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2)Tightening time
Longer tightening time results in increased tightening torque. Excessive tightening, however, adds no value and reduces the life of the tool.
3)Different bolt diameters
The size of the bolt diameter affects the tightening torque.
Generally, as the bolt diameter increases, tightening torque rises
4)Tightening conditions
Tightening torque will vary, even with the same bolt, according to grade, length, and torque coefficient (the fixed coefficient indicated by the manufacturer upon production).
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Tightening torque will vary , even with the same bolting material (e.g. steel), according to the surface fin- ish.
Torque is greatly reduced when the bolt and nut start turning together.
5)Socket play
Torque is lowered as the
6)Switch (Variable speed control trigger) Torque is lowered if the unit is used with the switch not fully pulled out.
7)Effect of Connecting Adaptor
The tightening torque will be lowered through the use of a universal joint or a connecting adaptor.
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