ISO INTERNATIONAL STANDARD 4229 Third edition 2017-04 Assembly tools for screws and nuts Single-head engineer's wrenches for lower torque applications Maximum outside dimensions of heads and test torques Outils de manceuvre pour vis et écrous - Clés a fourche simples pour applications aux couples plus faibles - Dimensions extérieures maximales d'encombrement des tetes et couples d'essai Reference number IS0 4229:2017(E) International Organization for Standardization @ IS0 2017 =ZHEJIANG INST OF STANDARDIZATION C1 5956617 IS0 4229:2017(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2017, Published in Switzerland 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 Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org Licensee-ZHEJIANG INST OF STANDARDIZAISQ 3017 - All rights reserVed Not for Resale, 2017/5/16 00:38:39 networking permited without license from IHS IS0 4229:2017(E) Contents Page Foreword ..iv 1 Scope ..1 2 Normative references 3 Terms and definitions 4 Maximum outside dimensions of heads. 5 Technical specifications. 5.1 Hardness. .3 5.2 Torque testing. ..3 6 Designation. 7 Marking ..4 Bibliography ..5 Inteaional oganzation @stS207 - All rights reserved icensee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 ii vided by IHS under I se with ISt ed without license from IHS