This standard provides a test method for determining thetorque-tension relationship of both external and internal metricthreaded fasteners for the purpose of measuring the frictionalcharacteristics of the threaded fasteners. The results obtained bythis test are relevant to the test conditions only and should notbe utilized for specific applications.
The test shall consist of a single installation of the samplefastener in a test fixture using a constant speed power tool. Thetest sample shall be assembled onto an appropriate mating test part(i.e., a nut will be tested by being driven onto a test screw). Thetest sample shall be driven against a test washer as the bearingsurface.