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Q 144-1999
Hexagon head bolt and external teeth serrated lock washer assemblies
Nom
P
e min
k min
k max
s max
s min
d1 max
d1 min
dc max
dc min
h
Number of teeth min
M3
0.5
5.98
1.8
2.2
5.5
5.2
2.83
2.73
6
5.7
0.4
9
M4
0.7
7.5
2.6
3
7
6.64
3.78
3.66
8
7.64
0.5
11
M5
0.8
8.63
3.26
3.74
8
7.64
4.75
4.57
10
9.64
0.6
11
M6
1
10.89
3.76
4.24
10
9.64
5.71
5.53
11
10.57
0.6
12
M8
1.25
14.2
5.06
5.54
13
12.57
7.64
7.42
15
14.57
0.8
14
M10
1.5
17.59
6.11
6.69
16
15.57
9.59
9.37
18
17.57
1
16
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