SIST EN ISO 13670:2025

SLOVENSKI STANDARD
01-november-2025
Vezni elementi - Povratni zasekani zatiči - Postopni obojestranski zatiči na eni
četrtini celotne dolžine (ISO 13670:2025)
Fasteners - Reverse-taper grooved pins - One quarter-length progressive grooves on
both sides (ISO 13670:2025)
Befestigungselemente - Gegenläufige Rillenstifte - Progressive Rillen von einem Viertel
der Länge auf beiden Seiten (ISO 13670:2025)
Fixations - Goupilles cannelées inversées - Cannelures progressives sur le quart de la
longueur à chaque extrémité (ISO 13670:2025)
Ta slovenski standard je istoveten z: EN ISO 13670:2025
ICS:
21.060.50 Zatiči, žeblji Pins, nails
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 13670
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2025
EUROPÄISCHE NORM
ICS 21.060.50
English Version
Fasteners - Reverse-taper grooved pins - One quarter-
length progressive grooves on both sides (ISO
13670:2025)
Fixations - Goupilles cannelées inversées - Cannelures Befestigungselemente - Gegenläufige Kerbstifte -
progressives sur le quart de la longueur à chaque Progressive Kerben von einem Viertel der Länge auf
extrémité (ISO 13670:2025) beiden Seiten (ISO 13670:2025)
This European Standard was approved by CEN on 15 August 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 13670:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 13670:2025) 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 March 2026, and conflicting national standards shall
be withdrawn at the latest by March 2026.
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.
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 13670:2025 has been approved by CEN as EN ISO 13670:2025 without any modification.

International
Standard
ISO 13670
First edition
Fasteners — Reverse-taper
2025-09
grooved pins — One quarter-length
progressive grooves on both sides
Fixations — Goupilles cannelées inversées — Cannelures
progressives sur le quart de la longueur à chaque extrémité
Reference number
ISO 13670:2025(en) © ISO 2025
ISO 13670:2025(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
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 13670:2025(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principles of grooved pins and assembly . 2
5 Dimensions . 2
6 Requirements and reference International Standards . 5
7 Labelling on package . 6
8 Designation . 7
Bibliography . 8

iii
ISO 13670:2025(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 document 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).
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 13670:2025(en)
Fasteners — Reverse-taper grooved pins — One quarter-
length progressive grooves on both sides
1 Scope
This document specifies the characteristics of reverse-taper grooved pins with one quarter-length
progressive grooves on both sides (with closed ends), in steel and stainless steel, and with nominal diameters
2 mm to 25 mm.
These grooved pins are designed to fulfil the main following functions:
— relative rotation of the assembled parts,
— locking of two (or more) parts
with an easy installation (due to its symmetrical shape) and a medium level of pull-out resistance (due to the
elastic fit behaviour of the pin).
The general requirements (including functional principles for grooved pins and assembly) are specified in
ISO 13669.
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 1891-4, Fasteners — Vocabulary — Part 4: Control, inspection, delivery, acceptance and quality
ISO 3269, Fasteners — Acceptance inspection
ISO 3506-6, Fasteners — Mechanical properties of corrosion-resistant stainless steel fasteners — Part 6: General
rules for the selection of stainless steels and nickel alloys for fasteners
ISO 4042, Fasteners — Electroplated coating systems
ISO 9717, Metallic and other inorganic coatings — Phosphate conversion coating of metals
ISO 10683, Fasteners — Non-electrolytically applied zinc flake coating systems
ISO 13669, Fasteners — Grooved pins — General requirements
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 13669 apply.
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 13670:2025(en)
4 Principles of grooved pins and assembly
The principles of grooved pins and assembly specified in ISO 13669 shall apply.
5 Dimensions
Dimensions shall be in accordance with Figure 1 and with Tables 1 and 2. The control of the expanded
diameter d and pin straightness t shall be as specified in ISO 13669.
For coated pins, dimensions and tolerances shall apply prior to coating.
Unless otherwise agreed at the time of the order, the pins are manufactured with rounded ends.
a) Pin with rounded ends (RN)
ISO 13670:2025(en)
b) Option: pin with chamfered ends (CH)
Key
1 insertion sides
a
The pin diameter d is only applicable in areas where grooves are not present.
b
The angle of 120° between two grooves applies with a tolerance of ±20° (for the six grooves).
c
The groove angle of 70° (for the six grooves) is a reference dimension, see ISO 13669.
d
The grooves at each end are not requested to be aligned.
Figure 1 — Reverse-taper grooved pin
with one quarter-length progressive grooves on both sides
In accordance with Figure 1, the start of the grooves shall not get into the rounded or chamfered end but
shall remain closed, and shall be positioned at l max. from the edge of rounded or chamfered end as follows:
e
— l ≤ 10 mm l max. = 0,5 mm
e
— 10 mm < l ≤ 26 mm l max. = 1,0 mm
e
— 26 mm < l ≤ 50 mm l max. = 1,5 mm
e
— 50 mm < l ≤
...