NTERNATIONAL STANDARD TSO 3508 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION MEKIYHAPOIHAY OPTAHH3ALMI HIO CTAHIAPTH3ALIMN ORGANISATION INTERNATIONALE DE NORMALISATION Thread run-outs for fasteners with thread in accordance with ISO 261 and ISO 262 Filets incomplets pour les elements'de fixation avec un filetage selon iso 261 et Is0 262 First edition -- 1976-02-01 UDC 621.882.082.1 Ref. No. IS0 3508-1976 (E) Descriptors : screws, screw threads, thread run-out, metric system. Price based on 3 pages itted without license from IHS Not for Resale FOREWORD Iso (the International Organization for Standardization) is a worldwide federation of national standards institutes (tsO Member Bodies). The work of developing International Standards is carried out through IsO Technical Committees. Every Member Body interested in a subject for which a Technical Committee has been set up has the right to be represented on that Committee. International organizations, governmental and non-governmental, in liaison with IsO, also take part in the work. Draft International Standards adopted by the Technical Committees are circulated to the Member Bodies for approval before their acceptance as International Standards by the ISO Council. International Standard ISO 3508 was drawn up by Technical Committee ISO/TC 2, Fasteners, and circulated to the Member Bodies in September 1974. It has been approved by the Member Bodies of the following countries : Germany Australia Romania Hungary Austria South Africa, Rep. of Belgium India Sweden Bulgaria Ireland Switzerland Canada New Zealand Turkey Chile Norway United Kingdom Denmark Poland U.S.S.R. Yugoslavia Finland Portugal The Member ,Bodies of the following countries expressed disapproval of the document on technical grounds : France Italy U.S.A. @ International Organization for Standardization, 1976 : Printed in Switzertand Not for Resale ISO 3508-1976 (E) INTERNATIONAL STANDARD Thread run-outs for fasteners with thread in accordance with ISO 261 and 1S0 262 1 SCOPE AND FIELDOF APPLICATION This International Standard specifies thread run-outs for fasteners with thread in accordance with IsO 261, sO general purpose metric screw threads - General plan, and with IsO 262, sO general purpose metric screw threads -- Selected sizes for screws, bolts and nuts. It does not appiy to those threaded fasteners where special requirements are laid down in the product standards. Not for Resale