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CNS 4409-1981
Hexagon socket head cap screws and large plain washers assemblies
Nom
P
dk max
dk min
e min
k max
k min
s min
s max
t min
h
dc
d1
M2.5
0.45
4.5
4.32
2.3
2.5
2.36
2.02
2.06
1.1
0.8
8
2.21
M3
0.5
5.5
5.32
2.87
3.0
2.86
2.52
2.58
1.3
0.8
9
2.68
M4
0.7
7
6.78
3.44
4.0
3.82
3.02
3.08
2
1
12
3.55
M5
0.8
8.5
8.28
4.58
5.0
4.82
4.02
4.095
2.5
1.6
15
4.48
M6
1
10
9.78
5.72
6.0
5.70
5.02
5.14
3
1.6
18
5.35
M8
1.25
13
12.73
6.86
8.0
7.64
6.02
6.14
4
2
25
7.19
M10
1.5
16
15.73
9.15
10
9.64
8.025
8.175
5
2.5
30
9.03
M12
1.75
18
17.73
11.43
12
11.57
10.025
10.175
6
3
40
10.86
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