SIST EN ISO 13669:2025

Fasteners - Grooved pins - General requirements (ISO 13669:2025)

This document specifies the general characteristics of grooved pins, made of steel and stainless steel, with nominal diameters 1 mm to 25 mm.
These grooved pins are designed to fulfil the main following functions, due to the elastic fit behaviour of the grooves:
—     locking of two (or more) parts,
—     positioning or guiding,
—     relative rotation of the assembled parts.

Verbindungselemente - Kerbstifte - Allgemeine Anforderungen (ISO 13669:2025)

Dieses Dokument legt die allgemeinen Eigenschaften von Kerbstiften aus Stahl und nichtrostendem Stahl mit Nenndurchmessern zwischen 1 mm und 25 mm fest.
Diese Kerbstifte sind aufgrund des elastischen Passverhaltens der Kerben dafür ausgelegt, die folgenden Hauptfunktionen zu übernehmen:
   kraftschlüssiges Verbinden von zwei (oder mehr) Teilen,
   Positionieren oder Führen,
   relative Drehung der zusammengefügten Teile.

Fixations - Goupilles cannelées - Exigences générales (ISO 13669:2025)

Le présent document spécifie les caractéristiques générales des goupilles cannelées, en acier et en acier inoxydable, de diamètre nominal de 1 mm à 25 mm.
Ces goupilles cannelées sont conçues pour remplir les principales fonctions suivantes, grâce au comportement d’ajustement élastique des cannelures:
—     solidarisation de deux (ou plusieurs) pièces,
—     positionnement ou guidage,
—     rotation relative (articulation) entre les pièces assemblées.

Vezni elementi - Zasekani zatiči z utori - Splošne zahteve (ISO 13669:2025)

Ta dokument določa splošne značilnosti zasekanih zatičev z utori, izdelanih iz jekla in nerjavnega jekla, z nazivnimi premeri od 1 mm do 25 mm. Ti zatiči so zasnovani tako, da izpolnjujejo naslednje glavne funkcije (zaradi elastičnega prileganja): –    spajanje dveh (ali več) delov, –    pozicioniranje ali usmerjanje; –    relativno vrtenje sestavljenih delov.

General Information

• Status: Published
• Public Enquiry End Date: 20-Feb-2024
• Publication Date: 20-Aug-2025
• ICS: 21.060.50 - Pins, nails
• Technical Committee: ISEL - Mechanical elements
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 31-Jul-2025
• Due Date: 05-Oct-2025
• Completion Date: 21-Aug-2025
• Ref Project: EN ISO 13669:2025 - Fasteners - Grooved pins - General requirements (ISO 13669:2025)

Overview

EN ISO 13669:2025 - Fasteners: Grooved pins - General requirements is the harmonized European adoption of ISO 13669:2025. It specifies the general characteristics of grooved pins made from steel and stainless steel with nominal diameters from 1 mm to 25 mm. The standard defines geometry, groove types, end forms, functional principles and requirements needed to achieve reliable elastic-fit locking for applications such as locking, positioning, guiding and permitting controlled relative rotation.

Key topics and requirements

• Scope and purpose: General requirements for grooved pins (steel and stainless steel) designed to provide an interference, elastic fit through longitudinal grooves.
• Shapes and ends: Defines pin end styles (rounded, chamfered, pilot point variants) and groove end types (open, closed).
• Groove shapes and symbols: Standardized groove geometries with symbols for identification:
  • Diamond (D) - uniform expanded diameter
  • Oval (O) - symmetrical, progressive expanded diameter
  • Progressive (P) - non‑symmetrical progressive expanded diameter (can be tapered or reverse‑taper)
• Pin types: Parallel grooved, taper grooved, and reverse‑taper grooved pins - each producing a particular expanded diameter profile for specific assembly behaviour.
• Principles for assembly: Explains how the three equidistant (120°) grooves produce an expanded diameter that compresses when inserted into a mating hole to produce elastic locking.
• Dimensions and tolerances: Requirements for nominal diameters, expanded diameter control methods and pin straightness; these ensure interchangeability and reliable fit.
• Mechanical and physical properties: Includes provisions and references for shear resistance, hardness testing and material considerations for non‑standard materials.
• Inspection, marking and delivery: Manufacturer, supplier and purchaser inspection procedures, delivery of test results, and labelling/marking requirements.

Practical applications and who uses it

• Typical uses: locking parts, positioning and guiding components, and enabling controlled relative rotation in assemblies where interference fit and easy installation are required.
• Users:
  • Fastener and component manufacturers (product design and quality control)
  • Mechanical and design engineers specifying or selecting pins for assemblies
  • Procurement and quality inspectors verifying conformity
  • Test laboratories performing hardness and shear tests
• Industries: Automotive, machinery, aerospace subcomponents, industrial equipment and consumer products where reliable pin retention is needed.

Related standards

EN ISO 13669:2025 references and aligns with related standards for testing and inspection:

• ISO 1891-4 - Fasteners vocabulary (control, inspection, delivery)
• ISO 6507-1 - Vickers hardness test
• ISO 8749 - Pins and grooved pins shear test
• ISO 16228 - Types of inspection documents

For engineers and purchasers specifying grooved pins, EN ISO 13669:2025 provides the required product definitions, acceptance tests and inspection criteria to ensure consistent performance and interchangeability.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2025
Vezni elementi - Zasekani zatiči z utori - Splošne zahteve (ISO 13669:2025)
Fasteners - Grooved pins - General requirements (ISO 13669:2025)
Verbindungselemente - Kerbstifte - Allgemeine Anforderungen (ISO 13669:2025)
Fixations - Goupilles cannelées - Exigences générales (ISO 13669:2025)
Ta slovenski standard je istoveten z: EN ISO 13669:2025
ICS:
21.060.50 Zatiči, žeblji Pins, nails
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 13669
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2025
EUROPÄISCHE NORM
ICS 21.060.50
English Version
Fasteners - Grooved pins - General requirements (ISO
13669:2025)
Fixations - Goupilles cannelées - Exigences générales Verbindungselemente - Kerbstifte - Allgemeine
(ISO 13669:2025) Anforderungen (ISO 13669:2025)
This European Standard was approved by CEN on 18 July 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 13669:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 13669:2025) 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 January 2026, and conflicting national standards shall
be withdrawn at the latest by January 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 13669:2025 has been approved by CEN as EN ISO 13669:2025 without any modification.

International
Standard
ISO 13669
First edition
Fasteners — Grooved pins —
2025-07
General requirements
Fixations — Goupilles cannelées — Exigences générales
Reference number
ISO 13669:2025(en) © ISO 2025
ISO 13669:2025(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: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ISO 13669:2025(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Shapes and ends for grooved pins . 2
4.1 Ends for grooved pins .2
4.2 Groove ends .2
4.3 Groove shapes .3
4.3.1 Diamond groove (symbol D) .3
4.3.2 oval groove (symbol O) .3
4.3.3 progressive groove (symbol P) .3
5 Principles for grooved pins and assembly . . 3
5.1 Principles for grooved pins .3
5.2 Assembly .4
6 Dimensions and tolerances . 5
6.1 General .5
6.2 Expanded diameter d and control method .5
6.3 Pin straightness .7
7 Mechanical and physical properties . 7
7.1 General .7
7.2 Shear resistance .7
7.3 Hardness .8
7.4 Pins in materials other than non-heat treated steel or stainless steel .9
8 Inspection . 9
8.1 Manufacturer's inspection .9
8.2 Supplier's inspection .10
8.3 Purchaser's inspection .10
8.4 Delivery of test results .10
9 Marking and labelling . 10
9.1 Marking on grooved pins .10
9.2 Labelling on packages .10
Annex A (informative) Control of straightness for grooved pins.11
Bibliography .16

iii
ISO 13669:2025(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 13669:2025(en)
Fasteners — Grooved pins — General requirements
1 Scope
This document specifies the general characteristics of grooved pins, made of steel and stainless steel, with
nominal diameters 1 mm to 25 mm.
These grooved pins are designed to fulfil the main following functions, due to the elastic fit behaviour of the
grooves:
— locking of two (or more) parts,
— positioning or guiding,
— relative rotation of the assembled parts.
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 6507-1, Metallic materials — Vickers hardness test — Part 1: Test method
ISO 8749, Pins and grooved pins — Shear test
ISO 16228, Fasteners — Types of inspection documents
3 Terms and definitions
For the purposes of this document, the following terms and definitions 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/
3.1
pin
cylindrical or conical shafted fastener designed to be fitted into a hole, which provides functions such as
immobilization by locking parts together, positioning, rotation and/or guiding
3.2
groove
longitudinal indentation into the material of the pin forming two protruding lips along the side of
the groove
ISO 13669:2025(en)
3.3
grooved pin
fastener whose shaft presents three grooves at equidistant 120° intervals resulting in the expanded
diameter, which are compressed when the pin is inserted into a hole smaller than the expanded diameter
but greater than the pin nominal diameter, thus achieving an elastic locking due to interference fit between
this expanded diameter of the pin and the diameter of the hole
3.4
parallel grooved pin
pin with constant grooves along a portion of the shaft or along its whole shaft, resulting in a uniform
expanded diameter
3.5
taper grooved pin
pin with grooves gradually decreasing when considering the insertion side (from the pin end along a portion
of the shaft or along its whole shaft), resulting in a progressive expanded diameter
3.6
reverse-taper grooved pin
pin with grooves gradually increasing when considering the insertion side (from the pin end along a portion
of the shaft), resulting in a progressive expanded diameter
4 Shapes and ends for grooved pins
4.1 Ends for grooved pins
Ends for grooved pins and their symbols are specified in Figure 1.
a)  Rounded end b)  Chamfered end c)  Pilot point with d)  Pilot point with cham-
(symbol RN) (symbol CH) rounded end fered end
(symbol PRN) (symbol PCH)
Figure 1 — Ends for grooved pins
4.2 Groove ends
Groove ends are specified in Figure 2.
a)  Open end b)  Closed end
Figure 2 — Groove ends
ISO 13669:2025(en)
4.3 Groove shapes
4.3.1 Diamond groove (symbol D)
Straight parallel shaped groove forming a uniform expanded diameter along the pin, with open end or
closed end.
4.3.2 oval groove (symbol O)
Symmetrical lip-shaped groove forming a progressive increasing then decreasing expanded diameter along
the pin, with closed end.
4.3.3 progressive groove (symbol P)
Non-symmetrical almond shaped groove forming a progressive increasing or decreasing expanded diameter
along the pin, w
...