ISO INTERNATIONAL STANDARD 5858 Second edition 1999-11-15 Aerospace Nuts, self-locking, with maximum operating temperature less than or equal to 425 C Procurement specification Aéronautique et espace - Ecrous a freinage interne dont la température maximale d'utilisation est inférieure ou égale a 425 - Spécification d'approvisionnement ISO Referencenumber ISO5858:1999(E) IHSunder Not for Resale ISO 5858:1999(E) Contents Page 1 Scope 2 Normative references 3 Terms and definition 4 Quality assurance. 4.1General, 4.1.1 Manufacturer's approval 4.1.2 Qualification of nuts. 4.1.3 Production acceptance of nuts. 4 4.2Qualification inspection and testconditions. 4.3 Production acceptance inspection and test conditions. 4.4 Use of "statistical process control (SPC)" 5 5 Technical requirements.. ...6 Annex A (normative) Types of permissible surface discontinuity (see 5.1.4).. .25 Annex B (informative) Cross-sectional area formula (see Tables 3 and 4). 26 @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 International OrganizationforStandardization Casepostale56·CH-1211Geneve20·Switzerland Internet [email protected] Printed in Switzerland nal Organization for Standardization @ISO ISO 5858:1999(E) Foreword ISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(lSo member bodies). The work of preparing International Standards is normally carried out through ISO technical 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. 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 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 5858 was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles, Subcommittee SC 4, Aerospace fastener systems. Thissecondeditioncancelsandreplacesthefirstedition(lsO5858:1991),whichhasbeentechnicallyrevised. Annex A forms a normative part of this International Standard. Annex B is for information only. ii Crovrieh l tenatinal Organizatinfor Standardizatin