ISO 3800:1993

Threaded fasteners — Axial load fatigue testing — Test methods and evaluation of results

Specifies the conditions for carrying out the tests as well as recommendations for the evaluation of the results. Unless otherwise agreed, the tests are of the fluctuating tension type and are carried out at room temperature. The influence of the compliance of clamped parts on the strain of the fastener is not taken into account. The test results can be influenced by the test conditions. For this reason, minimum requirements are specified to reduce this effect. In addition, calibration and centring control methods for the testing apparatus are included.