ISO 16239:2013

Current Revision
Metric series wires for measuring screw threads

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ISO 16239:2013

Metric series wires for measuring screw threads

PUBLISH DATE 2013
ISO 16239:2013

ISO 16239:2013 specifies the material, metric series nominal diameters, diameter tolerances, and designation for screw thread measuring wires.

ISO 16239:2013 is applicable to measure the pitch diameters of:

  • ISO general purpose metric screw threads (M),
  • Unified screw threads (UN),
  • Whitworth pipe threads (G, R), and
  • ISO metric trapezoidal screw threads (Tr) with standard pitches.

These wires are intended for use on screw threads with a small lead angle, less than 5°, and are mainly used to calibrate the pitch diameters of thread plug gauges.

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