ISO 965-4:2025 ISO 汎用メートルねじ - 公差 - Part 4:亜鉛めっき後に公差位置 H または G に作られためねじと嵌合する溶融亜鉛めっきおねじのサイズの制限 | 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, Part 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, Part 2 (see www.iso.org/directives ).

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This document was prepared by Technical Committee ISO/TC 1, Screw threads.

This third edition cancels and replaces the second edition (ISO 965-4:2021), which has been technically revised.

The main changes are as follows:

• Clauses 1 and 5, including Table 1, “limit deviations” has been replaced by “fundamental deviations” (Clauses 1 and 6, including Table 1, in the previous edition of this document);
• Table 1, a small pitch 1 has been added;
• Table 2, the large nominal diameters (from 68 mm to 100 mm) and the two small nominal diameters (6 mm and 7 mm) have been added.

A list of all parts in the ISO 965 series can be found on the ISO website.

1 Scope

This document specifies the fundamental deviations and limits of sizes for the pitch and major diameters of the hot-dip galvanized metric external threads (M) conforming to ISO 262 (M6 to M68 with the coarse pitches and M72 to M100 with pitch 6) having basic and design profiles in accordance with ISO 68-1.

This document is applicable to the hot-dip galvanized metric external threads undersized to tolerance class 6az before galvanizing to mate with the internal threads made to tolerance position H or G after galvanizing.

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

For the purposes of this document, the terms and definitions given in ISO 5408 apply.

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

Bibliography