oSIST prEN ISO 8673:2022

SLOVENSKI STANDARD
01-junij-2022
Vezni elementi - Šestrobe matice (tip 1) z drobnim metrskim navojem (ISO/DIS
8673:2022)
Fasteners - Hexagon regular nuts (style 1), with fine pitch thread (ISO/DIS 8673:2022)
Mechanische Verbindungselemente – Sechskantmuttern (Typ 1), mit Feingewinde
(ISO/DIS 8673:2022)
Fixations - Écrous hexagonaux normaux (style 1), à pas fin (ISO/DIS 8673:2022)
Ta slovenski standard je istoveten z: prEN ISO 8673
ICS:
21.040.10 Metrski navoji Metric screw threads
21.060.20 Matice Nuts
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT INTERNATIONAL STANDARD
ISO/DIS 8673
ISO/TC 2/SC 12 Secretariat: DIN
Voting begins on: Voting terminates on:
2022-04-20 2022-07-13
Fasteners — Hexagon regular nuts (style 1), with fine pitch
thread
Fixations — Écrous hexagonaux normaux (style 1), à pas fin
ICS: 21.060.20
This document is circulated as received from the committee secretariat.
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ISO/DIS 8673:2022(E)
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TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
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PROVIDE SUPPORTING DOCUMENTATION. © ISO 2022

ISO/DIS 8673:2022(E)
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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ii
ISO/DIS 8673:2022(E)
Contents Page
Foreword .iv
1  Scope . 1
2  Normative references . 1
3  Terms and definitions . 1
4 Dimensions .2
5  Requirements and reference International Standards . 3
6 Marking and labelling . 4
6.1 Marking on product . . 4
6.2 Labelling on package . 5
7 Designation . 5
Annex A (informative) Nuts with D > 39 mm, not conforming to ISO 898-2 .6
Bibliography . 9
iii
ISO/DIS 8673:2022(E)
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 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).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO's adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 2, Fasteners, Subcommittee SC 12, Fasteners
with metric internal thread.
This fifth edition cancels and replaces the fourth edition (ISO 8673:2012).
The main changes compared to the previous edition are as follows:
— nuts with D > 39 mm (with m < 0,8D not conforming to ISO 898-2) have been shifted to informative
min
Annex A; reference to ISO/TR 16224 for appropriate nut design has been added;
— M18×2 and M22×2 have been added;
— d , d and m have been specified with two decimal places;
a,max w,min w,min
— for steel nuts, quenching and tempering condition has been specified in accordance with ISO 898-2,
and property class 12 has been added;
— for stainless steel nuts, grades D4 and D6 and property class 80 have been added;
— non-ferrous metal nuts have been cancelled (as a consequence of the cancellation of ISO 8839);
— specifications for marking and labelling have been added as Clause 6.
Any feedback or questions on this document should be directed to the user's national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
DRAFT INTERNATIONAL STANDARD ISO/DIS 8673:2022(E)
Fasteners — Hexagon regular nuts (style 1), with fine pitch
thread
1  Scope
This document specifies the characteristics of hexagon regular nuts (style 1), in steel and stainless
steel, with metric fine pitch thread 8 mm to 39 mm, and with product grades A and B.
NOTE For nuts with sizes D > 39 mm, see Annex A (informative).
If in certain cases other specifications are requested, property classes and stainless steel grades can be
selected from ISO 898-2 or 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.
ISO 225, Fasteners — Bolts, screws, studs and nuts — Symbols and descriptions of dimensions
ISO 898-2, Fasteners — Mechanical properties of fasteners made of carbon steel and alloy steel — Part 2:
Nuts with specified property classes
ISO 965-1, ISO general purpose metric screw threads — Tolerances — Part 1: Principles and basic data
ISO 1891-4, Fasteners — Vocabulary — Part 4: Control, inspection, delivery, acceptance and quality
ISO 3269, Fasteners — Acceptance inspection
ISO 3506-2, Fasteners — Mechanical properties of corrosion-resistant stainless steel fasteners — Part 2:
Nuts with specified grades and property classes
ISO 4042, Fasteners — Electroplated coating systems
ISO 4759-1, Tolerances for fasteners — Part 1: Bolts, screws, studs and nuts — Product grades A, B and C
ISO 6157-2, Fasteners — Surface discontinuities — Part 2: Nuts
ISO 8991, Designation system for fasteners
ISO 8992, Fasteners — General requirements for bolts, screws, studs and nuts
ISO 10683, Fasteners — Non-electrolytically applied zinc flake coating systems
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:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
ISO/DIS 8673:2022(E)
4 Dimensions
Dimensions for nuts with sizes 8 mm to 39 mm shall be in accordance with Figures 1 and 2, and wi
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