ISO INTERNATIONAL STANDARD 12278 First edition 1999-11-01 Aerospace Nuts, barrel, self-locking, floating, self-aligning, with MJ threads, classifications: 900 MPa (at ambient temperature)/235 °C, 1 100 MPa (at ambient temperature)/235 °C, 1 250 MPa (at ambient temperature)/235 °C and 1 550 MPa (at ambient temperature)/235 °C Dimensions Aéronautique et espace- -Ecrous a portée cylindrique, a freinage interne, flottants, orientables, a filetage MJ, classifications: 90o MPa (a température ambiante)/235℃,1100MPa(atempératureambiante)/235℃, 1250MPa(atempératureambiante)/235Cet1550MPa (a température ambiante)/235 ℃Dimensions ISO Reference number ISO12278:1999(E) inationalOrganizationforStandardization Not for Resal ISO 12278:1999(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (isO committees. Each member body interested in a subject for which a technical committee has been established has liaison with ISO, also take part in the work. iSsO 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 3. International Standard ISO 12278 was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles SubcommitteeSC4,Aerospacefastenersystems. ?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 nternationalOrganizationforStandardization Case postale 56·CH-1211Geneve 20·Switzerland Internet [email protected] Printed in Switzerland national Organization for Standardization @ ISO ISO 12278:1999(E) Introduction The dimensions specified in this International Standard have been determined to allow production of a part which Self-locking nuts with maximum operating temperature less than orequalto 425 Procurementspecification. aaza ili etworking permited without license from IHS Not for Resale