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ISO 5393:2017

Current Revision
Rotary tools for threaded fasteners - Performance test method
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ISO 5393:2017

Rotary tools for threaded fasteners - Performance test method

PUBLISH DATE 2017
ISO 5393:2017

ISO 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.

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