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SIST EN ISO 21670:2014

(Main)

Fasteners - Hexagon weld nuts with flange (ISO 21670:2014)

Fasteners - Hexagon weld nuts with flange (ISO 21670:2014)

EN ISO 21670 specifies characteristics for hexagon weld nuts with flange, with sizes M5 to M16 (coarse thread) or D = 8 mm to 16 mm (fine pitch thread), of product grade A. Weld nuts conforming to this International Standard are suitable for use with bolts of property classes up to 10.9 according to ISO 898-1.

Sechskant-Schweißmuttern mit Flansch (ISO 21670:2014)

Diese Internationale Norm legt Eigenschaften von Sechskant-Schweißmuttern mit Flansch mit metrischem Regelgewinde von M5 bis M16 oder metrischem Feingewinde mit Gewinde-Nenndurchmesser D von 8 mm bis 16 mm in Produktklasse A fest.
Schweißmuttern nach dieser Norm sind zur Verschraubung mit Schrauben der Festigkeitsklassen bis einschließlich 10.9 nach ISO 898-1 geeignet.

Fixations - Écrous hexagonaux à souder, à embase plate (ISO 21670:2014)

L'ISO 21670:2014 spécifie les caractéristiques des écrous à souder, à embase, de diamètre de filetage M5 à M16 inclus (pas gros) et de M8 à M16 inclus (pas fin), et de grade A. Les écrous à souder conformes à L'ISO 21670:2014 sont appropriés pour être utilisés avec des vis de classe de qualité jusqu'à 10.9 inclus selon l'ISO 898-1.

Vezni elementi - Šestroba matica s krajcem za privarjenje (ISO 21670:2014)

EN ISO 21670 določa lastnosti šestrobih matic s krajcem za privarjenje velikosti M5 do M16 (grobi navoj) ali premera D = 8 mm do 16 mm (fini navoj) razreda izdelave A. Matice za privarjenje, ki so skladne s tem mednarodnim standardom, so primerne za uporabo z vijaki razredov trdnosti do 10.9 v skladu s standardom ISO 898-1.

General Information

Status
Published
Public Enquiry End Date
28-Feb-2014
Publication Date
09-Jun-2014
ICS
21.060.20 - Nuts
Technical Committee
ISEL - Mechanical elements
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
05-Jun-2014
Due Date
10-Aug-2014
Completion Date
10-Jun-2014
Ref Project
EN ISO 21670:2014 - Fasteners - Hexagon weld nuts with flange (ISO 21670:2014)

Relations

Replaces
SIST EN ISO 21670:2004 - Hexagon weld nuts with flange (ISO 21670:2003)
Effective Date
01-Jul-2014

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SLOVENSKI STANDARD
SIST EN ISO 21670:2014
01-julij-2014
1DGRPHãþD
SIST EN ISO 21670:2004
Vezni elementi - Šestroba matica s krajcem za privarjenje (ISO 21670:2014)
Fasteners - Hexagon weld nuts with flange (ISO 21670:2014)
Sechskant-Schweißmuttern mit Flansch (ISO 21670:2014)
Fixations - Écrous hexagonaux à souder, à embase plate (ISO 21670:2014)
Ta slovenski standard je istoveten z: EN ISO 21670:2014
ICS:
21.060.20 Matice Nuts
SIST EN ISO 21670:2014 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 21670:2014

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SIST EN ISO 21670:2014

EUROPEAN STANDARD
EN ISO 21670

NORME EUROPÉENNE

EUROPÄISCHE NORM
May 2014
ICS 21.060.20 Supersedes EN ISO 21670:2003
English Version
Fasteners - Hexagon weld nuts with flange (ISO 21670:2014)
Fixations - Écrous hexagonaux à souder, à embase plate Mechanische Verbindungselemente - Sechskant-
(ISO 21670:2014) Schweißmuttern mit Flansch (ISO 21670:2014)
This European Standard was approved by CEN on 13 April 2014.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, 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: Avenue Marnix 17, B-1000 Brussels
© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 21670:2014 E
worldwide for CEN national Members.

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SIST EN ISO 21670:2014
EN ISO 21670:2014 (E)
Contents Page
Foreword .3

2

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SIST EN ISO 21670:2014
EN ISO 21670:2014 (E)
Foreword
This document (EN ISO 21670:2014) 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 DIN.
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 November 2014, and conflicting national standards shall be withdrawn
at the latest by November 2014.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 21670:2003.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 21670:2014 has been approved by CEN as EN ISO 21670:2014 without any modification.

3

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SIST EN ISO 21670:2014

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SIST EN ISO 21670:2014
INTERNATIONAL ISO
STANDARD 21670
Second edition
2014-05-15
Fasteners — Hexagon weld nuts with
flange
Fixations — Écrous hexagonaux à souder, à embase plate
Reference number
ISO 21670:2014(E)
©
ISO 2014

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SIST EN ISO 21670:2014
ISO 21670:2014(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2014
All rights reserved. Unless otherwise specified, 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
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2014 – All rights reserved

---------------------- Page: 8 ----------------------

SIST EN ISO 21670:2014
ISO 21670:2014(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Dimensions . 1
4 Technical delivery conditions . 3
4.1 General requirements . 3
4.2 Material . 3
4.3 Tolerances . 3
4.4 Mechanical properties . 3
4.5 Surface finish . 3
4.6 Surface integrity. 4
4.7 Acceptance inspection . 4
5 Designation . 4
6 Marking . 4
7 Connecting dimensions .
...

SLOVENSKI STANDARD
kSIST FprEN ISO 21670:2014
01-februar-2014
Vezni elementi - Šestroba matica s krajcem za privarjenje (ISO/FDIS 21670:2013)
Fasteners - Hexagon weld nuts with flange (ISO/FDIS 21670:2013)
Sechskant-Schweißmuttern mit Flansch (ISO 21670:2013)
Fixations - Écrous hexagonaux à souder, à embase plate (ISO/FDIS 21670:2013)
Ta slovenski standard je istoveten z: FprEN ISO 21670
ICS:
21.060.20 Matice Nuts
kSIST FprEN ISO 21670:2014 en,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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kSIST FprEN ISO 21670:2014


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kSIST FprEN ISO 21670:2014
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 21670
ISO/TC 2/SC 12
Fasteners — Hexagon weld nuts with
Secretariat: DIN
flange
Voting begins on:
2013-12-12
Fixations — Écrous hexagonaux à souder, à embase plate
Voting terminates on:
2014-02-12
Please see the administrative notes on page iii
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
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/FDIS 21670:2014(E)
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. ISO 2014

---------------------- Page: 3 ----------------------

kSIST FprEN ISO 21670:2014
ISO/FDIS 21670:2014(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2014
All rights reserved. Unless otherwise specified, 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
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2014 – All rights reserved

---------------------- Page: 4 ----------------------

kSIST FprEN ISO 21670:2014
ISO/FDIS 21670:2014(E)

ISO/CEN PARALLEL PROCESSING
This final draft has been developed within the International Organization for Standardization (ISO), and pro­
cessed under the ISO-lead mode of collaboration as defined in the Vienna Agreement. The final draft was
established on the basis of comments received during a parallel enquiry on the draft.
This final draft is hereby submitted to the ISO member bodies and to the CEN member bodies for a parallel
two­month approval vote in ISO and formal vote in CEN.
Positive votes shall not be accompanied by comments.
Negative votes shall be accompanied by the relevant technical reasons.
© ISO 2014 – All rights reserved iii

---------------------- Page: 5 ----------------------

kSIST FprEN ISO 21670:2014
ISO/FDIS 21670:2014(E)

Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Dimensions . 1
4 Technical delivery conditions . 3
4.1 General requirements . 3
4.2 Material . 3
4.3 Tolerances . 3
4.4 Mechanical properties . 3
4.5 Surface finish . 3
4.6 Surface integrity. 4
4.7 Acceptance inspection . 4
5 Designation . 4
6 Marking . 4
7 Connecting dimensions . 4
iv © ISO 2014 – All rights reserved

---------------------- Page: 6 ----------------------

kSIST FprEN ISO 21670:2014
ISO/FDIS 21670:2014(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 Dir
...

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----------------------------
1) fub is the nominal tensile strength (Rm) and As the stress area of the bolt.

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Bolt and nut assemblies to this document include washers according to EN 14399-6 or to EN 14399-5 (under the nut only).
NOTE   Attention is drawn to the importance of ensuring that the bolts are correctly used if satisfactory results are to be obtained. For recommendations concerning proper application, reference to EN 1090-2 is made.
The requirements for suitability for preloading are specified in EN 14399-2.
Clamp lengths and grip lengths for the bolt/nut/washer assemblies are given in the normative Annex A.
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1) fub is the nominal tensile strength (Rm) and As the stress area of the bolt.

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SIST
SIST EN ISO 7719:2014(Main)
Prevailing torque type all-metal hexagon regular nuts - Property classes 5, 8 and 10 (ISO 7719:2012)
EN ISO 7719:2012

ISO 7719:2012 specifies the characteristics of prevailing torque type all-metal hexagon regular nuts with threads from M5 up to and including M36, in product grade A for threads up to and including M16 and product grade B for threads above M16, and with property classes 5, 8 and 10.

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