EN ISO 3506-3:2025
(Main)Fasteners - Mechanical properties of corrosion resistant stainless steel fasteners - Part 3: Set screws (and similar fasteners not under tensile stress) with specified grades and hardness classes (ISO 3506-3:2025)
Fasteners - Mechanical properties of corrosion resistant stainless steel fasteners - Part 3: Set screws (and similar fasteners not under tensile stress) with specified grades and hardness classes (ISO 3506-3:2025)
This document specifies the mechanical and physical properties of set screws and similar fasteners not under tensile stress, made of corrosion resistant austenitic and duplex stainless steels, with specified grades and hardness classes.
ISO 3506-6 provides general rules and additional technical information on suitable stainless steels and their properties (detailed properties of stainless steel grades, corrosion behaviour with regards to pitting, crevice and intergranular corrosion, magnetic properties, etc.).
WARNING — Set screws conforming to the requirements of this document are tested at the ambient temperature range of 10 °C to 35 °C and are used in application ranging from –20 °C to +150 °C. It is possible that they do not retain the specified mechanical and physical properties at lower and/or elevated temperatures. Therefore, it is the responsibility of the user to determine the appropriate choices based on service environment conditions of the assembly (see also Clauses 5 and 6).
This document applies to set screws and similar fasteners not under tensile stress
— with ISO metric thread in accordance with ISO 68-1,
— with diameter/pitch combinations in accordance with ISO 261 and ISO 262,
— with nominal thread diameter 1,6 mm to 24 mm,
— with thread tolerances in accordance with ISO 965-1 and ISO 965-2,
— with specified hardness classes, and
— of any shape.
NOTE The term set screw is used in the following for all screws and similar fasteners not under tensile stress within the scope of this document.
This document does not apply to screws under tensile stress (see ISO 3506-1). It does not specify requirements for functional properties such as shear strength or weldability.
Mechanische Verbindungselemente - Eigenschaften von Verbindungselementen aus nichtrostenden Stählen - Teil 3: Gewindestifte und ähnliche nicht auf Zug beanspruchte Verbindungselemente (ISO 3506-3:2025)
Dieses Dokument legt die mechanischen und physikalischen Eigenschaften von nicht auf Zug beanspruchten Gewindestiften und ähnlichen Verbindungselementen aus nichtrostenden, korrosionsbeständigen austenitischen Stählen und Duplex-Stählen mit festgelegten Stahlsorten und Härteklassen fest.
WARNUNG — Gewindestifte, die den Anforderungen dieses Dokuments entsprechen, werden in einem Umgebungstemperaturbereich von 10 °C bis 35 °C geprüft und in einem Anwendungsbereich von −20 °C bis +150 °C eingesetzt. Eventuell ändern sich die festgelegten mechanischen und physikalischen Eigenschaften bei höheren und/oder niedrigeren Temperaturen. Es liegt daher in der Verantwortung des Anwenders, auf der Grundlage der Betriebsumgebungsbedingungen der Baugruppe die geeignete Auswahl zu treffen (siehe auch Abschnitt 5 und Abschnitt 6).
Dieses Dokument gilt für Gewindestifte und ähnliche Verbindungselemente, die nicht auf Zug beansprucht werden
mit metrischem ISO-Gewinde nach ISO 68 1,
mit Durchmesser-Steigungs-Kombinationen nach ISO 261 und ISO 262,
mit Gewindenenndurchmessern 1,6 mm bis 24 mm,
mit Gewindetoleranzen nach ISO 965 1 und ISO 965 2,
mit festgelegten Härteklassen, und
mit beliebiger Form.
ANMERKUNG Der Begriff Gewindestift wird im Folgenden für alle nicht auf Zug beanspruchten Schrauben und ähnlichen Verbindungselemente verwendet, die in den Anwendungsbereich dieses Dokuments fallen.
Dieses Dokument gilt nicht für Schrauben, die auf Zug beansprucht werden (siehe ISO 3506 1). Es legt keine Anforderungen für funktionelle Eigenschaften wie Scherfestigkeit oder Schweißbarkeit fest.
Fixations - Caractéristiques mécaniques des fixations en acier inoxydable résistant à la corrosion - Partie 3: Vis sans tête (et fixations similaires non soumises à des contraintes de traction) de grades et classes de dureté spécifiées (ISO 3506-3:2025)
Le présent document spécifie les caractéristiques mécaniques et physiques des vis sans tête et fixations similaires non soumises à des contraintes de traction, fabriquées en aciers inoxydables austénitiques et duplex résistant à la corrosion, de grades et classes de dureté spécifiés.
L’ISO 3506-6 fournit des règles générales et des informations techniques supplémentaires sur les aciers inoxydables appropriés et leurs propriétés (propriétés détaillées des grades d’acier inoxydable, comportement à la corrosion par piqûres, corrosion caverneuse et intergranulaire, magnétisme, etc.).
AVERTISSEMENT — Les vis sans tête conformes aux exigences du présent document sont soumises à essai dans la plage de température ambiante de 10 °C à 35 °C et sont utilisées dans des applications de −20 °C à +150 °C. Elles peuvent ne pas conserver les caractéristiques mécaniques et physiques spécifiées à des températures basses et/ou élevées. Par conséquent, il est de la responsabilité de l’utilisateur de déterminer les choix appropriés en fonction des conditions de l’environnement d’utilisation de l’assemblage (voir également les Articles 5 et 6).
Le présent document s’applique aux vis sans tête et aux fixations similaires non soumises à des contraintes de traction
— à filetage métrique ISO conforme à l’ISO 68-1,
— de combinaisons diamètre/pas conformes à l’ISO 261 et à l’ISO 262,
— de diamètre nominal de filetage 1,6 mm à 24 mm,
— de tolérances de filetage conformes à l’ISO 965-1 et à l’ISO 965-2,
— de classes de dureté spécifiées, et
— de forme quelconque.
NOTE Le terme vis sans tête est utilisé dans ce qui suit pour toutes les vis et fixations similaires non soumises à des contraintes de traction, incluses dans le domaine d’application du présent document.
Le présent document ne s’applique pas aux vis soumises à des contraintes de traction (voir l’ISO 3506-1). Il ne spécifie pas d’exigences pour des caractéristiques fonctionnelles telles que la résistance au cisaillement ou la soudabilité.
Vezni elementi - Mehanske lastnosti veznih elementov iz nerjavnega jekla - 3. del: Navojni zatiči (in podobni vijaki, natezno neobremenjeni) z določenimi ocenami in razredi trdote (ISO 3506-3:2025)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2025
Vezni elementi - Mehanske lastnosti veznih elementov iz nerjavnega jekla - 3. del:
Navojni zatiči (in podobni vijaki, natezno neobremenjeni) z določenimi ocenami in
razredi trdote (ISO 3506-3:2025)
Fasteners - Mechanical properties of corrosion resistant stainless steel fasteners - Part
3: Set screws (and similar fasteners not under tensile stress) with specified grades and
hardness classes (ISO 3506-3:2025)
Mechanische Verbindungselemente - Eigenschaften von Verbindungselementen aus
nichtrostenden Stählen - Teil 3: Gewindestifte und ähnliche nicht auf Zug beanspruchte
Verbindungselemente (ISO 3506-3:2025)
Fixations - Caractéristiques mécaniques des fixations en acier inoxydable résistant à la
corrosion - Partie 3: Vis sans tête (et fixations similaires non soumises à des contraintes
de traction) de grades et classes de dureté spécifiées (ISO 3506-3:2025)
Ta slovenski standard je istoveten z: EN ISO 3506-3:2025
ICS:
21.060.10 Sorniki, vijaki, stebelni vijaki Bolts, screws, studs
77.140.20 Visokokakovostna jekla Stainless steels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 3506-3
EUROPEAN STANDARD
NORME EUROPÉENNE
January 2025
EUROPÄISCHE NORM
ICS 21.060.10 Supersedes EN ISO 3506-3:2009
English Version
Fasteners - Mechanical properties of corrosion resistant
stainless steel fasteners - Part 3: Set screws (and similar
fasteners not under tensile stress) with specified grades
and hardness classes (ISO 3506-3:2025)
Fixations - Caractéristiques mécaniques des fixations Mechanische Verbindungselemente - Eigenschaften
en acier inoxydable résistant à la corrosion - Partie 3: von Verbindungselementen aus nichtrostenden
Vis sans tête (et fixations similaires non soumises à des Stählen - Teil 3: Gewindestifte und ähnliche nicht auf
contraintes de traction) de grades et classes de dureté Zug beanspruchte Verbindungselemente (ISO 3506-
spécifiées (ISO 3506-3:2025) 3:2025)
This European Standard was approved by CEN on 19 January 2025.
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
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 3506-3:2025 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 3506-3:2025) 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 July 2025, and conflicting national standards shall be
withdrawn at the latest by July 2025.
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 3506-3:2009.
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 3506-3:2025 has been approved by CEN as EN ISO 3506-3:2025 without any
modification.
International
Standard
ISO 3506-3
Third edition
Fasteners — Mechanical properties
2025-01
of corrosion resistant stainless steel
fasteners —
Part 3:
Set screws (and similar fasteners not
under tensile stress) with specified
grades and hardness classes
Fixations — Caractéristiques mécaniques des fixations en acier
inoxydable résistant à la corrosion —
Partie 3: Vis sans tête (et fixations similaires non soumises à des
contraintes de traction) de grades et classes de dureté spécifiés
Reference number
ISO 3506-3:2025(en) © ISO 2025
ISO 3506-3:2025(en)
© ISO 2025
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
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Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO 3506-3:2025(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Designation system for stainless steel grades and hardness classes . 2
4.1 General .2
4.2 Designation of stainless steel grades (first block) .3
4.3 Designation of hardness classes (second block) .3
5 Materials . 4
5.1 Chemical composition .4
5.2 Surface condition (finish and/or coating) .5
5.3 Corrosion resistance .6
5.4 Magnetic properties .6
6 Requirements for mechanical and physical properties . 6
6.1 General .6
6.2 Hardness requirements .6
6.3 Proof torque requirements for socket set screws .6
7 Inspection . 7
7.1 Manufacturer’s inspection .7
7.2 Supplier’s inspection .7
7.3 Purchaser’s inspection .7
7.4 Delivery of test results .7
8 Test methods . 7
8.1 General .7
8.2 Hardness test for set screws .7
8.2.1 General .7
8.2.2 Test procedure.7
8.2.3 Test result and requirement.8
8.3 Proof torque test for socket set screws .8
8.3.1 General .8
8.3.2 Test procedure.8
8.3.3 Test result and requirement.10
9 Marking and labelling . 10
9.1 General .10
9.2 Marking on the set screws .10
9.3 Labelling of the packages .11
Bibliography .
...
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