ISO INTERNATIONAL STANDARD 1174-2 First edition 1996-12-01 ANsi Interriat Dor Sec Assembly tools for screws and nuts - Driving squares - Part 2: Driving squares for power socket tools Outils de manceuvre pour vis et écrous - Carrésd'entrainement -- Partie 2. Carres d'entrainement pour outils a machine [SO Referencenumber ISO 1174-21996(E) pyright International Organization for Standardization Not for Res ISO 1174-2:1996(E) Foreword IsO (the International Organization for Standardization) is a worldwide fed- eration of national standards bodies (IsO member bodies). The work of preparing International Standards is normally carried out through isO 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 coltaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International avote. International Standard ISO 1174-2 was prepared by Technical Committee ISO/TC 29, Small tools, Subcommittee SC 10, Assembly tools for screws and nuts, pliers and nippers. This first edition of ISO 1174-2 as well as ISO 1174-1 cancels and replaces iSO 1174:1975, which has been technically revised. tools for screws and nuts - Driving squares: Part 1. Driving squares for hand socket tools Part 2: Driving squares for power socket tools AnnexA of thispart ofISO1174 is for information only. @ISO1996 Alt 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 the publisher International Organization for Standardization CasePostale56·CH-1211Geneve20·Switzerland Printed in Switzerland ii ational Organizati r Standardizatior No reproduction or networking permitted without license from IHS Not for Resale ISO 1174-2:1996(E) INTERNATIONALSTANDARD @ISO Assembly tools for screws and nuts -- Driving squares -- Part 2: Driving squares for power socket tools 1 Scope This part of Iso 1174 specifies the dimensions and designation of driving squares for power socket tools. Driving squares for hand socket tools are dealt with in ISO 1174-1. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part of isO 1174. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of IsO 1174 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISo maintain registers of currently valid International Standards IsO 3:1973, Preferred numbers Series of preferred numbers. ISO 286-1:1988, ISO system of limits and fits -- Part 1. Bases of tolerances, deviations and fits. 3 Dimensions 3.1 General Nominal dimensions of driving squares, in millimetres, have been selected from the values of the R 10 series of preferred numbers in accordance with Iso 3. 3.2 Interchangeability and 3.4 so as to allow for interchangeability, whatever the measurement system used 1 Copyright InternationalOrganizationfor Standardization No reproduction or networking permitted without license from IHS Not for Resale