ISO INTERNATIONAL STANDARD 5855-2 Third edition 1999-10-15 AerospaceMJthreads - Part 2: Limit dimensions for bolts and nuts Aéronautique et espace-Filetage MJ- Partie 2: Dimensions limites pour vis et écrous ISO Reference number ISO 5855-2:1999(E) rwintk1nfl ISO 5855-2:1999(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 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 International Standard ISO 5855-2 was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles, SubcommitteeSC4, Aerospacefastenersystems. This third edition cancels and replaces the second edition (isO 5855-2:1988), of which it constitutes a technical revision. IsO5855consists of thefollowingparts,under thegeneral titleAerospaceMJ threads: 一 Part 1:General requirements Part2:Limit dimensions forbolts and nuts Part3:Limitdimensionsforfittingsforfluidsystems ?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 InternationalOrganizationforStandardization Case postale 56CH-1211 Geneve 20·Switzerland Internet [email protected] Printed in Switzerland ii rwintk1nff INTERNATIONALSTANDARD @ISO ISO5855-2:1999(E) AerospaceMJthreads- Part 2: Limitdimensionsforboltsandnuts 1 Scope This part of ISO 5855 specifies limit dimensions of MJ threads for bolts and nuts of nominal diameter 1,6 mm to 39 mm for aerospace construction. 2 Normative references part of isO 5855.For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of isO 5855 are encouraged to investigate the possibility of of the normative document referred to applies. Members of IsO and IEC maintain registers of currently valid InternationalStandards. IsO965-1:1998,isO general-purpose metric screw threads—Tolerances-Part 1:Principles and basic data. ISO5855-1:1999,Aerospace—MJthreads-Part1:Generalrequirements. 3 Nominal diameters and pitches See Table 1. Table1-Nominal diametersandpitches Dimensions in millimetres Nominal diameter Pitch Nominal diameter Pitch dor D P dor D P 1,6 0,35 14 2 0,4 16 2,5 0,45 18 1,5 3 0,5 20 3,5 0,6 22 4 0,7 24 5 0,8 27 6 30 2 7 33 8 36 10 1,25 39 12 1