EN ISO 8673:2023
(Main)Fasteners - Hexagon regular nuts (style 1), with fine pitch thread (ISO 8673:2023)
Fasteners - Hexagon regular nuts (style 1), with fine pitch thread (ISO 8673:2023)
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.
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.
Verbindungselemente - Sechskantmuttern (Typ 1), mit Feingewinde (ISO 8673:2023)
Dieses Dokument legt die Eigenschaften von Sechskantmuttern (Typ 1) aus Stahl und nichtrostendem Stahl mit metrischen Feingewinden von 8 mm bis 39 mm und mit Produktklassen A und B fest.
ANMERKUNG Für Muttern mit Größen von D > 39 mm, siehe Anhang A.
Falls in bestimmten Fällen andere Festlegungen benötigt werden, können Festigkeitsklassen und Stahlsorten nichtrostender Stähle aus ISO 898 2 oder ISO 3506 2 entnommen werden.
Fixations - Écrous normaux hexagonaux (style 1), à pas fin (ISO 8673:2023)
Le présent document spécifie les caractéristiques des écrous normaux hexagonaux (style 1), en acier et en acier inoxydable, à filetage métrique à pas fin de diamètres 8 mm à 39 mm, et de grades A et B.
NOTE Pour les écrous de diamètre D > 39 mm, voir l’Annexe A.
Si dans certains cas d’autres spécifications sont requises, les classes de qualité et les grades d’acier inoxydable peuvent être choisis dans l'ISO 898-2 ou l'ISO 3506-2.
Vezni elementi - Šestrobe matice (tip 1), z drobnim metrskim navojem (ISO 8673:2023)
Ta dokument določa značilnosti šestrobih matic (tip 1) iz jekla in nerjavnega jekla, z drobnim metrskim navojem velikosti od 8 mm do 39 mm ter razredoma izdelave A in B.
OPOMBA: Za matice velikosti D > 39 mm glej dodatek A.
Če se v določenih primerih zahtevajo druge specifikacije, je razrede lastnosti in tipe nerjavnega jekla mogoče izbrati v skladu s standardom ISO 898-2 ali ISO 3506-2.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2023
Vezni elementi - Šestrobe matice (tip 1), z drobnim metrskim navojem (ISO
8673:2023)
Fasteners - Hexagon regular nuts (style 1), with fine pitch thread (ISO 8673:2023)
Mechanische Verbindungselemente - Sechskantmuttern (Typ 1), mit Feingewinde (ISO
8673:2023)
Fixations - Écrous normaux hexagonaux (style 1), à pas fin (ISO 8673:2023)
Ta slovenski standard je istoveten z: EN ISO 8673:2023
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.
EN ISO 8673
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2023
EUROPÄISCHE NORM
ICS 21.060.20 Supersedes EN ISO 8673:2012
English Version
Fasteners - Hexagon regular nuts (style 1), with fine pitch
thread (ISO 8673:2023)
Fixations - Écrous normaux hexagonaux (style 1), à pas Mechanische Verbindungselemente -
fin (ISO 8673:2023) Sechskantmuttern (Typ 1), mit Feingewinde (ISO
8673:2023)
This European Standard was approved by CEN on 10 June 2023.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 8673:2023 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 8673:2023) has been prepared by Technical Committee ISO/TC 2 "Fasteners" in
collaboration with Technical Committee CEN/TC 185 “Fasteners” the secretariat of which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by March 2024, and conflicting national standards shall
be withdrawn at the latest by March 2024.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 8673:2012.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 8673:2023 has been approved by CEN as EN ISO 8673:2023 without any modification.
INTERNATIONAL ISO
STANDARD 8673
Fourth edition
2023-08
Fasteners — Hexagon regular nuts
(style 1), with fine pitch thread
Fixations — Écrous normaux hexagonaux (style 1), à pas fin
Reference number
ISO 8673:2023(E)
ISO 8673:2023(E)
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO 8673:2023(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 . 4
6 Marking and labelling . 5
6.1 Marking on product . . 5
6.2 Labelling on package . 5
7 Designation . 5
Annex A (informative) Historical nuts with D > 39 mm, not conforming to ISO 898-2 nor to
ISO 3506-2 . 6
Bibliography . 9
iii
ISO 8673:2023(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 of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
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 fourth edition cancels and replaces the third edition (ISO 8673:2012) which has been technically
revised.
The main changes are as follows:
— nuts with D > 39 mm (with m < 0,8D not conforming to ISO 898-2 nor to ISO 3506-2) have been
min
shifted to informative 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;
— for stainless steel nuts, grades D4 and D6 and property class 80 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.
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
INTERNATIONAL STANDARD ISO 8673:2023(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.
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 terminology 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 8673:2023(E)
4 Dimensions
Dimensions for nuts with sizes 8 mm to 39 mm shall be in accordance with Figures 1 and 2, and with
Tables 1 and 2. Unless otherwise specified at the time of order, the nuts are delivered without washer-
face.
NOTE For nuts with sizes D > 39 mm, see Annex A.
Symbols and descriptions of dimensions are specified in ISO 225.
Figure 1 — Nut without washer-face
Dimensions in millimetres
a
Reference datum for d .
w
Figure 2 — Nut with optional washer-face
ISO 8673:2023(E)
Table 1 — D
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.