EN ISO 19957:2021

SLOVENSKI STANDARD
01-november-2021
Nadomešča:
SIST EN ISO 19957:2005
SIST EN ISO 19957:2005/AC:2007
Obutev - Preskusne metode za pete - Vzdržljivost žeblja za pritrjevanje pete (ISO
19957:2021)
Footwear - Test methods for heels - Heel pin holding strength (ISO 19957:2021)
Schuhe - Prüfverfahren für Absätze - Absatznagel-Haltefestigkeit (ISO 19957:2021)
Chaussures - Méthodes d'essai relatives aux talons - Résistance à l'arrachement de
pointe à talon (ISO 19957:2021)
Ta slovenski standard je istoveten z: EN ISO 19957:2021
ICS:
61.060 Obuvala Footwear
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 19957
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2021
EUROPÄISCHE NORM
ICS 61.060 Supersedes EN ISO 19957:2004, EN ISO
19957:2004/AC:2006
English Version
Footwear - Test methods for heels - Heel pin holding
strength (ISO 19957:2021)
Chaussures - Méthodes d'essai relatives aux talons - Schuhe - Prüfverfahren für Absätze - Absatznagel-
Résistance à l'arrachement de pointe à talon (ISO Haltefestigkeit (ISO 19957:2021)
19957:2021)
This European Standard was approved by CEN on 27 August 2021.

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
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 19957:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 19957:2021) has been prepared by Technical Committee ISO/TC 216
"Footwear" in collaboration with Technical Committee CEN/TC 309 “Footwear” the secretariat of which
is held by UNE.
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 2022, and conflicting national standards shall
be withdrawn at the latest by March 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 19957:2004.
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 19957:2021 has been approved by CEN as EN ISO 19957:2021 without any modification.

INTERNATIONAL ISO
STANDARD 19957
Second edition
2021-09
Footwear — Test methods for heels —
Heel pin holding strength
Chaussures — Méthodes d'essai relatives aux talons — Résistance à
l'arrachement de pointe à talon
Reference number
ISO 19957:2021(E)
©
ISO 2021
ISO 19957:2021(E)
© ISO 2021
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 2021 – All rights reserved

ISO 19957:2021(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Apparatus and material . 1
5 Sampling and preparation . 2
5.1 Number of test specimens . 2
5.2 Preparation . 2
5.2.1 To measure heel pin holding properties of heel materials . 2
5.2.2 To test a made shoe . 3
5.2.3 Attachment to tensile testing machine . 3
6 Test method . 4
6.1 Principle . 4
6.2 Procedure . 4
7 Expression of results . 6
7.1 Heel pin holding strength of the heel material . 6
7.2 Average depth of pin penetration . 6
7.3 Heel nailing of commercial production . 6
8 Test report . 6
ISO 19957:2021(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 Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
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 216, Footwear, in collaboration with
the European Committee for Standardization (CEN) Technical Committee CEN/TC 309, Footwear, in
accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This second edition cancels and replaces the first edition (ISO 19957:2004), which has been technically
revised. It also incorporates the Technical Corrigendum ISO 19957:2004/Cor 1:2005.
The main changes compared to the previous edition are as follows:
— small correction in the formula of the calculation of heel pin holding strength, given in 7.1;
— the title of Clause 5 has been changed from “Sampling and conditioning” to “Sampling and
preparation”;
— two figures have been added to illustrate how the sample is clamped between the two jaws of the
tensile testing machine;
— some editorial changes and wording revision to clarify the text.
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 © ISO 2021 – All rights reserved

INTERNATIONAL STANDARD ISO 19957:2021(E)
Footwear — Test methods for heels — Heel pin holding
strength
1 Scope
This document specifies a test method for measuring the force required to pull a single heel pin out of a
heel. This test method is used both to measure the heel pin holding strength of heel materials by using
a standard heel pin and a method of insertion, and to assess the heel nailing of commercial production.
This test method is applicable to testing plastics and wooden heels for women’s footwear. Heels
composed of layers of fibreboard or leather and low plastics heels for men’s footwear cannot be tested
by this method.
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 7500-1, Metallic materials — Calibration and verification of static uniaxial testing machines — Part 1:
Tension/compression testing machines — Calibration and verification of the force-measuring system
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
heel pin holding strength
force required to pull a standard pin out of the heel material divided by the effective length of pin
buttressing in the material, expressed as N/mm
4 Apparatus and material
The following apparatus and material shall be used:
4.1 Tensile testing machine, in accordance with ISO 7500-1, class 2, with a range of approximat
...