General Tightening Torque Specifications

TIGHTENING TORQUES

EAS20320

TIGHTENING TORQUES
EAS20330

GENERAL TIGHTENING TORQUE
SPECIFICATIONS
This chart specifies tightening torques for stan-
dard fasteners with a standard ISO thread pitch.
Tightening torque specifications for special com-
ponents or assemblies are provided for each
chapter of this manual. To avoid warpage, tight-
en multi-fastener assemblies in a crisscross pat-
tern and progressive stages until the specified
tightening torque is reached. Unless otherwise
specified, tightening torque specifications re-
quire clean, dry threads. Components should be
at room temperature.

  A. Distance between flats
  B. Outside thread diameter

                       General tightening
 A (nut) B (bolt)          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

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