IFI-143, Test for Evaluating the Torque-Tension Relationship on Both Externally and Internally Threaded Fasteners


Issued 2002, Reaffirmed 2013



This standard provides a test method for determining the torque-tension relationship on both external and internal threaded fasteners for the purpose of measuring the frictional characteristics of the threaded fasteners. The results obtained by this test are relevant to the test conditions only and should not be utilized for specific applications.