g |
24.968 |
24.732 |
23.994 |
23.844 |
23.344 |
22.920 |
M25 x 1.5 |
1.5 |
6h |
25.000 |
24.764 |
24.026 |
23.876 |
23.376 |
22.952 |
M25 x 1.5 |
1.5 |
4g6g |
24.968 |
24.732 |
23.994 |
23.899 |
23.344 |
22.975 |
M27 x 3 |
3 |
6g |
26.952 |
26.577 |
25.003 |
24.803 |
23.704 |
22.955 |
M27 x 3 |
3 |
6h |
27.000 |
26.625 |
25.051 |
24.851 |
23.752 |
23.003 |
M27 x 2 |
2 |
6g |
26.962 |
26.682 |
25.663 |
25.493 |
24.797 |
24.261 |
M27 x 2 |
2 |
6h |
27.000 |
26.720 |
25.701 |
25.531 |
24.835 |
24.299 |
M27 x 2 |
2 |
4g6g |
26.962 |
26.682 |
25.663 |
25.557 |
24.797 |
24.325 |
M30 x 3.5 |
3.5 |
6g |
29.947 |
29.522 |
27.674 |
27.462 |
26.158 |
25.306 |
M30 x 3.5 |
3.5 |
6h |
30.000 |
29.575 |
27.727 |
27.515 |
26.211 |
25.359 |
M30 x 3.5 |
3.5 |
4g6g |
29.947 |
29.522 |
27.674 |
27.542 |
26.158 |
25.386 |
M30 x 2 |
2 |
6g |
29.962 |
29.682 |
28.663 |
28.493 |
27.797 |
27.261 |
M30 x 2 |
2 |
6h |
30.000 |
29.720 |
28.701 |
28.531 |
27.835 |
27.299 |
M30 x 2 |
2 |
4g6g |
29.962 |
29.682 |
28.663 |
28.557 |
27.797 |
27.325 |
M30 x 1.5 |
1.5 |
6g |
29.968 |
29.732 |
28.994 |
28.844 |
28.344 |
27.920 |
M30 x 1.5 |
1.5 |
6h |
30.000 |
29.764 |
29.026 |
28.876 |
28.376 |
27.952 |
M30 x 1.5 |
1.5 |
4g6g |
29.968 |
29.732 |
28.994 |
28.899 |
28.344 |
27.975 |
M33 x 2 |
2 |
6g |
32.962 |
32.682 |
31.663 |
31.493 |
30.797 |
30.261 |
M33 x 2 |
2 |
6h |
33.000 |
32.720 |
31.701 |
31.531 |
30.835 |
30.299 |
M33 x 2 |
2 |
4g6g |
32.962 |
32.682 |
31.663 |
31.557 |
30.797 |
30.325 |
Thread
Designation |
Pitch, p |
Tolerance
Class |
Major Dia.,
d |
Pitch Dia.,
d2 |
Max.
Minor
Diameter
(Flat
Form)
d1 |
Min.
Minor
Diameter
(Rounded
Form)
d3 |
max. |
min. |
max. |
min. |
M35 x 1.5 |
1.5 |
6g |
34.968 |
34.732 |
33.994 |
33.844 |
33.344 |
32.920 |
M35 x 1.5 |
1.5 |
6h |
35.000 |
34.764 |
34.026 |
33.876 |
33.376 |
32.952 |
M36 x 4 |
4 |
6g |
35.940 |
35.465 |
33.342 |
33.118 |
31.610 |
30.654 |
M36 x 4 |
4 |
6h |
36.000 |
35.525 |
33.402 |
33.178 |
31.670 |
30.714 |
M36 x 4 |
4 |
4g6g |
35.940 |
35.465 |
33.342 |
33.202 |
31.610 |
30.738 |
M36 x 2 |
2 |
6g |
35.962 |
35.682 |
34.663 |
34.493 |
33.797 |
33.261 |
M36 x 2 |
2 |
6h |
36.000 |
35.720 |
34.701 |
34.531 |
33.835 |
33.299 |
M36 x 2 |
2 |
4g6g |
35.962 |
35.682 |
34.663 |
34.557 |
33.797 |
33.325 |
M39 x 2 |
2 |
6g |
38.962 |
38.682 |
37.663 |
37.493 |
36.797 |
36.261 |
M39 x 2 |
2 |
6h |
39.000 |
38.720 |
37.701 |
37.531 |
36.835 |
36.299 |
M39 x 2 |
2 |
4g6g |
38.962 |
38.682 |
37.663 |
37.557 |
36.797 |
36.325 |
M40 x 1.5 |
1.5 |
6g |
39.968 |
39.732 |
38.994 |
38.844 |
38.344 |
37.920 |
M40 x 1.5 |
1.5 |
6h |
40.000 |
39.764 |
39.026 |
38.876 |
38.376 |
37.952 |
M40 x 1.5 |
1.5 |
4g6g |
39.968 |
39.732 |
38.994 |
38.899 |
38.344 |
37.975 |
Thread
Designation |
Pitch, p |
Tolerance
Class |
Major Dia.,
d |
Pitch Dia.,
d2 |
Max.
Minor
Diameter
(Flat
Form)
d1 |
Min.
Minor
Diameter
(Rounded
Form)
d3 |
max. |
min. |
max. |
min. |
M42 x 4.5 |
4.5 |
6g |
41.937 |
41.437 |
39.014 |
38.778 |
37.065 |
36.006 |
M42 x 4.5 |
4.5 |
6h |
42.000 |
41.500 |
39.077 |
38.841 |
37.128 |
36.069 |
M42 x 4.5 |
4.5 |
4g6g |
41.937 |
41.437 |
39.014 |
38.864 |
37.065 |
36.092 |
M42 x 2 |
2 |
6g |
41.962 |
41.682 |
40.663 |
40.493 |
39.797 |
39.261 |
M42 x 2 |
2 |
6h |
42.000 |
41.720 |
40.701 |
40.531 |
39.835 |
39.299 |
M42 x 2 |
2 |
4g6g |
41.962 |
41.682 |
40.663 |
40.557 |
39.797 |
39.325 |
M45 x 1.5 |
1.5 |
6g |
44.968 |
44.732 |
43.994 |
43.844 |
43.344 |
42.920 |
M45 x 1.5 |
1.5 |
6h |
45.000 |
44.764 |
44.026 |
43.876 |
43.376 |
42.952 |
M45 x 1.5 |
1.5 |
4g6g |
44.968 |
44.732 |
43.994 |
43.899 |
43.344 |
42.975 |
M48 x 5 |
5 |
6g |
47.929 |
47.399 |
44.681 |
44.431 |
42.516 |
41.351 |
M48 x 5 |
5 |
6h |
48.000 |
47.470 |
44.752 |
44.502 |
42.587 |
41.422 |
M48 x 5 |
5 |
4g6g |
47.929 |
47.399 |
44.681 |
44.521 |
42.516 |
41.441 |
M48 x 2 |
2 |
6g |
47.962 |
47.682 |
46.663 |
46.483 |
45.797 |
45.251 |
M48 x 2 |
2 |
6h |
48.000 |
47.720 |
46.701 |
46.521 |
45.835 |
45.289 |
M48 x 2 |
2 |
4g6g |
47.962 |
47.682 |
46.663 |
46.551 |
45.797 |
45.319 |
Thread
Designation |
Pitch, p |
Tolerance
Class |
Major Dia.,
d |
Pitch Dia.,
d2 |
Max.
Minor
Diameter
(Flat
Form)
d1 |
Min.
Minor
Diameter
(Rounded
Form)
d3 |
max. |
min. |
max. |
min. |
M50 x 1.5 |
1.5 |
6g |
49.968 |
49.732 |
48.994 |
48.834 |
48.344 |
47.910 |
M50 x 1.5 |
1.5 |
6h |
50.000 |
49.764 |
49.026 |
48.866 |
48.376 |
47.942 |
M50 x 1.5 |
1.5 |
4g6g |
49.968 |
49.732 |
48.994 |
48.894 |
48.344 |
47.970 |
M55 x 1.5 |
1.5 |
6g |
54.968 |
54.732 |
53.994 |
53.834 |
53.344 |
52.910 |
M55 x 1.5 |
1.5 |
6h |
55.000 |
54.764 |
54.026 |
53.866 |
53.376 |
52.942 |
M55 x 1.5 |
1.5 |
4g6g |
54.968 |
54.732 |
53.994 |
53.894 |
53.344 |
52.970 |
M56 x 5.5 |
5.5 |
6g |
55.925 |
55.365 |
52.353 |
52.088 |
49.971 |
48.700 |
M56 x 5.5 |
5.5 |
6h |
56.000 |
55.440 |
52.428 |
52.163 |
50.046 |
48.775 |
M56 x 5.5 |
5.5 |
4g6g |
55.925 |
55.365 |
52.353 |
52.183 |
49.971 |
48.795 |
M56 x 2 |
2 |
6g |
55.962 |
55.682 |
54.663 |
54.483 |
53.797 |
53.251 |
M56 x 2 |
2 |
6h |
56.000 |
55.720 |
54.701 |
54.521 |
53.835 |
53.289 |
M56 x 2 |
2 |
4g6g |
55.962 |
55.682 |
54.663 |
54.551 |
53.797 |
53.319 |
M60 x 1.5 |
1.5 |
6g |
59.968 |
59.732 |
58.994 |
58.834 |
58.344 |
57.910 |
M60 x 1.5 |
1.5 |
6h |
60.000 |
59.764 |
59.026 |
58.866 |
58.376 |
57.942 |
M60 x 1.5 |
1.5 |
4g6g |
59.968 |
59.732 |
58.994 |
58.894 |
58.344 |
57.970 |
General Note: All dimensions are in millimeters.