Flowserve ARGUS E25 MOD II - Page 20

20
The torque to tighten the screws or
nuts depends on their size.
The tightening torques in the following
table [Nm] should be considered as a
guide, because in practice the coeffi-
cient of friction may vary substantially.
The following data are based on
a coefficient of friction of 0.1-0.14.
Tighten the screws or nuts to the
specified torque.
Nominal
size
Friction
coefficient
Tightening torque in Newton meters for screw
strength grade
µ
5.6
6.9
8.8
10.9
12.9
M3
0.1
0.5
0.8
1
1.5
1.8
0.14
0.6
1
1
1.9
2.2
M4
0.1
1.2
1.9
2
3.3
4
0.14
1.4
2.3
3
4.1
4.9
M5
0.1
2.3
3.6
5
7
8
0.14
2.8
4.5
6
8.5
10
M6
0.1
3.9
6.3
8
12
14
0.14
4.8
7.7
10
14
17
M8
0.1
9.5
15
20
28
34
0.14
12
19
25
35
41
M10
0.1
19
30
40
56
67
0.14
23
37
49
69
83
M12
0.1
33
52
69
98
115
0.14
40
65
86
120
145