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Content DescriptionISO 5393:2017 specifies a laboratory performance test method for power assembly tools (referred throughout the document as "tool") for installing threaded fasteners. ISO 5393:2017 provides a method for the measurement of torque repeatability (scatter) - over a range of torque rates as specified in this document, - over a range of torque adjustment as defined by the manufacturer, and - over a number of operating cycles as defined by the manufacturer. ISO 5393:2017 provides a method for the measurement of the precision of the built-in torque measurement system for tools incorporating such a feature. See Annex E. ISO 5393:2017 gives instructions on equipment parameters, what to test for and how to evaluate and present the test data. ISO 5393:2017 is applicable to tools - of any power source, e.g. pneumatic, hydraulic, and electric, including battery-powered, - which apply torque in a generally continuous manner, and - within the torque range 0,5 Nm to 2 000 Nm. Outside this range, it is acceptable to modify the test method providing that the modification is documented in the test report. ISO 5393:2017 is not applicable to - impact or impulse wrenches, - ratchet wrenches or wrenches with ratcheting clutches, and - other tools which advance fasteners in discontinuous increments, overcoming static friction at each increment. ISO 5393:2017 allows a test to be performed at any test torque level; however, in order to minimize the number of test joints necessary for a wide range of test torque levels, a list of preferred test torque levels is provided in Annex A. About ISOISO, the International Organization for Standardization, brings global experts together to agree on the best way of doing things – for anything from making a product to managing a process. As one of the oldest non-governmental international organizations, ISO has enabled trade and cooperation between people and companies all over the world since 1946. The International Standards published by ISO serve to make lives easier, safer and better. |
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