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SLOVENSKI STANDARD
01-september-2022
Nadomešča:
SIST EN ISO 4042:2018
Vezni elementi - Sistemi galvanskih prevlek veznih elementov (ISO 4042:2022)
Fasteners - Electroplated coating systems (ISO 4042:2022)
Verbindungselemente - Galvanisch aufgebrachte Überzugsysteme (ISO 4042: 2022)
Fixations - Systèmes de revêtements électrolytiques (ISO 4042: 2022)
Ta slovenski standard je istoveten z: EN ISO 4042:2022
ICS:
21.060.01 Vezni elementi na splošno Fasteners in general
25.220.40 Kovinske prevleke Metallic coatings
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 4042
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2022
EUROPÄISCHE NORM
ICS 21.060.01 Supersedes EN ISO 4042:2018
English Version
Fasteners - Electroplated coating systems (ISO 4042:2022)
Fixations - Systèmes de revêtements électrolytiques Verbindungselemente - Galvanisch aufgebrachte
(ISO 4042: 2022) Überzugsysteme (ISO 4042: 2022)
This European Standard was approved by CEN on 4 February 2022.
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, Turkey 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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 4042:2022 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 4042:2022) 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 December 2022, and conflicting national standards
shall be withdrawn at the latest by December 2022.
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 4042:2018.
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, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 4042:2022 has been approved by CEN as EN ISO 4042:2022 without any modification.
INTERNATIONAL ISO
STANDARD 4042
Fourth edition
2022-06
Fasteners — Electroplated coating
systems
Fixations — Systèmes de revêtements électrolytiques
Reference number
ISO 4042:2022(E)
ISO 4042:2022(E)
© ISO 2022
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: [email protected]
Website: www.iso.org
Published in Switzerland
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ISO 4042:2022(E)
Contents Page
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 General characteristics of the coating . 2
4.1 Coating metals or alloys and main purposes . 2
4.2 Build-up of basic electroplated coating systems . 3
4.3 Coating systems and coating processes . 4
4.4 Internal hydrogen embrittlement . 4
4.4.1 General . 4
4.4.2 Fasteners with hardness up to 360 HV . 5
4.4.3 Fasteners with hardness above 360 HV and up to 390 HV . 5
4.4.4 Fasteners with hardness above 390 HV . 5
4.4.5 Fasteners in accordance with ISO 898-1, ISO 898-2 and ISO 898-3 . 6
4.4.6 Case-hardened fasteners . . . 7
4.4.7 Work hardened fasteners and fasteners with threads rolled after heat
treatment . 8
4.4.8 Fasteners with bainitic structure . 9
4.5 Baking . 9
5 Corrosion protection and testing .9
5.1 General . 9
5.2 Neutral salt spray test (NSS) for zinc-based coating systems . 10
5.3 Sulfur dioxide test (Kesternich test) . 11
5.4 Bulk handling, automatic processes such as feeding and/or sorting, storage and
transport .12
6 Dimensional requirements and testing .12
6.1 General .12
6.2 Fasteners with ISO metric thread .12
6.2.1 Coating thickness .12
6.2.2 Gaugeability and assemblability . 13
6.3 Other fasteners . 13
6.4 Test methods for thickness determination . 14
7 Mechanical and physical properties and testing .16
7.1 General . 16
7.2 Appearance . 16
7.3 Corrosion resistance related to temperature . 16
7.4 Torque/clamp force relationship . 16
7.5 Determination of hexavalent chromium . 16
8 Applicability of tests .17
8.1 General . 17
8.2 Tests mandatory for each lot . 17
8.3 Tests for in-process control . . 17
8.4 Tests to be performed when specified by the purchaser. 17
9 Designation system .17
9.1 General . 17
9.2 Designation of electroplated coating systems for the order . 18
9.3 Examples of designation of hexavalent chromium free electroplated coating
systems for fasteners . 20
9.4 Designation of fasteners with electroplated coating systems for labelling . 21
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ISO 4042:2022(E)
10 Ordering requirements for electroplating .21
11 Storage conditions .
...