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Din 931 Hexagon Head Bolt - Hdg
- Product Description
-
Product Introduction
STANDARD OF DIN 931- 1 - 1987
HEXAGON HEAD BOLITS GRADE A AND B
"d"
(thread
Dia.)PITCH
(MM)"b" (thread length)
"ds" (dia. of Unthreaded port)
"e" (diagonal distance)
"k" (the thickness of the Hex. Head)
"s" (distance across flats)
Reference value
Nomial
(Max.)Min. value
A Grade
B Grade
Nominal
A Grade
B Grade
Nomial
(Max.)A Grade
B Grade
L≤125
125<L≤200
L>200
A Grade
B Grade
Min.
Min.
Min.
Max.
Min.
Max.
Min.
Min.
M8
1.25
22.00
28.00
**
8.00
7.78
**
14.38
**
5.30
5.15
5.45
**
**
13.00
12.73
**
M10
1.50
26.00
32.00
45.00
10.00
9.78
**
18.90
**
6.40
6.22
6.58
**
**
17.00
16.73
**
M12
1.75
30.00
36.00
49.00
12.00
11.73
**
21.10
**
7.50
7.32
7.68
**
**
19.00
18.67
**
M14
2.00
34.00
40.00
53.00
14.00
13.73
**
24.49
**
8.80
8.62
8.98
**
**
22.00
21.67
**
M16
2.00
38.00
44.00
57.00
16.00
15.73
15.57
26.75
26.17
10.00
9.82
10.18
9.71
10.29
24.00
23.67
23.16
M18
2.50
42.00
48.00
61.00
18.00
17.73
17.57
30.14
29.56
11.50
11.28
11.72
11.15
11.85
27.00
26.67
26.16
M20
2.50
46.00
52.00
65.00
20.00
19.67
19.48
33.53
32.95
12.50
12.28
12.72
12.15
12.85
30.00
29.67
29.16
M22
2.50
50.00
56.00
69.00
22.00
21.67
21.48
35.72
35.03
14.00
13.78
14.22
13.65
14.35
32.00
31.61
31.00
M24
3.00
54.00
60.00
73.00
24.00
23.67
23.48
39.98
39.55
15.00
14.78
15.22
14.65
15.35
36.00
35.38
35.00
M27
3.00
60.00
66.00
79.00
27.00
**
26.48
**
45.20
17.00
**
**
16.65
17.35
41.00
**
40.00
M30
3.50
66.00
72.00
85.00
30.00
**
29.48
**
50.85
18.70
**
**
18.28
19.12
46.00
**
45.00
M33
3.50
72.00
78.00
91.00
33.00
**
32.38
**
55.37
21.00
**
**
20.58
21.42
50.00
**
49.00
M36
4.00
78.00
84.00
97.00
36.00
**
35.38
**
60.79
22.50
**
**
22.08
22.92
55.00
**
53.80
M39
4.00
84.00
90.00
103.00
39.00
**
38.38
**
66.44
25.00
**
**
24.58
25.42
60.00
**
58.80
Notes: In this table, the maximum size of product grade A is M24, and the length should not exceed 10d or 150mm; if the size is larger than M24 or the length exceeds 10d or 150mm, it belongs to bolt of product grade B.
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