Assembly tools for screws and nuts - Combination wrenches - Lengths of wrenches and maximum thickness of heads

ISO 7738:2015 specifies the overall length and the maximum head thickness of combination wrenches, offset (Form A) and offset (Form B). NOTE Combination wrenches are listed in ISO 1703, under designation 1 1 01 05 0 (Form A) and designation 1 1 01 06 0 (Form B).

Outils de manoeuvre pour vis et écrous — Clés mixtes de serrage — Longueurs des clés et épaisseurs maximales des têtes

L'ISO 7738:2015 spécifie les longueurs hors tout et les épaisseurs maximales des têtes des clés mixtes de serrage, coudées (Forme A) ou contre-coudées (Forme B). NOTE Les clés mixtes de serrage sont citées dans la norme ISO 1703, Outils de man?uvre pour vis et écrous ? Désignation et nomenclature, sous les références 1 1 01 05 0 (Forme A) et 1 1 01 06 0 (Forme B).

General Information

Status
Published
Publication Date
14-Apr-2015
Current Stage
9093 - International Standard confirmed
Start Date
29-Oct-2021
Completion Date
13-Dec-2025

Relations

Effective Date
28-Jul-2012

Overview

ISO 7738:2015 is an international standard that specifies the overall lengths and maximum head thicknesses for combination wrenches used in assembling screws and nuts. This standard covers two forms of combination wrenches-offset (Form A) and modified offset (Form B)-to ensure uniformity and compatibility in tool manufacturing and usage. The document is essential for manufacturers, quality control professionals, and users seeking reliable and standardized hand tools.

The standard references key documents such as ISO 691:2005, which sets tolerances for wrench and socket openings, and ISO 1711-1, detailing technical specifications for hand-operated wrenches. ISO 7738:2015 provides updated technical and dimensional guidelines to enhance precision and usability in assembly tools.

Key Topics

  • Dimensions and Lengths: Defines overall wrench lengths categorized into short, medium, and long series, offering detailed metric measurements for various head widths. It includes maximum thickness specifications for wrench heads, improving ergonomic and functional design.
  • Form A and Form B Wrenches: Clarifies the distinction between offset (Form A) and modified offset (Form B) wrenches, allowing users to select tools based on application needs.
  • Tolerance Compliance: Specifies wrench opening tolerances aligned with ISO 691:2005 “Tolerance class 1” series to ensure accurate fitting on screw and nut heads.
  • Technical Specifications: References ISO 1711-1 standards for material, finish, and mechanical properties, promoting durability and consistent performance.
  • Designation and Marking: Outlines how wrenches should be marked permanently with manufacturer details and wrench opening sizes, facilitating identification and quality assurance.
  • Updated Tables and Sizes: Introduces additional wrench sizes expanding the scope compared to previous versions, reflecting industry needs.

Applications

ISO 7738:2015 applies to manufacturers, engineers, and professionals involved in:

  • Producing combination wrenches for industrial, automotive, construction, and maintenance sectors.
  • Quality control processes ensuring tools meet internationally recognized dimensions and tolerances.
  • Procurement and specification of standardized hand tools to enhance compatibility and safety.
  • Tool manufacturers aligning product design with global market standards to improve customer satisfaction and reduce return rates.
  • Technical training and documentation development for assembly tools.

By adhering to ISO 7738:2015, organizations ensure interchangeability of assembly tools, reduce tool wear, and increase efficiency in operations involving screws and nuts.

Related Standards

  • ISO 1703: Specifies designation and nomenclature for assembly tools, including combination wrench classifications relevant to ISO 7738.
  • ISO 691:2005: Defines wrench and socket opening tolerances crucial for precision fitting in combination wrenches.
  • ISO 1711-1: Provides broader technical specifications for hand-operated wrenches and sockets, complementing dimensional requirements in ISO 7738.
  • ISO/IEC Directives: Guides editorial and procedural rules for developing and maintaining ISO standards such as ISO 7738.
  • ISO 272: Relates to hexagon head dimensions, indirectly referenced concerning tooling compatibility.

By integrating ISO 7738:2015 with these standards, stakeholders achieve consistent production quality and optimal tool performance across various assembly applications.


Keywords: ISO 7738:2015, combination wrenches, wrench lengths, head thickness, offset wrench, modified offset wrench, assembly tools, screws and nuts, wrench dimensions, tool standardization, ISO standards, manufacturing precision, hand tool tolerances, ISO 691, ISO 1711-1.

Standard

ISO 7738:2015 - Assembly tools for screws and nuts -- Combination wrenches -- Lengths of wrenches and maximum thickness of heads

English language
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Standard

ISO 7738:2015 - Outils de manoeuvre pour vis et écrous -- Clés mixtes de serrage -- Longueurs des clés et épaisseurs maximales des tetes

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Frequently Asked Questions

ISO 7738:2015 is a standard published by the International Organization for Standardization (ISO). Its full title is "Assembly tools for screws and nuts - Combination wrenches - Lengths of wrenches and maximum thickness of heads". This standard covers: ISO 7738:2015 specifies the overall length and the maximum head thickness of combination wrenches, offset (Form A) and offset (Form B). NOTE Combination wrenches are listed in ISO 1703, under designation 1 1 01 05 0 (Form A) and designation 1 1 01 06 0 (Form B).

ISO 7738:2015 specifies the overall length and the maximum head thickness of combination wrenches, offset (Form A) and offset (Form B). NOTE Combination wrenches are listed in ISO 1703, under designation 1 1 01 05 0 (Form A) and designation 1 1 01 06 0 (Form B).

ISO 7738:2015 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 7738:2015 has the following relationships with other standards: It is inter standard links to ISO 7738:2001. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

You can purchase ISO 7738:2015 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 7738
Fourth edition
2015-05-01
Assembly tools for screws and
nuts — Combination wrenches —
Lengths of wrenches and maximum
thickness of heads
Outils de manoeuvre pour vis et écrous — Clés mixtes de serrage —
Longueurs des clés et épaisseurs maximales des têtes
Reference number
©
ISO 2015
© ISO 2015
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 2015 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Normative reference . 1
3 Dimensions . 1
4 Technical specifications . 1
5 Designation . 1
6 Marking . 2
Bibliography . 4
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 on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT), see the following URL: Foreword — Supplementary information.
The committee responsible for this document is ISO/TC 29, Small tools, Subcommittee SC 10, Assembly
tools for screws an
...


NORME ISO
INTERNATIONALE 7738
Quatrième édition
2015-05-01
Outils de manoeuvre pour vis et
écrous — Clés mixtes de serrage —
Longueurs des clés et épaisseurs
maximales des têtes
Assembly tools for screws and nuts — Combination wrenches —
Lengths of wrenches and maximum thickness of heads
Numéro de référence
©
ISO 2015
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2015
Droits de reproduction réservés. Sauf indication contraire, 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, l’affichage sur
l’internet ou sur un Intranet, sans autorisation écrite préalable. Les demandes d’autorisation peuvent être adressées 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 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
Publié en Suisse
ii © ISO 2015 – Tous droits réservés

Sommaire Page
Avant-propos .iv
1 Domaine d’application . 1
2 Référence normatives . 1
3 Dimensions . 1
4 Spécifications techniques . 1
5 Désignation . 1
6 Marquage . 2
Bibliographie . 4
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 appelée 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 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’OMC concernant
les obstacles techniques au commerce (OTC), voir le lien suivant: Avant-propos — Informations
supplémentaires.
Le présent document a été élaborée par le comité technique ISO/TC 29, Petit outillage, sous-comité SC 10,
Outils de ma
...

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