General Tightening Torque Specifications

This chart specifies tightening torques for standard fasteners with a standard ISO thread pitch. Tightening torque specifications for special components or assemblies are provided for each chapter of this manual. To avoid warpage, tighten multi-fastener assemblies in a crisscross pattern and progressive stages until the specified tightening torque is reached. Unless otherwise specified, tightening torque specifications require clean, dry threads. Components should be at room temperature.

A: Distance between flats B: Outside thread diameter

A (nut)

B (bolt)

General tightening torques



ft* lb

10 mm

6 mm

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