for Screws and Nut Threads
Limits of Sizes for Bolt & Nut Threads
| Reference No.: ISO 965/1-1980, ISO 965/2-1980 |
COARSE AND FINE THREAD SERIES
TOLERANCE DESIGNATION |
BOLT THREADS
6 h for sizes up to M 1, 4
6 g for sizes M 1, 6 and larger |
NUT THREADS
5 H for sizes upto M 1, 4
6 H for sizes M 1, 6 and larger |
Note : Tolerances apply to the threads before coating. After coating theactual thread profile shall not exceed the maximum tolerance H or h limits. Thin (electroplate-type) coating may be acceptable. | Limits for Metric (standard) Coarse Threads According To ISO 965
|
Thread Size in mm |
Engagement Length |
Major Diameter(d) |
Pitch Diameter(d2) |
|
|
from |
to |
max. |
min. |
max. |
min. |
|
M1 |
0,6 |
1,7 |
1,000 |
0,933 |
0,838 |
0,785 |
|
M1.2 |
0,6 |
1,7 |
1,100 |
1,033 |
0,938 |
0,885 |
|
M1.4 |
0, 7 |
2 |
1,400 |
1,325 |
1,205 |
1,149 |
|
M1.6 |
0, 8 |
2, 6 |
1,581 |
1,496 |
1,354 |
1,291 |
|
M1.8 |
0, 8 |
2, 6 |
1,781 |
1,696 |
1,554 |
1,491 |
|
M2 |
1 |
3 |
1,981 |
1,886 |
1,721 |
1,654 |
|
M2.5 |
1, 3 |
3, 8 |
2,180 |
2,080 |
1,888 |
1,817 |
|
M3 |
1, 5 |
4, 5 |
2,980 |
2,874 |
2,655 |
2,580 |
|
M3.5 |
1, 7 |
5 |
3,479 |
3,354 |
3,089 |
3,004` |
|
M4 |
2 |
6 |
3,978 |
3,838 |
3,523 |
3,433 |
|
M5 |
2, 5 |
7, 5 |
4,976 |
4,826 |
4,456 |
4,361 |
|
M6 |
3 |
9 |
5,974 |
5,794 |
5,324 |
5,212 |
|
M7 |
3 |
3 |
6,974 |
6,794 |
6,324 |
6,212 |
|
M8 |
4 |
12 |
7,972 |
7,760 |
7,160 |
7,042 |
|
M10 |
5 |
15 |
9,968 |
9,732 |
8,994 |
8,862 |
|
M12 |
6 |
18 |
11,966 |
11,701 |
10,829 |
10,679 |
|
M14 |
8 |
24 |
13,962 |
13,682 |
12,663 |
12,503 |
|
M16 |
8 |
24 |
15,962 |
15,682 |
14,663 |
14,503 |
|
M18 |
10 |
30 |
17,958 |
17,623 |
16,334 |
16,164 |
|
M20 |
10 |
30 |
19,958 |
19,623 |
18,334 |
18,164 |
|
M22 |
10 |
30 |
21,958 |
21,623 |
20,334 |
20,164 |
|
M24 |
12 |
36 |
23,952 |
23,577 |
22,003 |
21,803 |
|
M27 |
12 |
36 |
26,952 |
26,577 |
25,003 |
24,803 |
|
M30 |
15 |
45 |
29,947 |
29,522 |
27,674 |
27,462 |
|
M33 |
15 |
45 |
32,947 |
32,522 |
30,674 |
30,462 |
|
M36 |
18 |
53 |
35,940 |
35,465 |
33,342 |
33,118 |
|
M39 |
18 |
53 |
38,940 |
38,465 |
36,342 |
36,118 |
Limits For Metric Fine Threads According To ISO 965
|
Thread Size in mm |
Length of Thread engagement |
MAJOR DIAMETER |
PITCH DIAMETER |
|
over |
up to and incl. |
max. |
min. |
max. |
min. |
|
M8x1 |
3 |
9 |
7,974 |
7,794 |
7,324 |
7,212 |
|
M10x1.25 |
4 |
12 |
9,972 |
9,760 |
9,160 |
9,042 |
|
M12x1.25 |
4, 5 |
13 |
11,972 |
11,760 |
11,160 |
11,028 |
|
M14x1.5 |
5, 6 |
16 |
13,968 |
13,732 |
12,994 |
12,854 |
|
M16x1.5 |
5, 6 |
16 |
15,968 |
15,732 |
14,994 |
14,854 |
|
M18x1.5 |
5, 6 |
16 |
17,968 |
17,732 |
16,994 |
16,854 |
|
M20x1.5 |
5, 6 |
16 |
19,968 |
19,732 |
18,994 |
18,854 |
|
M22x1.5 |
5, 6 |
16 |
21,968 |
21,732 |
20,994 |
20,854 |
|
M24x2 |
8, 5 |
25 |
23,962 |
23,682 |
22,663 |
22,493 |
|
M27x2 |
8, 5 |
25 |
26,962 |
26,682 |
25,663 |
25,493 |
|
M30x2 |
8, 5 |
25 |
29,962 |
29,682 |
28,663 |
28,493 |
|
M33x2 |
8, 5 |
25 |
32,962 |
32,682 |
31,663 |
31,493 |
|
M36x3 |
12 |
36 |
35,952 |
35,577 |
34,003 |
33,803 |
|
M39x3 |
12 |
36 |
38,952 |
38,577 |
37,003 |
36,803 |
*All information is strictly informative
|
