ISO 1174-1:2011
(Main)Assembly tools for screws and nuts - Driving squares - Part 1: Driving squares for hand socket tools
Assembly tools for screws and nuts - Driving squares - Part 1: Driving squares for hand socket tools
ISO 1174-1:2011 specifies the dimensions, separation force and designation of driving squares for hand socket tools.
Outils de manoeuvre pour vis et écrous — Carrés d'entraînement — Partie 1: Carrés d'entraînement pour outils à main
L'ISO 1174-1:2011 spécifie les dimensions, la force d'arrachement et la désignation des carrés d'entraînement pour outils à main.
General Information
- Status
- Published
- Publication Date
- 06-Apr-2011
- 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
- 9093 - International Standard confirmed
- Start Date
- 19-Jul-2022
- Completion Date
- 13-Dec-2025
Relations
- Effective Date
- 18-Dec-2008
Overview
ISO 1174-1:2011 is an international standard developed by the International Organization for Standardization (ISO) that specifies the requirements for driving squares used with hand socket tools. It defines the precise dimensions, separation force, and designation of driving squares designed for assembly tools applied in fastening screws and nuts. This 2011 revision updates and replaces the previous 1996 edition, ensuring enhanced technical accuracy and compatibility.
Driving squares are critical components in hand socket tools, enabling effective torque transmission and reliable fastening in mechanical assembly applications. ISO 1174-1 focuses exclusively on hand-operated tools, while its companion standard, ISO 1174-2, covers power socket tools.
Key Topics
- Nominal Dimensions: Driving square sizes are chosen from ISO preferred number series (R 10 series) ensuring standardized and interchangeable dimensions globally.
- Types of Driving Squares:
- Male squares (Types A and B): Features include ball or plunger retainers for positive coupling.
- Female squares (Types C and D): Designed with specific dimensions to mate with male squares.
- Tolerance and Fit: Manufacturing tolerances align with ISO 286-1 IT11 and IT13 grades to guarantee interchangeability across tools from various manufacturers.
- Separation Force: Minimum forces required to disengage coupled squares are defined by size, ensuring consistent operation and safety:
- 6.3 mm square requires ≥ 4 N
- 10 mm square requires ≥ 11 N
- 12.5 mm square requires ≥ 25 N
- 20 mm square requires ≥ 45 N
- Designation Format: Tools are designated by type, size, and the standard reference to facilitate clear identification. For example, a male driving square type A with a nominal size of 12.5 mm is designated as “Male square ISO 1174-1 – A – 12.5”.
Applications
ISO 1174-1 driving squares are widely used in various industrial and manufacturing sectors including:
- Automotive Assembly – Ensuring standardized tools for tightening and loosening nuts and bolts on hand-operated socket wrenches.
- Machinery Maintenance – Facilitating reliable connection with hand socket tools for mechanical servicing.
- Construction and Engineering – Supporting precise torque transmission in onsite fastening operations.
- Tool Manufacturing – Providing guidelines to tool designers and manufacturers for producing compatible driving squares.
- Tool Calibration and Safety Testing – Establishing minimum separation forces contributes to operational safety and performance validation.
Standardized dimensions and forces improve tool interchangeability, reduce downtime, and enhance worker safety by ensuring that hand socket tools from different origins can be reliably coupled and disengaged under predefined parameters.
Related Standards
- ISO 1174-2:2011 – Driving squares for power socket tools; complementary to Part 1, specifying requirements for powered assemblies.
- ISO 3: Preferred Numbers – Basis for selection of nominal dimensions according to the R 10 series.
- ISO 286-1:2010 – Geometrical product specifications (GPS) for tolerances on linear sizes, a critical normative reference for manufacturing precision.
- ISO/IEC Directives, Part 2 – Governs the drafting and publication of ISO international standards.
By adhering to ISO 1174-1:2011, manufacturers and users of hand socket tools ensure high levels of quality, uniformity, and safety in mechanical assembly operations involving driving squares, supporting efficient global trade and collaboration within tool industries.
Frequently Asked Questions
ISO 1174-1:2011 is a standard published by the International Organization for Standardization (ISO). Its full title is "Assembly tools for screws and nuts - Driving squares - Part 1: Driving squares for hand socket tools". This standard covers: ISO 1174-1:2011 specifies the dimensions, separation force and designation of driving squares for hand socket tools.
ISO 1174-1:2011 specifies the dimensions, separation force and designation of driving squares for hand socket tools.
ISO 1174-1:2011 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 1174-1:2011 has the following relationships with other standards: It is inter standard links to ISO 1174-1:1996. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase ISO 1174-1:2011 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 1174-1
Second edition
2011-04-15
Assembly tools for screws and nuts —
Driving squares —
Part 1:
Driving squares for hand socket tools
Outils de manœuvre pour vis et écrous — Carrés d'entraînement —
Partie 1: Carrés d'entraînement pour outils à main
Reference number
©
ISO 2011
© ISO 2011
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing 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 2011 – All rights reserved
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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
ISO 1174-1 was prepared by Technical Committee ISO/TC 29, Small tools, Subcommittee SC 10, Assembly
tools for screws and nuts, pliers and nippers.
This second edition cancels and replaces the first edition (ISO 1174-1:1996), Table 1 and Figure 2 of which
have been technically revised.
ISO 1174 consists of the following parts, under the general title Assembly tools for screws and nuts — Driving
squares:
⎯ Part 1: Driving squares for hand socket tools
⎯ Part 2: Driving squares for power socket tools
INTERNATIONAL STANDARD ISO 1174-1:2011(E)
Assembly tools for screws and nuts — Driving squares —
Part 1:
Driving squares for hand socket tools
1 Scope
This part of ISO 1174 specifies the dimensions, separation force and designation of driving squares for hand
socket tools.
NOTE Driving squares for power socket tools are dealt with in ISO 1174-2.
2 Normative references
The following referenced documents are indispensable for the application 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 3, Preferred numbers — Series of preferred numbers
ISO 286-1, Geometrical product specifications (GPS) — ISO code system for tolerances on linear sizes —
Part 1: Bases of tolerances, deviations and fits
3 Dimensions
3.1 General
Nominal dimensions of driving squares, in millimetres, have been selected f
...
NORME ISO
INTERNATIONALE 1174-1
Deuxième édition
2011-04-15
Outils de manœuvre pour vis et écrous —
Carrés d'entraînement —
Partie 1:
Carrés d'entraînement pour outils à main
Assembly tools for screws and nuts — Driving squares —
Part 1: Driving squares for hand socket tools
Numéro de référence
©
ISO 2011
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2011
Droits de reproduction réservés. Sauf prescription différente, 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 et les microfilms, sans l'accord écrit
de l'ISO à l'adresse ci-après ou du 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 2011 – Tous droits réservés
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 (CEI) en ce qui concerne la normalisation électrotechnique.
Les Normes internationales sont rédigées conformément aux règles données dans les Directives ISO/CEI,
Partie 2.
La tâche principale des comités techniques est d'élaborer les Normes internationales. Les projets de Normes
internationales adoptés par les comités techniques sont soumis aux comités membres pour vote. Leur
publication comme Normes internationales requiert l'approbation de 75 % au moins des comités membres
votants.
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.
L'ISO 1174-1 a été élaborée par le comité technique ISO/TC 29, Petit outillage, sous-comité SC 10, Outils de
manoeuvre pour vis et écrous, pinces et tenailles.
Cette deuxième édition annule et remplace la première édition (ISO 1174-1:1996), dont le Tableau 1 et la
Figure 2 ont fait l'objet d'une révision technique.
L'ISO 1174 comprend les parties suivantes, présentées sous le titre général Outils de manoeuvre pour vis et
écrous — Carrés d'entraînement:
⎯ Partie 1: Carrés d'entraînement pour outils à main
⎯ Partie 2: Carrés d'entraînement pour outils à machine
NORME INTERNATIONALE ISO 1174-1:2011(F)
Outils de manœuvre pour vis et écrous — Carrés
d'entraînement —
Partie 1:
Carrés d'entraînement pour outils à main
1 Domaine d'application
La présente partie de l'ISO 1174 spécifie les dimensions, la force d'arrachement et la désignation des carrés
d'entraînement pour outils à main.
NOTE Les carrés d'entraînement pour outils à machine sont traités dans l'ISO 1174-2.
2 Références normatives
Les documents de référence suivants sont indispensables pour l'application du présent document. Pour les
références datées, seule l'édition citée s'applique. Pour les références non datées, la dernière édition de la
publication à laquelle il est fait référence (y compris tous les amendements) s'applique.
ISO 3, Nombres normaux — Séries de nombres normaux
ISO 286-1, Spécification géométrique des produits (GPS) — Système de codification ISO pour les tolérances
sur les ta
...














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