ISO INTERNATIONAL STANDARD 9256 First edition 1993-12-15 Aerospace - Bolts, large hexagonal head, normal or pitch diameter shank, long length MJ threads, metallic material, coated or uncoated, strength classes less than or equal to 1 100 MPa Dimensions Aéronautique et espace - Vis a tete hexagonale large, avec tige normale ou de diametre égal au diametre sur flancs, et filetage MJ long, en matériau métallique, revetues ou non revetues, des classes de résistance inferieures ou égales a 1100 MPa -Dimensions Copyrigh Intemnational Organizatin for Standardizatin No reproduction or networking permited without license from IHS Not for Resale ISO9256:1993(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 technical committees. Each member body interested in a subject for which a technical committee has been established 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. ISO collaborates closely with the International Electrotechnical Commission (lEC)onall matters of electrotechnicalstandardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International a vote. fastener systems. ISO1993 All rights reserved. No part of this pubication may be reproduced or utilized in any form or by, any means, electronic or mechanical, including photocopying and microfilm, without per- mission in writing from the publisher. International Organization for Standardization Case Postale 56 · CH-1211 Geneve 20 : Switzerland Printed in Switzerland ii Copyight Intermational Organization for Standardization No reproduction or networking permitted without license from IHS Not for Resale ISO 9256:1993(E) INTERNATIONAL STANDARD Aerospace -- Bolts, large hexagonal head, normal or pitch diameter shank, long length MJ threads, metallic material, coated or uncoated, strength classes less than or equal to 1 100 MPa Dimensions Scope Members of IEC and ISO maintain registers of cur- 1 rently valid International Standards. This International Standard specifies the dimensions of large hexagonal head bolts, with normal or pitch IsO 286-2:1988,ISO system of limits and fits Part 2: Tables of standard tolerance grades and limit diameter shank,andlonglengthMJthreads,inme tallic material, coated or uncoated, with strength deviations forholesandshafts. classes less than or equal to 1 100 MPa. IsO 3353:1992, Aerospace — Rolled threads for bolts It is intended for the drawing up of aerospace product Lead and runout requirements. standards. IsO 5855-2:1988,Aerospace MJthreads Part 2: Limit dimensions for bolts and nuts. 2 Normative references 3 Configuration and dimensions The following standards contain provisions which through reference in this text, constitute provisions See figures 1 and 2 and table 1. Dimensions and tof of this International Standard. At the time of publi- erances are expressed in millimetres.They are appli- cation, the editions indicated were valid. All standards cable after any surface coating, but before the are subject to revision,and parties to agreements application of any lubricant. based on this International Standard are encouraged toinvestigatethepossibilityofapplyingthemostre Details of form not stated are left to the manufac- cent editions of the standards indicated below. turer's discretion. No reproduction or networking permited without license from IHS Not for Resale