International Standard
ISO 529:2017
Short machine taps and hand taps
Reference number
ISO 529:2017
Edition 3
International Standard
Read sample
ISO 529:2017
Published (Edition 3, 2017)
This standard was last reviewed and confirmed in 2022. Therefore this version remains current.

ISO 529:2017

ISO 529:2017
CHF 129
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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.

General information

  •  : Published
     : 2017-03
    : International Standard confirmed [90.93]
  •  : 3
     : 26
  • ISO/TC 29/SC 9
  • RSS updates

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