ISO INTERNATIONAL STANDARD 7041 Fourth edition 2012-05-15 Prevailing torque type hexagon nuts (with non-metallic insert), style 2 Property classes 9 and 12 Ecrous hexagonaux autofreinés (a anneau non métallique), style 2 - Classes de qualité 9 et 12 Reference number ISO 7041:2012(E) @ ISO 2012 ISO 7041:2012(E) COPYRIGHTPROTECTEDDOCUMENT ISO2012 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 [email protected] Web www.iso.org Published in Switzerland ii ISO2012-All rights reserved ISO 7041:2012(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies 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/lEc 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. rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO 7041 was prepared by Technical Committee ISO/TC 2,Fasteners, Subcommittee SC 12, Fasteners with metric internal thread. @ ISO 2012 -Allrights reserved ii