General tightening torques for screw joints
OPM 320 en-GB
72
©
Scania CV AB 2019, Sweden
General tightening torques
for screw joints
Hexagon screws, hexagon
socket screws, Torx screws,
hexagon nuts
Metric thread. Strength class 8.8/8.
Flange screws with hexago-
nal head and hexagonal
flange nuts
Metric thread. Strength class 8.8/8.
Thread
Tightening torque
Nm
Lb-ft
M4
2.9
21
M5
6
4
M6
9.5
7
M8
24
18
M10
47
35
M12
84
62
M14
135
100
M16
210 155
M18
290
214
M20
420
310
M22
580
428
M24
730
538
Thread
Tightening torque
Nm
Lb-ft
M5
6.7
5
M6
10.2
8
M8
26
19
M10
50
37
M12
92
38
M14
149
110
M16
184
136
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