ISO INTERNATIONAL STANDARD 8992 Second edition 2005-04-15 Fasteners General requirements for bolts, screws, studs and nuts Elements de fixation — Exigences generales pour vis, goujons et écrous Reference number ISO 8992:2005(E) @ ISO 2005 ISO8992:2005(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 parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In ISO2005 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 @ ISO 2005 - All rights reserved ISO 8992:2005(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 technicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnical committeehasbeen 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. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO 8992 was prepared by Technical Committee IsO/TC 2, Fasteners, Subcommittee SC 7, Reference This second edition cancels and replaces the first edition (isO 8992:1986), which has been technically revised. zalion'ghtsreserved ii Copvriaht International Oraanization for Standardizatior INTERNATIONAL STANDARD ISO 8992:2005(E) Fasteners General requirements for bolts, screws, studs and nuts 1 Scope ThisInternationalStandardspecifiesthegeneral reguirementsforstandardizedbolts,screws,studsandnuts but is also recommended for these non-standardized fasteners. It is intended to be used with reference to the related International Standards on tolerances, mechanical and performance characteristics, geometrical features, surface discontinuities, surface finishes and quality aspects. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. Iso 272, Fasteners — Hexagon products - Widths across flats Iso 885, General purpose bolts and screws — Metric series — Radi under the head Iso 888, Bolts, screws and studs - Nominal lengths, and thread lengths for general purpose bolts Iso