ISO 3506-4

Fasteners — Mechanical properties of corrosion-resistant stainless steel fasteners — Part 4: Tapping screws with specified grades and hardness classes

ISO 3506-4:2009 specifies the mechanical properties of tapping screws made of austenitic, martensitic and ferritic steel grades of corrosion-resistant stainless steels, when tested over an ambient temperature range of 10 °C to 35 °C. Properties vary at higher or lower temperatures. It applies to tapping screws with threads from ST2,2 up to and including ST8, in accordance with ISO 1478. It does not apply to screws with special properties such as weldability.

Fixations — Caractéristiques mécaniques des fixations en acier inoxydable résistant à la corrosion — Partie 4: Vis à tôle de grades et classes de dureté spécifiés

L'ISO 3506-4:2009 spécifie les caractéristiques mécaniques des vis à tôle constituées d'aciers inoxydables austénitiques, martensitiques et ferritiques résistant à la corrosion lorsqu'elles sont soumises à essai à une température ambiante comprise entre 10 °C et 35 °C. Ces caractéristiques varient selon la valeur plus ou moins élevée de la température. L'ISO 3506-4:2009 s'applique aux vis à tôle ayant un filetage compris entre ST2,2 et ST8 inclus, conformément à l'ISO 1478. L'ISO 3506-4:2009 ne s'applique pas aux vis possédant des caractéristiques spéciales telles que la soudabilité.

General Information

• Status: Not Published
• ICS: 21.060.10 - Bolts, screws, studs
• Technical Committee: ISO/TC 2 - Fasteners
• Drafting Committee: ISO/TC 2 - Fasteners
• Current Stage: 6000 - International Standard under publication
• Due Date: 19-Dec-2024
• Completion Date: 19-Dec-2024

Relations

• Consolidates: ISO 24259:2022 - Steel strapping for packaging
• Effective Date: 01-Jul-2023
• Consolidates: ISO 20714:2019 - E-liquid — Determination of nicotine, propylene glycol and glycerol in liquids used in electronic nicotine delivery devices — Gas chromatographic method
• Effective Date: 06-Jun-2022
• Revises: ISO 3506-4:2009 - Mechanical properties of corrosion-resistant stainless steel fasteners — Part 4: Tapping screws
• Effective Date: 06-Jun-2022

Standards Content (Sample)

FINAL DRAFT
International
Standard
ISO/FDIS 3506-4
ISO/TC 2
Fasteners — Mechanical properties
Secretariat: DIN
of corrosion-resistant stainless steel
Voting begins on:
fasteners —
2024-10-23
Part 4:
Voting terminates on:
2024-12-18
Tapping screws with specified
grades and hardness classes
Fixations — Caractéristiques mécaniques des fixations en acier
inoxydable résistant à la corrosion —
Partie 4: Vis à tôle de grades et classes de dureté spécifiées
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/CEN PARALLEL PROCESSING LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
ISO/FDIS 3506-4:2024(en) © ISO 2024

FINAL DRAFT
ISO/FDIS 3506-4:2024(en)
International
Standard
ISO/FDIS 3506-4
ISO/TC 2
Fasteners — Mechanical properties
Secretariat: DIN
of corrosion-resistant stainless steel
Voting begins on:
fasteners —
2024-10-23
Part 4:
Voting terminates on:
2024-12-18
Tapping screws with specified
grades and hardness classes
Fixations — Caractéristiques mécaniques des fixations en acier
inoxydable résistant à la corrosion —
Partie 4: Vis à tôle de grades et classes de dureté spécifiées
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
© ISO 2024
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/CEN PARALLEL PROCESSING
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland Reference number
ISO/FDIS 3506-4:2024(en) © ISO 2024

ii
ISO/FDIS 3506-4:2024(en)
Contents Page
Foreword .iv
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Designation system for stainless steel grades and hardness classes . 2
4.1 General .2
4.2 Designation of stainless steel grades (first block) .4
4.3 Designation of hardness classes (second block) .4
5 Materials . 4
5.1 Chemical composition .4
5.2 Heat treatment for martensitic stainless steel tapping screws .5
5.3 Surface condition (finish and/or coating) .5
5.4 Corrosion resistance .6
5.5 Magnetic properties .6
6 Requirements for mechanical, physical and functional properties . 6
6.1 General .6
6.2 Surface hardness for martensitic grades .6
6.3 Core hardness .7
6.4 Thread forming ability .7
6.5 Torsional strength .7
7 Inspection . 8
7.1 Manufacturer’s inspection .8
7.2 Supplier’s inspection .8
7.3 Purchaser’s inspection .8
7.4 Delivery of test results .8
8 Test methods . 8
8.1 General .8
8.2 Hardness test .9
8.2.1 General .9
8.2.2 Surface hardness test .9
8.2.3 Core hardness test .9
8.2.4 Test results and requirements .9
8.3 Drive test .10
8.4 Torsional test.10
9 Marking and labelling .11
9.1 General .11
9.2 Marking on the tapping screws . 12
9.3 Labelling of the packages . 12
Bibliography .13

iii
ISO/FDIS 3506-4:2024(en)
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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
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, 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 third edition cancels and replaces the second edition (ISO 3506-4:2009), which has been technically
revised.
The main changes are as follows:
— annexes common to several parts of the ISO 3506 series have been withdrawn from this document and
are now included in the new ISO 3506-6 which is to be used with this document;
— austenitic stainless steel of grade A8 and duplex (austenitic-ferritic) stainless steels of grades D2 to D8
for hardness classes 20H, 25H and 30H have been added (see Figure 1);
— operational temperature ranges have been clarified (see Clause 1);
— terms and definitions have been added (see Clause 3);
— wording for surface conditions and corrosion resistance have been improved (see 5.3 and 5.4);
— manufacturer’s, supplier’s and purchaser’s inspections have been added (see Clause 7);
— applicability of test methods has been added, and hardness test, torsional test and drive test methods
have been improved (see Clause 8);
— marking and labelling have been improved (see Clause 9);
— structure and content of this document have been brought in line with other parts of ISO 3506 published
recently.
A list of all parts in the ISO 3506 series can be found on the ISO website.
...

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ISO/FDIS 3506-4:2024(en)
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ISO /TC 2/WG 17
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Secretariat: DIN
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Date: 2024-09-26xx
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Fasteners — Mechanical properties of corrosion -resistant stainless
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steel fasteners —
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Part 4: Style Definition
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Tapping screws with specified grades and hardness classes
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Fixations — Caractéristiques mécaniques des fixations en acier inoxydable résistant àlaà la corrosion —Partie
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4: Vis à tôle
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Partie 4: Vis à tôle de grades et classes de dureté spécifiées
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ISO/FDIS 3506-4:2024(Een) Formatted: Font: 11 pt, Bold
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spacing: single
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, Commented [eXtyles1]: The reference "ISO 2024" is to a
withdrawn standard
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'sISO’s member body in the country of the requester.
Formatted: Default Paragraph Font
Formatted: Default Paragraph Font
ISO Copyright Officecopyright office
CP 401 • Ch. de Blandonnet 8
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CH-1214 Vernier, Geneva
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Phone: + 41 22 749 01 11
Formatted: zzCopyright address, Adjust space between
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Email: [e-mail]
and numbers
E-mail: [e-mail]
Website: www.iso.orgwww.iso.org
Commented [eXtyles2]: The URL https://www.iso.org/
has been redirected to https://www.iso.org/home.html. Please
verify the URL.
Published in Switzerland.
Formatted: zzCopyright address, Adjust space between
Latin and Asian text, Adjust space between Asian text
and numbers
Formatted: FooterPageRomanNumber
ii © ISO 2024 – All rights reserved
ii
ISO/FDIS 3506-4:2024(en)
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Line spacing: single, Tab stops: Not at 5.29 cm + 17.2
cm
Contents
Foreword . iv
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Designation system for stainless steel grades and hardness classes . 3
4.1 General. 3
4.2 Designation of stainless steel grades (first block) . 4
4.3 Designation of hardness classes (second block) . 4
5 Materials . 4
5.1 Chemical composition . 4
5.2 Heat treatment for martensitic stainless steel tapping screws . 6
5.3 Surface condition (finish and/or coating) . 6
5.4 Corrosion resistance . 6
5.5 Magnetic properties . 7
6 Requirements for mechanical, physical and functional properties . 7
6.1 General. 7
6.2 Surface hardness for martensitic grades . 7
6.3 Core hardness. 7
6.4 Thread forming ability . 8
6.5 Torsional strength . 8
7 Inspection . 9
7.1 Manufacturer’s inspection . 9
7.2 Supplier’s inspection . 9
7.3 Purchaser’s inspection . 9
7.4 Delivery of test results . 9
8 Test methods . 9
8.1 General. 9
8.2 Hardness test . 9
8.3 Drive test . 11
8.4 Torsional test . 12
9 Marking and labelling . 13
9.1 General. 13
9.2 Marking on the tapping screws . 13
9.3 Labelling of the packages . 13
Bibliography . 15

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© ISO 2024 – All rights reserved
iii
ISO/FDIS 3506-4:2024(Een) Formatted: Font: 11 pt, Bold
Formatted: Font: 11 pt
Formatted: Font: 11 pt
Foreword
Formatted: HeaderCentered, Space After: 0 pt, Line
spacing: single
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 Formatted: Line spacing: single, Adjust space between
Latin and Asian text, Adjust space between Asian text
ISO technical committees. Each member body interested in a subject for which a technical committee has been
and numbers, Tab stops: Not at 0.71 cm + 15.45 cm
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
Formatted: Adjust space between Latin and Asian text,
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Adjust space between Asian text and numbers
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
Formatted: Font: Not Italic
ISO/IEC Directives, Part 2 (see www.iso.org/directiveswww.iso.org/directives).
Formatted: Font: Not Italic
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
Formatted: Default Paragraph Font
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent rights
Formatted: Default Paragraph Font
in respect thereof. As of the date of publication of this document, ISO had not received notice of (a) patent(s)
which may be required to implement this document. However, implementers are cautioned that this may not
Formatted: Default Paragraph Font
represent the latest information, which may be obtained from the patent database available at
Formatted: Default Paragraph Font
www.iso.org/patents.www.iso.org/patents. ISO shall not be held responsible for identifying any or all such
patent rights. Commented [eXtyles3]: Invalid reference: "ISO 3506
series"
Any trade name used in this document is information given for the convenience of users and does not
Formatted: Default Paragraph Font
constitute an endorsement.
Formatted: Default Paragraph Font
Formatted: Default Paragraph Font
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
Formatted: Adjust space between Latin and Asian text,
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
Adjust space between Asian text and numbers, Tab
www.iso.org/iso/foreword.htmlwww.iso.org/iso/foreword.html.
stops: Not at 0.7 cm + 1.4 cm + 2.1 cm + 2.8 cm +
3.5 cm + 4.2 cm + 4.9 cm + 5.6 cm + 6.3 cm + 7 cm
This document was prepared by Technical Committee ISO/TC 2, Fasteners, in collaboration with the European
Commented [eXtyles4]: The reference is to a withdrawn
Committee for Standardization (CEN) Technical Committee CEN/TC 185 Fasteners, in accordance with the
standard which has been replaced
Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
ISO 3506-1, Fasteners — Mechanical properties of corrosion-
resistant stainless steel fasteners — Part 1: Bolts, screws and
This third edition cancels and replaces the second edition (ISO 3506-4:2009), which has been technically
studs with specified grades and property classes
revised.
ISO 3506-2, Fasteners — Mechanical properties of corrosion-
The main changes are as follows: resistant stainless steel fasteners — Part 2: Nuts with
specified grades and property classes

— — annexes common to several parts of the ISO 3506 series have been withdrawn from this document
ISO 3506-3, Mechanical properties of corrosion-resistant
and are now included in the new Part 6 of ISO 3506 which is to be used with this document;
stainless steel fasteners — Part 3: Set screws and similar
fasteners not under tensile stress
— — austenitic stainless steel of grade A8 and duplex (austenitic-ferritic) stainless steels of grades D2 to D8
Formatted: Default Paragraph Font
for hardness classes 20H, 25H and 30H have been added (see Figure 1);
Formatted: Default Paragraph Font
— — operational temperature ranges have been clarified (see Clause 1);
Formatted: Default Paragraph Font
Formatted: Default Paragraph Font
— — terms and definitions have been added (see Clause 3);
Formatted: Default Paragraph Font
— — wording for surface conditions and corrosion resistance have been improved (see 5.3 and 5.4);
Formatted: Default Paragraph Font
Formatted: Default Paragraph Font
— — manufacturer’s, supplier’s and purchaser’s inspections have been added (see Clause 7);
Formatted: FooterPageRomanNumber
iv © ISO 2024 – All rights reserved
iv
ISO/FDIS 3506-4:2024(en)
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Formatted:
...

PROJET FINAL
Norme
internationale
ISO/FDIS 3506-4
ISO/TC 2
Fixations — Caractéristiques
Secrétariat: DIN
mécaniques des fixations en
Début de vote:
acier inoxydable résistant à la
2024-10-23
corrosion —
Vote clos le:
2024-12-18
Partie 4:
Vis à tôle de grades et classes de
dureté spécifiés
Fasteners — Mechanical properties of corrosion-resistant
stainless steel fasteners —
Part 4: Tapping screws with specified grades and hardness classes
LES DESTINATAIRES DU PRÉSENT PROJET SONT
INVITÉS À PRÉSENTER, AVEC LEURS OBSERVATIONS,
NOTIFICATION DES DROITS DE PROPRIÉTÉ DONT ILS
AURAIENT ÉVENTUELLEMENT CONNAISSANCE ET À
FOURNIR UNE DOCUMENTATION EXPLICATIVE.
OUTRE LE FAIT D’ÊTRE EXAMINÉS POUR
ÉTABLIR S’ILS SONT ACCEPTABLES À DES FINS
INDUSTRIELLES, TECHNOLOGIQUES ET COM-MERCIALES,
AINSI QUE DU POINT DE VUE DES UTILISATEURS, LES
PROJETS DE NORMES
TRAITEMENT PARALLÈLE ISO/CEN
INTERNATIONALES DOIVENT PARFOIS ÊTRE CONSIDÉRÉS
DU POINT DE VUE DE LEUR POSSI BILITÉ DE DEVENIR DES
NORMES POUVANT
SERVIR DE RÉFÉRENCE DANS LA RÉGLEMENTATION
NATIONALE.
Numéro de référence
ISO/FDIS 3506-4:2024(fr) © ISO 2024

PROJET FINAL
ISO/FDIS 3506-4:2024(fr)
Norme
internationale
ISO/FDIS 3506-4
ISO/TC 2
Fixations — Caractéristiques
Secrétariat: DIN
mécaniques des fixations en
Début de vote:
acier inoxydable résistant à la
2024-10-23
corrosion —
Vote clos le:
2024-12-18
Partie 4:
Vis à tôle de grades et classes de
dureté spécifiés
Fasteners — Mechanical properties of corrosion-resistant
stainless steel fasteners —
Part 4: Tapping screws with specified grades and hardness classes
LES DESTINATAIRES DU PRÉSENT PROJET SONT
INVITÉS À PRÉSENTER, AVEC LEURS OBSERVATIONS,
NOTIFICATION DES DROITS DE PROPRIÉTÉ DONT ILS
AURAIENT ÉVENTUELLEMENT CONNAISSANCE ET À
FOURNIR UNE DOCUMENTATION EXPLICATIVE.
DOCUMENT PROTÉGÉ PAR COPYRIGHT
OUTRE LE FAIT D’ÊTRE EXAMINÉS POUR
ÉTABLIR S’ILS SONT ACCEPTABLES À DES FINS
© ISO 2024 INDUSTRIELLES, TECHNOLOGIQUES ET COM-MERCIALES,
AINSI QUE DU POINT DE VUE DES UTILISATEURS, LES
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, aucune partie de cette
PROJETS DE NORMES
TRAITEMENT PARALLÈLE ISO/CEN
INTERNATIONALES DOIVENT PARFOIS ÊTRE CONSIDÉRÉS
publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
DU POINT DE VUE DE LEUR POSSI BILITÉ DE DEVENIR DES
y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
NORMES POUVANT
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
SERVIR DE RÉFÉRENCE DANS LA RÉGLEMENTATION
NATIONALE.
ISO copyright office
Case postale 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Genève
Tél.: [phone]
E-mail: [e-mail]
Web: www.iso.org
Publié en Suisse Numéro de référence
ISO/FDIS 3506-4:2024(fr) © ISO 2024

ii
ISO/FDIS 3506-4:2024(fr)
Sommaire Page
Avant-propos .iv
Introduction .vi
1 Domaine d'application . 1
2 Références normatives . 1
3 Termes et définitions . 1
4 Système de désignation pour les grades d'acier inoxydable et classes de dureté . 2
4.1 Généralités .2
4.2 Désignation des grades d’acier inoxydable (premier bloc) .4
4.3 Désignation des classes de dureté (second bloc) .4
5 Matériaux . 4
5.1 Composition chimique .4
5.2 Traitement thermique des vis à tôle en acier inoxydable martensitique .5
5.3 Condition de surface (finition et/ou revêtement) .5
5.4 Résistance à la corrosion .6
5.5 Propriétés magnétiques .6
6 Exigences pour les caractéristiques mécaniques, physiques et fonctionnelles . 6
6.1 Généralités .6
6.2 Dureté en surface pour les grades martensitiques .6
6.3 Dureté à cœur .7
6.4 Capacité de formage du filetage .7
6.5 Résistance à la torsion .7
7 Contrôle . 8
7.1 Contrôle effectué par le fabricant .8
7.2 Contrôle effectué par le fournisseur .8
7.3 Contrôle effectué par le client .8
7.4 Fourniture de résultats d'essai .8
8 Méthodes d'essai . 8
8.1 Généralités .8
8.2 Essais de dureté .9
8.2.1 Généralités .9
8.2.2 Essai de dureté en surface .9
8.2.3 Essai de dureté à cœur .9
8.2.4 Résultats d'essai et exigences .10
8.3 Essai de taraudage .10
8.4 Essai de torsion .10
9 Marquage et étiquetage .11
9.1 Généralités .11
9.2 Marquage sur les vis à tôle . 12
9.3 Étiquetage des conditionnements . 12
Bibliographie .13

iii
ISO/FDIS 3506-4:2024(fr)
Avant-propos
L'ISO (Organisation internationale de normalisation) est une fédération mondiale d'organismes nationaux
de normalisation (comités membres de l'ISO). L'élaboration des Normes internationales est en général
confiée aux comités techniques de l'ISO. Chaque comité membre intéressé par une étude a le droit de faire
partie du comité technique créé à cet effet. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec l'ISO participent également aux travaux. L'ISO collabore étroitement avec
la Commission électrotechnique internationale (IEC) en ce qui concerne la normalisation électrotechnique.
Les procédures utilisées pour élaborer le présent document et celles destinées à sa mise à jour sont
décrites dans les Directives ISO/IEC, Partie 1. Il convient, en particulier, de prendre note des différents
critères d'approbation requis pour les différents types de documents ISO. Le présent document a
été rédigé conformément aux règles de rédaction données dans les Directives ISO/IEC, Partie 2 (voir
www.iso.org/directives).
L'attention est attirée sur le fait que certains des éléments du présent document peuvent faire l'objet de
droits de propriété intellectuelle ou de droits analogues. L'ISO ne saurait être tenue pour responsable
de ne pas avoir identifié de tels droits de propriété et averti de leur existence. Les détails concernant les
références aux droits de propriété intellectuelle ou autres droits analogues identifiés lors de l'élaboration du
document sont indiqués dans l'Introduction et/ou dans la liste des déclarations de brevets reçues par l'ISO
(voir www.iso.org/brevets).
Les appellations commerciales éventuellement mentionnées dans le présent document sont données pour
information, par souci de commodité, à l’intention des utilisateurs et ne sauraient constituer un engagement.
Pour une explication de la nature volontaire des normes, la signification des termes et expressions
spécifiques de l'ISO liés à l'évaluation de la conformité, ou pour toute information au sujet de l'adhésion de
l'ISO aux principes de l’Organisation mondiale du commerce (OMC) concernant les obstacles techniques au
commerce (OTC), voir www.iso.org/avant-propos.
Le présent document a été élaboré par le comité technique ISO/TC 2, Fixations, en collaboration avec le
Comité Européen de Normalisation (CEN) comité technique CEN/TC 185, Fixations, conformément à l'accord
de coopération technique entre l'ISO et le CEN (accord de Vienne).
Cette troisième édition annule et remplace la deuxième édition (ISO 3506-4:2009), qui a fait l’objet d’une
révision technique.
Les principales modifications sont les suivantes:
— les annexes communes à plusieurs parties de la série ISO 3506 ont été retirées du présent document et
sont désormais incluses dans la nouvelle ISO 3506-6 qui est à utiliser avec le présent document;
— l’acier inoxydable austénitique de grade A8 et les aciers inoxydables duplex (austéno-ferritiques) de
grades D2 à D8 pour les classes de dureté 20H, 25H et 30H ont été ajoutés (voir Figure 1);
— les plages de températures d’utilisation ont été clarifiées (voir l’Article 1);
— des termes et des définitions ont été ajoutés (voir l’Article 3);
— la rédaction relative aux conditions de surface et à la résistance à la corrosion a été améliorée (voir 5.3 et 5.4);
— les contrôles par le fabricant, le fournisseur et le client ont été ajoutés (voir l’Article 7);
— les limites d’application des méthodes d’essai ont été ajoutées, et les méthodes d’essai de dureté, de
torsion et de taraudage ont été améliorées (voir l’Article 8);
— le marquage et l’étiquetage ont ét
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