ISO 965-5:2025 ISO 汎用メートルねじ - 公差 - Part 5:亜鉛めっき前の公差位置 h の最大サイズで溶融亜鉛めっきおねじと嵌合するためのめねじのサイズの制限 | ページ 2

Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

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 document 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 second edition cancels and replaces the first edition (ISO 965-5:1998), which has been technically revised. It also incorporates the amendment ISO 965-5:1998/Amd.1:2021.

The main changes are as follows:

• Clauses 1 and 5, including Table 1, “limit deviations” has been replaced by “fundamental deviations”;
• Table 1, a small pitch 1 has been added for the tolerance position AZ, and two pitches (1,25 and 1,5) have been deleted for the tolerance position AX;
• 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;
• Table 3, the large nominal diameters (from 68 mm to 100 mm) have been added, and two small nominal diameters (8 mm and 10 mm) have been deleted;
• Tables 2 and 3, the minimum major diameter columns have been deleted, respectively.

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 minor diameters of ISO general purpose metric internal 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 metric internal threads oversized to tolerance class 6AZ or 6AX to mate with the hot-dip galvanized external threads with maximum size of tolerance position h before galvanizing.

This document is not applicable to internal threads with coating on thread surface. The limits of sizes before coating are decided by agreement between manufacturer and purchaser.

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