ISO INTERNATIONAL 8642 STANDARD Second edition 2008-09-01 AerospaceSelf-lockingnutswith maximum operating temperature greater than 425 °C Test methods Aéronautiqueetespace- Ecrousafreinage internedont la températuremaximaled'utilisationestsuperieurea425°C-Methodes d'essai Reference number ISO 8642:2008(E) @ISO 2008 copyrighted by UNE, C/ Genova, 6. 28004 Madrid, Spain (all right 8 00:40:48 UTC 2024 Downloaded/printed for Georgia Institute of Technology. This standard provided by AENOR. No furthe ns authorized. ISO8642:2008(E) PDF disclaimer 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 COPYRIGHTPROTECTEDDOCUMENT @ISO2008 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 @ISO2008-Allrightsreserved copyrighted by UNE, C/ Genova, 6. 28004 Madrid, Spain (all rights reserved); Sun Feb 18 00:40:48 UTC 2024 Downloaded/printed for Georgia Institute of Technologv. This standard provided by AENOR. No further reproductions authorized ISO 8642:2008(E) Contents Page Foreword 1 Scope. 2 Normative references.. 3 Inspectionsandtests 3.1 Hardness test....... 3.2 Bearing surface squarenesstest... 3.3 Axial load test.. 3.4 Wrenchingfeaturetest. 3.5 Torque-out test..... 3.6 Test of no rotationof thecaptive washer ... 3.7 9 3.8 Self-locking torque at ambient temperature .... 10 3.9 Self-locking torque at ambient temperature after heat soak atmaximum operating temperature.. 12 3.10 Permanentsettest. 15 3.11 Vibration test.... 3.12 Swagingtest. 20 ii cb 18 00:40:48 UTC 2024 Downloaded/printed for Georgia Institute of Technologvy. This standard provided by AENOR. No further repro horized ISO 8642:2008(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. InternationalStandards aredraftedinaccordancewiththerulesgiven intheISO/lECDirectives,Part2 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. ISO8642waspreparedbyTechnicalCommitteeISO/TC20,Aircraftandspacevehicles,SubcommitteeSC4, Aerospacefastenersystems. This second edition cancels and replaces the first edition (isO 8642:1986) which has been technically revised iv @ ISO 2008 -All rights reserved uthorizec INTERNATIONAL STANDARD ISO8642:2008(E) Aerospace Self-locking nuts with maximum operating temperature greater than 425 °C Test methods Scope This International Standard specifies test methods for metric self-locking nuts with MJ threads intended for use in aerospace construction at maximum operating temperature greater than 425 C. It describes the test device andthe methodfor eachtest. It applies t