During the assembly of parts using an electric torque screwdriver, there are many things to consider to achieve proper torque control. Is the joint hard or soft? What material is being used? Is the screw lubricated or treated with a locking patch? One factor that’s often overlooked is the RPM setting of the tool.

Will changes in RPM have a net effect to the torque applied to the joint? The answer in short is yes. RPM settings can be a contributor as to the torque applied to a joint. There are a number of variables to consider. A best practice is to document the settings and ensure they are not altered after everything has been set and validated. It is important to ensure the same settings are used when validating calibration and making correlations.

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