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Screw size
M4
M6
M8
M10
M12
M16
M20
M22
M24
M27
M30
M36
Tab. 2: Installation tightening torques - Strength class 8.8
© Martin Engineering GmbH
4. Tighten the flange-screw connections evenly, see values in
Tab.2.
Standard initial tensioning
force
[kN]
5
12
18
29
35
70
110
130
150
200
245
355
Tightening
torque
[Nm]
3
10
25
49
86
215
420
574
726
1067
1445
2528
24
Initial
tensioning force
[kN]
4
9
16
26
38
72
113
142
163
215
261
382
M3727UK-09/15
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