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Screwdrivers

Fastener assembly tool standards cover the tools, and their variable parts, that handle the fasteners during their installation. Given the variability within screwdrivers, starting from whether they are machine or hand operated, and continuing down all the way to the bits that actually make contact with the fastener, standardization promotes interchangeability between tools and parts of different manufacturers, and fasteners of yet a different manufacturer. These standards are related to the specifications of screwdrivers and their corresponding tools.

ISO 2380-1:2004

Assembly tools for screws and nuts - Screwdrivers for slotted-head screws - Part 1: Tips for hand- and machine-operated screwdrivers

ISO 2380-1:2004 specifies the shape/form, dimensions and designation of the tips of hand- and machine-operated screwdrivers for slotted-head screws. It also gives the technical specifications and test conditions for the screw-drivers and, in the case of hand-operated screwdrivers, specifies the test torque which the blade-to-handle connection shall withstand.

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ISO 2380-2:2004

Assembly tools for screws and nuts - Screwdrivers for slotted-head screws - Part 2: General requirements, lengths of blades and marking of hand-operated screwdrivers

ISO 2380-2:2004 specifies the general requirements, lengths of blades and the marking of hand-operated screwdrivers for slotted-head screws as specified in ISO 4759-1.

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ISO 5393:2017

Rotary tools for threaded fasteners - Performance test method

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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ISO 8764-2:2004

Assembly tools for screws and nuts - Screwdrivers for cross-recessed head screws - Part 2: General requirements, lengths of blades and marking of hand-operated screwdrivers

ISO 8764-2:2004 specifies general requirements, lengths of blades and marking of hand-operated screw-drivers for H and Z cross-recessed head screws as specified in ISO 4757. The specifications for blade tips are given in ISO 8764-1.

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