ISO 529:2017 短いマシンタップとハンドタップ | ページ 2

Foreword

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The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, 2 (see www.iso.org/directives ).

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This document was prepared by Technical Committee ISO/TC 29, Small tools, Subcommittee SC 9, Tools with defined cutting edges, cutting items.

This third edition cancels and replaces the second edition (ISO 529:1993), of which it constitutes a minor revision with the following changes:

• added Annex C giving the relationship between the symbols of this document and the symbols according to the ISO 13399 series.

1 Scope

This document 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.

This document 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).

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

3 Terms and definitions

No terms and definitions are listed in this document.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

Bibliography