Maintenance
206
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14.3 Tightening Torques
Pos: 40.9 /BA/W artung/Drehmo mente / Anzugs momente/Dreh momente @ 45\ mod_12771029 20578_78.doc @ 410945 @ @ 1
The tightening torque MA is stated in Nm
(unless otherwise indicated).
A = Thread size
(The stability class can be seen on the head of the
screw.)
Ø
5.6 6.8 8.8 10.9 12.9
MA (Nm)
M 4
2.2 3 4.4 5.1
M 5
4.5 5.9 8.7 10
M 6
7.6 10 15 18
M 8
18 25 36 43
M 10
29 37 49 72 84
M12
42 64 85 125 145
M14
100 135 200 235
M14x1.5
145 215 255
M 16
160 210 310 365
M16x1.5
225 330 390
M 20
425 610 710
M 24
730 1050 1220
M 24x1.5
350
M 24x2
800 1150 1350
M 27
1100 1550 1800
M 27x2
1150 1650 1950
M30
1450 2100 2450
NOTE
The table above does not apply to countersunk screws with a hexagonal socket head if the
countersunk screw is tightened with the hexagonal socket head.
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Note
Regularly check that nuts and bolts are tightly in place (approx. every 50 hours) and tighten
them if necessary.
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