ENQUIRY

DIN 912 / DIN EN ISO 4762

Hex head Screws

Nominal size and thread diameter d
Pitch of thread P
Thread length b
Head diameter dk
Transition diameter da
Diameter of unthreaded shank
ds
Hex socket width across corners
e
Thickness of head
k
Radius under head
r
Hex socket width across flats
s
Hex socket depth
t
w
coarse pitch
max.
min.
max.
max.
min.
max.
min.
min.
max.
nom.
min.
max.
nom.
min.
min.
M10
1.50
32
15.73
16.00
11.20
9.78
10.00
9.15
9.64
10.00
0.4
8.03
8.18
8.00
5.0
4.0
M12
1.75
36
17.73
18.00
13.70
11.73
12.00
11.43
11.57
12.00
0.6
10.03
10.18
10.00
6.0
4.8
M14
2.00
40
20.67
21.00
15.70
13.73
14.00
13.73
13.57
14.00
0.6
12.03
12.21
12.00
7.0
5.8
M16
2.00
44
23.67
24.00
17.70
15.73
16.00
15.73
15.57
16.00
0.6
14.03
14.21
14.00
8.0
6.8
M18
2.50
48
26.67
27.00
20.20
17.73
18.00
17.73
17.57
18.00
0.6
14.03
14.21
14.00
9.0
7.8
M20
2.50
52
29.67
30.00
22.40
19.67
20.00
19.44
19.48
20.00
0.8
17.05
17.23
17.00
10.0
8.6
M22
2.50
56
32.61
33.00
24.40
21.67
22.00
19.44
21.48
22.00
0.8
17.05
17.23
17.00
11.0
9.4
M24
3.00
60
35.61
36.00
26.40
23.67
24.00
21.73
23.48
24.00
0.8
19.07
19.28
19.00
12.0
10.4
M27
3.00
66
39.61
40.00
30.40
26.67
27.00
21.73
26.48
27.00
1.0
19.07
19.28
19.00
13.5
11.9
M30
3.50
72
44.61
45.00
33.40
29.67
30.00
25.15
29.48
30.00
1.0
22.07
22.28
22.00
15.5
13.1
M33
3.50
78
49.61
50.00
36.40
32.61
33.00
27.43
32.38
33.00
1.0
24.07
24.28
24.00
18.0
13.5
M36
4.00
84
53.54
54.00
39.40
35.61
36.00
30.85
35.38
36.00
1.0
27.07
27.28
27.00
19.0
15.3
M42
4.50
95
62.54
63.00
45.50
41.61
42.00
36.57
41.38
42.00
1.2
32.08
32.33
32.00
24.0
16.3
M48
5.00
108
71.54
72.00
52.60
47.61
48.00
41.13
47.38
48.00
1.6
36.08
36.33
36.00
28.0
17.5
M56
5.50
124
83.46
84.00
63.00
55.54
56.00
46.83
56.26
56.00
2.0
41.08
41.33
41.00
34.0
19.0
M64
6.00
140
95.46
96.00
71.00
63.54
64.00
52.53
63.26
64.00
2.0
46.08
46.33
46.00
38.0
22.0
M72
6.00
156
107.46
108.00
79.00
71.54
72.00
62.81
71.26
72.00
2.0
55.10
55.10
55.00
43.0
25.0
M80
6.00
172
119.46
120.00
87.00
79.54
80.00
74.21
79.26
80.00
2.0
65.10
65.40
65.00
48.0
27.0
M90
6.00
192
134.37
135.00
97.00
89.46
90.00
85.61
89.13
90.00
2.5
75.10
75.40
75.00
54.0
32.0
M100
6.00
212
149.37
150.63
107.00
99.46
100.00
97.04
99.13
100.00
2.5
85.12
85.47
85.00
60.0
34.0



DIN 912 Dimensions of Socket Head Screws (concluded)

d
M10
M12
M14
M16
M18
M20
M22
M24
M27
M30
l
ls
min.
lg
max.
ls
min.
lg
max.
ls
min.
lg
max.
ls
min.
lg
max.
ls
min.
lg
max.
ls
min.
lg
max.
ls
min.
lg
max.
ls
min.
lg
max.
ls
min.
lg
max.
ls
min.
lg
max.
nom.
25
-
4.50
-
5.25
-
6.00
-
6.00
30
-
4.50
-
5.25
-
6.00
-
6.00
-
7.50
-
7.50
35
-
4.50
-
5.25
-
6.00
-
6.00
-
7.50
-
7.50
-
7.50
40
-
4.50
-
5.25
-
6.00
-
6.00
-
7.50
-
7.50
-
7.50
-
9.00
45
5.50
13.00
-
5.25
-
6.00
-
6.00
-
7.50
-
7.50
-
7.50
-
9.00
-
9.00
-
10.50
50
10.50
18.00
-
5.25
-
6.00
-
6.00
-
7.50
-
7.50
-
7.50
-
9.00
-
9.00
-
10.50
55
15.50
23.00
10.25
19.00
-
6.00
-
6.00
-
7.50
-
7.50
-
7.50
-
9.00
-
9.00
-
10.50
60
20.50
28.00
15.25
24.00
10.00
20.00
-
6.00
-
7.50
-
7.50
-
7.50
-
9.00
-
9.00
-
10.50
65
25.50
33.00
20.25
29.00
15.00
25.00
11.00
21.00
-
7.50
-
7.50
-
7.50
-
9.00
-
9.00
-
10.50
70
30.50
38.00
25.25
34.00
20.00
30.00
16.00
26.00
9.50
22.00
-
7.50
-
7.50
-
9.00
-
9.00
-
10.50
80
40.50
48.00
35.25
44.00
30.00
40.00
26.00
36.00
19.50
32.00
15.50
28.00
11.50
24.00
-
9.00
-
9.00
-
10.50
90
50.50
58.00
45.25
54.00
40.00
50.00
36.00
46.00
29.50
42.00
25.50
38.00
21.50
34.00
15.00
30.00
-
9.00
-
10.50
100
60.50
68.00
55.25
64.00
50.00
60.00
46.00
56.00
39.50
52.00
35.50
48.00
31.50
44.00
25.00
40.00
19.00
34.00
-
10.50
110
65.25
74.00
60.00
70.00
56.00
66.00
49.50
62.00
45.50
58.00
41.50
54.00
35.00
50.00
29.00
44.00
20.50
38.00
120
75.25
84.00
70.00
80.00
66.00
76.00
59.50
72.00
55.50
68.00
51.50
64.00
45.00
60.00
39.00
54.00
30.50
48.00
130
80.00
90.00
76.00
86.00
69.50
82.00
65.50
78.00
61.50
74.00
55.00
70.00
49.00
64.00
40.50
58.00
140
90.00
100.00
86.00
96.00
79.50
92.00
75.50
88.00
71.50
84.00
65.00
80.00
59.00
74.00
50.50
68.00
150
96.00
106.00
89.50
102.00
85.50
98.00
81.50
94.00
75.00
90.00
69.00
84.00
60.50
78.00
160
106.00
116.00
99.50
112.00
95.50
108.00
91.50
104.00
85.00
100.00
79.00
94.00
70.50
88.00
180
119.50
132.00
115.50
128.00
111.50
124.00
105.00
120.00
99.00
114.00
90.50
108.00
200
135.50
148.00
131.50
144.00
125.00
140.00
119.00
134.00
110.50
128.00

d
M33
M36
M42
M48
M56
M64
M72
M80
M90
M100
l
ls
min.
lg
max.
ls
min.
lg
max.
ls
min.
lg
max.
ls
min.
lg
max.
ls
min.
lg
max.
ls
min.
lg
max.
ls
min.
lg
max.
ls
min.
lg
max.
ls
min.
lg
max.
ls
min.
lg
max.
nom.
50
-
10.50
55
-
10.50
-
12.00
60
-
10.50
-
12.00
-
13.50
65
-
10.50
-
12.00
-
13.50
70
-
10.50
-
12.00
-
13.50
-
15.00
80
-
10.50
-
12.00
-
13.50
-
15.00
-
16.50
90
-
10.50
-
12.00
-
13.50
-
15.00
-
16.50
-
18.00
100
-
10.50
-
12.00
-
13.50
-
15.00
-
16.50
-
18.00
-
18.00
110
14.50
32.00
-
12.00
-
13.50
-
15.00
-
16.50
-
18.00
-
18.00
120
24.50
42.00
16.00
36.00
-
13.50
-
15.00
-
16.50
-
18.00
-
18.00
-
18.00
130
34.50
52.00
26.00
46.00
-
13.50
-
15.00
-
16.50
-
18.00
-
18.00
-
18.00
140
44.50
62.00
36.00
56.00
21.50
44.00
-
15.00
-
16.50
-
18.00
-
18.00
-
18.00
-
18.00
150
54.50
72.00
46.00
66.00
31.50
54.00
-
15.00
-
16.50
-
18.00
-
18.00
-
18.00
-
18.00
-
18.00
160
64.50
82.00
56.00
76.00
41.50
64.00
27.00
52.00
-
16.50
-
18.00
-
18.00
-
18.00
-
18.00
-
18.00
180
84.50
102.00
76.00
96.00
61.50
84.00
47.00
72.00
56.00
56.00
-
18.00
-
18.00
-
18.00
-
18.00
-
18.00
200
104.50
122.00
96.00
116.00
81.50
104.00
67.00
92.00
48.50
76.00
30.00
60.00
-
18.00
-
18.00
-
18.00
-
18.00
220
124.50
142.00
116.00
136.00
101.50
124.00
87.00
112.00
68.50
96.00
50.00
80.00
34.00
64.00
-
18.00
-
18.00
-
18.00
240
144.50
162.00
136.00
156.00
121.50
144.00
107.00
132.00
88.50
116.00
70.00
100.00
54.00
84.00
38.00
68.00
-
18.00
-
18.00
260
164.50
182.00
156.00
176.00
141.50
164.00
127.00
152.00
108.50
136.00
90.00
120.00
74.00
104.00
58.00
88.00
38.00
68.00
-
18.00
280
184.50
202.00
176.00
196.00
161.50
184.00
147.00
172.00
128.50
156.00
110.00
140.00
94.00
124.00
78.00
108.00
58.00
88.00
38.00
68.00
300
204.50
222.00
196.00
216.00
181.50
204.00
167.00
192.00
148.50
176.00
130.00
160.00
114.00
144.00
98.00
128.00
78.00
108.00
58.00
88.00


Specification for bolts and reference standards

Characteristic Standard
Material Steel
General Requirements As specified in DIN 267 Part 1.
Thread Tolerance 5g6g for property class 12.9; 6ga for other property classes.
Standard ISO 261, ISO 965.
Mechanical Properties Property Class (material) d ≤ M39b: 8.8; 10.9; 12.9
d > M39: as agreed
Standard DIN ISO 898 Part 1
Tolerances on dimensions and form Product Grade A
Standard ISO 4759/1/DIN ISO 4759 Part 1
Surface finish Black oxide (thermal or chemical)
DIN 267 Part 2 shall apply with regard to surface roughness.
DIN 267 Part 19 shall apply with regard to the permissable surface defects.
DIN 267 Part 9 shall apply with regard to electroplating.
If different electroplating or other surface protection is desired, this shall be agreed upn at the time of ordering
Acceptable inspection DIN 267 Part 5 shall apply with regard to acceptance testing.
a   Only for screws without surface protection, 6g makes it possible for normal coating thicknesses to be applied in accordance with DIN 267 Part 9 but the reference line shall not be exceeded. Depending on the coating thickness required, a larger fundamental deviation shall be selected that for the g position. A larger fundamental deviation may impair the stripping strength of the screw/nut connection.
b  In ISO 4762, only up to M36 or below.