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DIN 7969-2007
Slotted countersunk head screws for structural steel bolting for supply with or without nuts
Nom
P
α max
α min
M min
M max
b min
b max
dk max
dk min
ds min
ds max
k min
k max
n min
n max
t
M12
1.75
80º
75º
13.7
14.7
22
28
21
20.48
11.3
12.7
6.71
7.29
2.5
3
3
M16
2
80º
75º
18.6
19.6
28
35
28
27.48
15.3
16.7
8.71
9.29
2.5
3
3
M20
2.5
65º
60º
21.4
22.4
32
40
32
31.38
19.16
20.84
11.15
11.85
3
3.5
3.5
M24
3
65º
60º
25.6
26.6
38
50
38
37.38
23.16
24.84
12.65
13.35
3
3.5
3.5
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