STD.IS0 B538-ENGL 1999 EOLTSOh 209 920 INTERNATIONAL ISO STANDARD 8538 Second edition 1999-02-01 Aerospace Nuts, hexagonal, self-locking, with counterbore and captive washer, with MJ threads, classifications: 1 100 MPa (at ambient temperature)/235 °C, 1 100 MPa (at ambient temperature)/315 °C and 1 100 MPa (at ambient temperature)/425 °C Dimensions Aeronautique et espace -- Ecrous hexagonaux, a freinage interne, avec chambrage et rondelle captive, a filetage MJ, classifications: 1 100 MPa (atemperatureambiante)/235C,1100MPa(atemperature ambiante/315 C et 1 100 MPa (a temperature ambiante)/425 C - Dimensions This material is reproduced from Iso documents under internationaf Organization for Standardization (isO) Copyright License Number iHS/ICC/1996. Not for resale. No part of these isO documents may be reproduced in any form, electronic retrieval system or otherwise,except as allowed in the copyright law of the country of use, orwiththepriorwrittenconsentof Is0(Casepostale56.1211Geneva20 Switzerland, Fax +412273410 79), IHS or the IS0 Licensor's members. ISo Referencenumber ISO 8538:1999(E) CopYRIGHT International Organization for Standardization STD.1S0 8538-ENGL 1999 4851903 0781645 543 ISO 8538:1999(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 technical committees.Eachmemberbodyinterestedinasubjectforwhichatechnical committeehasbeenestablishedhas liaison with isO, aiso 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 3. 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. International Standard iSO 8538 was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles, Subcommittee SC 4, Aerospace fastener systems. This second edition cancels and replaces the first edition (IsO 8538:1986), which has been technically revised. @ISO1999 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 the publisher. IntemationalOrganizationforStandardization Case postale 56 . CH-1211 Geneve 20 · Switzerland Intemet [email protected] Printed in Switzerland i COPYRIGH ation for Standardization 0781646 STD.ISO 8538-ENGL1999 4851903 4BT @ ISO ISO8538:1999(E) Introduction The dimensions specified in this International Standard have been determined to allow production of a part which will satisfy the requirements of the procurement specification IsO 5858. coPYRIGHT International Organization for Standardization LicensedbyInformationHandlingServices