ISO 4035:2023 ファスナー — 六角薄ナット (スタイル 0) | 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 2, Fasteners, Subcommittee SC 12, Fasteners with metric internal thread, in collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/TC 185, Fasteners, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).

This fifth edition cancels and replaces the fourth edition (ISO 4035:2012) which has been technically revised.

The main changes are as follows:

• the use of thin nuts and a warning in relation to lower thread stripping resistance have been added in scope;
• nuts with D < M5 and D > M39 (not included in ISO 898-2 and ISO 3506-2) have been dealt with in normative Annex A;
• M7 has been added;
• d_a,max and d_w,min have been specified with two decimal places;
• d_w,min for sizes D ≤ M5 has been changed from s_min – IT16 to s_min – IT15 in order to have a larger bearing surface area and thus less contact pressure;
• for steel nuts, quenching and tempering condition has been specified in accordance with ISO 898-2;
• for stainless steel nuts, grades D4 and D6 and property class 040 have been added;
• non-ferrous metal nuts have been deleted (as a consequence of the withdrawal of ISO 8839);
• specifications for marking and labelling have been added as Clause 6.

1 Scope

This document specifies the characteristics of hexagon thin nuts (style 0), in steel and stainless steel, with metric coarse pitch thread M1,6 to M64, and with product grades A and B.

Thin nuts used as jam nuts are to be assembled together with a regular or high nut.

If in certain cases other specifications are requested, stainless steel grades and property classes can be selected from ISO 3506-2.

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 terminology databases for use in standardization at the following addresses:

Bibliography