ISO 5743:2021
(Main)Pliers and nippers - General technical requirements
Pliers and nippers - General technical requirements
This document specifies the general technical requirements to be met by pliers and nippers. It does not specify insulating or antistatic characteristics of handle coatings. Plastic coatings or plastic sleeves are intended for gripping comfort only. This document is only applicable to pliers for which ISO standards exist.
Pinces et tenailles — Spécifications techniques générales
Le présent document spécifie les exigences techniques générales que doivent respecter les pinces et les tenailles. Il ne spécifie pas les caractéristiques isolante ou antistatique des revêtements de manche. Les revêtements plastiques ou les gaines plastifiées sont seulement destinés à améliorer le confort de manipulation. Le présent document ne s'applique qu'aux pinces pour lesquelles il existe des normes ISO.
General Information
- Status
- Published
- Publication Date
- 22-Nov-2021
- Technical Committee
- ISO/TC 29/SC 10 - Assembly tools for screws and nuts, pliers and nippers
- Drafting Committee
- ISO/TC 29/SC 10 - Assembly tools for screws and nuts, pliers and nippers
- Current Stage
- 6060 - International Standard published
- Start Date
- 23-Nov-2021
- Due Date
- 17-Sep-2022
- Completion Date
- 23-Nov-2021
Relations
- Effective Date
- 23-Apr-2020
Overview
ISO 5743:2021 sets forth the general technical requirements for pliers and nippers, ensuring quality, safety, and usability across compliant tool designs. Published by the International Organization for Standardization (ISO), this standard provides comprehensive guidance on the construction and performance characteristics expected for pliers covered by related ISO standards.
This fourth edition, released in November 2021, supersedes the previous 2004 version with updated specifications-most notably enhancements aimed at preventing accidental finger pinching during tool operation. It excludes insulating or antistatic features of handle coatings, covering only pliers for which existing ISO standards apply.
By following ISO 5743:2021, manufacturers ensure their pliers and nippers meet international benchmarks for mechanical design, durability, and user safety, promoting consistent quality and ease of identification worldwide.
Key Topics
Handle Design
- Handles must provide ergonomic grip and avoid accidental pinching or bruising.
- Sharp edges on handle parts are prohibited; edges should have a radius, bevel, or chamfer > 2 mm to prevent injury.
- For pliers longer than 160 mm, a minimum 8 mm gap between handles is required in outer zones to reduce finger crushing risk.
- Handles covered with plastic grips focus on comfort enhancement, not electrical insulation.
Head and Joints
- Hinges must allow smooth movement with minimal lateral play to ensure precise control.
- Jaws are required to meet hardness requirements: cutting edges at minimum 55 HRC, gripping surfaces at minimum 42 HRC.
- Jaw construction must guarantee contact at the tips for general pliers.
Marking and Identification
- Tools must be marked clearly with manufacturer or supplier name to assure traceability.
- Designation details follow ISO 5742 and include type, dimensions, jaw form, hinge type, handle shape, and application area.
Testing and Compliance
- Specific test forces are defined (e.g., 50 N manual force applied to handles during ergonomic evaluation).
- Plastic coating thickness is included when evaluating handle spacing and opening dimensions.
Applications
ISO 5743:2021 applies to a wide range of hand tools including:
- General-purpose pliers used in electrical, mechanical, and construction work.
- Nippers and cutting pliers for cables and wires across industrial and domestic settings.
- Multi-purpose pliers conforming to ergonomic and safety benchmarks facilitating extended use without strain or injury risks.
Adoption of this standard helps manufacturers produce tools that enhance operator safety by reducing hand injuries and improving handling comfort. Tool distributors and users benefit from standardized designations enabling easier selection, verification, and quality assurance.
Related Standards
ISO 5743 references and complements other ISO standards critical for pliers and nippers, including:
- ISO 5742: Pliers and nippers - Nomenclature
Defines the terminology and classification for various types of pliers covered by ISO. - ISO 5744: Pliers and nippers - Test methods
Specifies test procedures for mechanical properties and durability verification. - ISO 5746: Universal and Lineman’s pliers - Dimensions and test values
Details size requirements and performance standards for certain specialized pliers. - ISO 8976: Multi-purpose pliers - Dimensions and test values
Provides dimensional and functional metrics for multi-adjustable pliers. - ISO 6508-1: Metallic materials - Rockwell hardness test
Defines the method for hardness measurement used to assess plier jaw materials.
By aligning with ISO 5743:2021, manufacturers, suppliers, and users of pliers and nippers promote harmonized product quality, increased safety for end-users, and easier international trade of hand tools. This standard is essential for those aiming to meet globally recognized criteria in hand tool manufacturing and utilization.
ISO 5743:2021 - Pliers and nippers — General technical requirements Released:11/23/2021
ISO 5743:2021 - Pinces et tenailles — Spécifications techniques générales Released:11/23/2021
Frequently Asked Questions
ISO 5743:2021 is a standard published by the International Organization for Standardization (ISO). Its full title is "Pliers and nippers - General technical requirements". This standard covers: This document specifies the general technical requirements to be met by pliers and nippers. It does not specify insulating or antistatic characteristics of handle coatings. Plastic coatings or plastic sleeves are intended for gripping comfort only. This document is only applicable to pliers for which ISO standards exist.
This document specifies the general technical requirements to be met by pliers and nippers. It does not specify insulating or antistatic characteristics of handle coatings. Plastic coatings or plastic sleeves are intended for gripping comfort only. This document is only applicable to pliers for which ISO standards exist.
ISO 5743:2021 is classified under the following ICS (International Classification for Standards) categories: 25.140.30 - Hand-operated tools. The ICS classification helps identify the subject area and facilitates finding related standards.
ISO 5743:2021 has the following relationships with other standards: It is inter standard links to ISO 5743:2004. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase ISO 5743:2021 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of ISO standards.
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 5743
Fourth edition
2021-11
Pliers and nippers — General
technical requirements
Pinces et tenailles — Spécifications techniques générales
Reference number
© 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
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Handles. 1
5 Heads . 3
5.1 Joint . 3
5.2 Jaws . 4
6 Designation . 4
6.1 Nippers. 4
6.2 Gripping and dual-purpose pliers . 4
7 Marking . . 5
Bibliography . 6
iii
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 29, Small tools, Subcommittee SC 10,
Assembly tools for screws and nuts, pliers and nippers.
This fourth edition cancels and replaces the third edition (ISO 5743:2004), which has been technically
revised.
The main changes are as follows:
— requirements against accidental pinching of the hands are more specific.
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
...
NORME ISO
INTERNATIONALE 5743
Quatrième édition
2021-11
Pinces et tenailles — Spécifications
techniques générales
Pliers and nippers — General technical requirements
Numéro de référence
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2021
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, aucune partie de cette
publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Case postale 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Genève
Tél.: +41 22 749 01 11
E-mail: copyright@iso.org
Web: www.iso.org
Publié en Suisse
ii
Sommaire Page
Avant-propos .iv
1 Domaine d'application .1
2 Références normatives .1
3 Termes et définitions . 1
4 Manches . 1
5 Têtes . 3
5.1 Charnière (articulation) . 3
5.2 Becs . 4
6 Désignation . 4
6.1 Pinces . 4
6.2 Pinces de serrage et pinces à double usage . 4
7 Marquage . 5
Bibliographie . 6
iii
Avant-propos
L'ISO (Organisation internationale de normalisation) est une fédération mondiale d'organismes
nationaux de normalisation (comités membres de l'ISO). L'élaboration des Normes internationales est
en général confiée aux comités techniques de l'ISO. Chaque comité membre intéressé par une étude
a le droit de faire partie du comité technique créé à cet effet. Les organisations internationales,
gouvernementales et non gouvernementales, en liaison avec l'ISO participent également aux travaux.
L'ISO collabore étroitement avec la Commission électrotechnique internationale (IEC) en ce qui
concerne la normalisation électrotechnique.
Les procédures utilisées pour élaborer le présent document et celles destinées à sa mise à jour sont
décrites dans les Directives ISO/IEC, Partie 1. Il convient, en particulier, de prendre note des différents
critères d'approbation requis pour les différents types de documents ISO. Le présent document a
été rédigé conformément aux règles de rédaction données dans les Directives ISO/IEC, Partie 2 (voir
www.iso.org/directives).
L'attention est attirée sur le fait que certains des éléments du présent document peuvent faire l'objet de
droits de propriété intellectuelle ou de droits analogues. L'ISO ne saurait être tenue pour responsable
de ne pas avoir identifié de tels droits de propriété et averti de leur existence. Les détails concernant
les références aux droits de propriété intellectuelle ou autres droits analogues identifiés lors de
l'élaboration du document sont indiqués dans l'Introduction et/ou dans la liste des déclarations de
brevets reçues par l'ISO (voir www.iso.org/brevets).
Les appellations commerciales éventuellement mentionnées dans le présent document sont données
pour information, par souci de commodité, à l’intention des utilisateurs et ne sauraient constituer un
engagement.
Pour une explication de la nature volontaire des normes, la signification des termes et expressions
spécifiques de l'ISO liés à l'évaluation de la conformité, ou pour toute information au sujet de l'adhésion
de l'ISO aux principes de l’Organisation mondiale du commerce (OMC) concernant les obstacles
techniques au commerce (OTC), voir www.iso.org/avant-propos.
Le présent document a été élaboré par le comité technique ISO/TC 29, Petit outillage, Sous-comité SC 10,
Outils de manoeuvre pour vis et écrous, pinces et tenailles.
Cette quatrième édition annule et remplace la troisième (ISO 5743:2004), qui a fait l'objet d'une révision
technique.
Les principales modifications sont les suivantes:
— des exigences contre le pincement accidentel des mains sont plus spécifiques.
Il convient que l’utilisateur adresse tout retour d’information ou toute question concernant le présent
document à l’organisme national de normalisation de son pays. Une liste exhaustive desdits organismes
se trouve à l’adresse www.iso.org/fr/members.html.
iv
NORME INTERNATIONALE ISO 5743:2021(F)
Pinces et tenailles — Spécifications techniques générales
1 Domaine d'application
Le présent document spéc
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