ISO INTERNATIONAL STANDARD 8764-1 Third edition 2004-04-01 Assembly tools for screws and nuts Screwdrivers for cross-recessed head screws- Part 1: Driver tips OutilsdemanceuvrepourvisetécrousTournevispourvisa empreintecruciforme- Partie1:Extrémitésdetournevis Reference number ISO 8764-1:2004(E) ISO @ISO2004 ISO8764-1:2004(E) PDFdisclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this area Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. @ISO2004 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 copyright office Case postale 56: CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland !! IsO2004-All rightsreserved ISO 8764-1:2004(E) Contents Page Foreword 1 Scope 2 Normative references. 3 Shapesanddimensions 4 Technical requirements. 5 Inspectionofdimensions... 6 Torque test... .9 7 Designation 12 Annex A (informative) Explanation of choice of gauge dimensions forform PH tips. AnnexB (informative)Guidefor inspection gaugesforform PZ tips. ISO 8764-1:2004(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 International Electrotechnical Commission (IEC)onall matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2. 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. 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. ISo8764-1was prepared byTechnical Committee ISO/TC 29,Small tools, Subcommittee SC 10,Assembly toolsfor screws and nuts, pliers and nippers. This third edition cancels and replaces the second edition (IsO 8764-1:1999), which has been technically revised as follows: a designation has been added; in the English version, the termpoint"becomes“tip”and“type"becomes"form"; in the French version, the term“type" becomes “forme". Iso 8764 consists of the following parts, under the general title Assembly tools for screws and nuts- Screwdriversforcross-recessedheadscrews: Part1:Drivertips Part2:General requirements,lengthsofbladesandmarkingofhand-operatedscrewdrivers INTERNATIONALSTANDARD ISO 8764-1:2004(E) Assemblytools forscrews and nutsScrewdriversfor cross-recessedhead screws Part 1: Driver tips 1 Scope This part of Iso 8764 specifies the shapes and dimensions, technical requirements and torque test methods for the tips of hand drivers and of machine-operated bits for cross-recessed head screws. It specifies two forms of driver tips: form PH for form H recesses; form PZ for form Z recesses. H and Z form recesses are specified in IsO 4757. General requirements, lengths of blades and marking of hand-operated screwdrivers are given in IsO 8764-2. 2Normati