Pset STwrench User Guide
100 (326) 9836 4134 01 Edition 2.9
This is a more accurate way to tighten, as we use additional
information (angle) during the tightening process.
You can detect possible problems on the joint using this method:
Tor
que is correct, but angle is too short:
• Misalignment problem
• The hole is not completely threaded (or it is not deep enough)
• The bolt is stopped by oil in a dead hole
• There is dirt in the threads
• The threads are damaged
• The screw is already tightened
Angle is correct, but torque is too low:
• The thread may be stripped out
• The screw is too soft (tightened over yield)
• Unexpected low µ (friction coefficient)
3. Tightening with torque and additional angle rotation (torque + angle)
The bolt is first tightened to a certain torque and then it is further
tightened to a specific angle.
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