Service manual

2 - 18
SPEC
TIGHTENING TORQUES
GENERAL TIGHTENING TORQUES
This chart specifies tightening torques for
standard fasteners with a standard ISO
thread pitch. Tightening torque specifica-
tions for special components or assemblies
are provided for each chapter of this man-
ual. To avoid warpage, tighten multi-fas-
tener assemblies in a crisscross pattern and
progressive stages until the specified tight-
ening torque is reached. Unless otherwise
specified, tightening torque specifications
require clean, dry threads. Components
should be at room temperature.
A: Width across flats
B: Thread diameter
A
(nut)
B
(bolt)
General tightening
torques
Nm m•kg ft•lb
10 mm 6 mm 6 0.6 4.3
12 mm 8 mm 15 1.5 11
14 mm 10 mm 30 3.0 22
17 mm 12 mm 55 5.5 40
19 mm 14 mm 85 8.5 61
22 mm 16 mm 130 13.0 94
TIGHTENING TORQUES
2