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ISO 529:2017

Current Revision
Short machine taps and hand taps
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ISO 529:2017

Short machine taps and hand taps

PUBLISH DATE 2017
ISO 529:2017

ISO 529:2017 specifies the general dimensions of short machine taps and hand taps. These dimensions, established as functions of the thread diameter and pitch, are the following:

  • length of thread (maximum);
  • overall length;
  • shank diameter and dimensions of driving square;
  • dimensions of the connecting portion between the shank and threaded part.

ISO 529:2017 is applicable to taps intended for cutting the following threads:

a) ISO metric threads:

  • coarse pitch;
  • fine pitch;

b) ISO inch threads:

  • "Unified Coarse" series (UNC) and "Unified Fine" series (UNF);

c) Inch threads, non-recommended:

  • "British Standard Whitworth" (BSW) and "British Standard Fine" (BSF);
  • "British Association" (BA).

NOTE 1: The overall length, thread length and diameters of shank for taps whose thread diameter and pitch are not listed in tables are given in Table A.1.

NOTE 2: Annex B gives an abstract from ISO 237 for shank diameters and size of driving squares, for information.

NOTE 3: Technical specifications for taps covered by this document (including marking) are given in ISO 8830.

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