89. Diameter and pitch of metric threads
The common names, the correspondence between the external diameter and pitch are summarized in the following table for the most frequently used metric threads.
| Metric coarse threads | ||
|---|---|---|
| Common name (In the order of selection) |
Male thread external diameter Reference dimension (mm) |
Pitch (mm) |
|
M1 (First selection) |
1 |
0.25 |
|
M1.2 (First selection) |
1.2 |
0.25 |
|
M1.4 (Second selection) |
1.4 |
0.3 |
|
M1.6 (First selection) |
1.6 |
0.35 |
|
M1.8 (Second selection) |
1.8 |
0.35 |
|
M2 (First selection) |
2 |
0.4 |
|
M2.5 (First selection) |
2.5 |
0.45 |
|
M3 (First selection) |
3 |
0.5 |
|
M3.5 (Second selection) |
3.5 |
0.6 |
|
M4 (First selection) |
4 |
0.7 |
|
M5 (First selection) |
5 |
0.8 |
|
M6 (First selection) |
6 |
1 |
|
M7 (Second selection) |
7 |
1 |
|
M8 (First selection) |
8 |
1.25 |
|
M10 (First selection) |
10 |
1.5 |
|
M12 (First selection) |
12 |
1.75 |
|
M14 (Second selection) |
14 |
2 |
|
M16 (First selection) |
16 |
2 |
|
M18 (Second selection) |
18 |
2.5 |
|
M20 (First selection) |
20 |
2.5 |
|
M22 (Second selection) |
22 |
2.5 |
|
M24 (First selection) |
24 |
3 |
|
M27 (Second selection) |
27 |
3 |
|
M30 (First selection) |
30 |
3.5 |
|
M33 (Second selection) |
33 |
3.5 |
|
M36 (First selection) |
36 |
4 |
|
M39 (Second selection) |
39 |
4 |
|
M42 (First selection) |
42 |
4.5 |
|
M45 (Second selection) |
45 |
4.5 |
|
M48 (First selection) |
48 |
5 |
|
M52 (Second selection) |
52 |
5 |
|
M56 (First selection) |
56 |
5.5 |
|
M60 (Second selection) |
60 |
5.5 |
|
M64 (First selection) |
64 |
6 |
|
M8 ´ 1 (First selection) |
8 |
1 |
|
M10 ´ 1.25 (First selection) |
10 |
1.25 |
|
M10 ´ 1 (First selection) |
10 |
1 |
|
M12 ´ 1.25 (First selection) |
12 |
1.25 |
|
M12 ´ 1.5 (First selection) |
12 |
1.5 |
|
M14 ´ 1.5 (Second selection) |
14 |
1.5 |
|
M16 ´ 1.5 (First selection) |
16 |
1.5 |
|
M18 ´ 1.5 (Second selection) |
18 |
1.5 |
|
M18 ´ 2 (Second selection) |
18 |
2 |
|
M20 ´ 1.5 (First selection) |
20 |
1.5 |
|
M20 ´ 2 (First selection) |
20 |
2 |
|
M22 ´ 1.5 (Second selection) |
22 |
1.5 |
|
M22 ´ 2 (Second selection) |
22 |
2 |
|
M24 ´ 2 (First selection) |
24 |
2 |
|
M27 ´ 2 (Second selection) |
27 |
2 |
|
M30 ´ 2 (First selection) |
30 |
2 |
|
M33 ´ 2 (Second selection) |
33 |
2 |
|
M36 ´ 3 (First selection) |
36 |
3 |
|
M39 ´ 3 (Second selection) |
39 |
3 |
|
M42 ´ 3 (First selection) |
42 |
3 |
|
M45 ´ 3 (Second selection) |
45 |
3 |
|
M48 ´ 3 (First selection) |
48 |
3 |
|
M52 ´ 4 (Second selection) |
52 |
4 |
|
M56 ´ 4 (First selection) |
56 |
4 |
|
M60 ´ 4 (Second selection) |
60 |
4 |
|
M64 ´ 4 (First selection) |
64 |
4 |