Tightening Torque For Nut And Bolt; Connections - PRONAR T680 Operator's Manual

Pronar T680

5.10 TIGHTENING TORQUE FOR NUT AND BOLT

CONNECTIONS

Unless other tightening parameters are given, during maintenance repair work apply
appropriate torque to tighten nut and bolt connections. Recommended tightening torque for
the most frequently used nut and bolt connections are given in table below. Given values
apply to non-lubricated steel bolts.
TABLE 5.7 Tightening torque for nut and bolt connections
THREAD
METRIC
M10
M12
M14
M16
M20
M24
M27
M30
(1)
– strength class according to DIN ISO 898 standard
(1)
5.8
37
64
100
160
300
530
820
1 050
5.38
(1)
8.8
Md [Nm]
49
85
135
210
425
730
1 150
1 450
SECTION 5
(1)
10.9
72
125
200
310
610
1 050
1 650
2 100