Torque testing involves measuring the amount of torque being applied to an object. By measuring and analyzing the torque characteristics in such applications it is possible to accurately determine not only the quality of the part or process, but also the root cause of a wide variety of defects.

Torque testing is essential on products with rotating parts such as bottle caps.

There are several aspects for torque testing to mention and also several points that may make it important:
   1. Keeping torque over a minimum limit to ensure product seal. Proper seal ensures quality and prevents leakage or spilling
   2. Keeping torque under a maximum limit ensures the accessibility of the product for all customers
   3. Keeping torque in a more narrow min-max range demonstrates the consistency of quality

Torque testing can be a part of different processes in the production:
   1. Quality control
          a. Laboratory
          b. Production floor
   2. Maintenance
          a. Machine tuning
          b. Problem shooting
Frequency of testing is usually adapted to the production speed and the sensitivity of the product/procedure.

Selection of the right torque tester is to be based on:
   1. Torque testing purpose (QC or maintenance)
   2. Test frequency
   3. Product value (with automatic torque tester it is possible to save tested samples from wasting)