1、BS ISO 9255:2008 ICS 49.030.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BRITISH STANDARD Aerospace Bolts, normal spline head, normal shank, short or medium length MJ threads, metallic material, coated or uncoated, strength classes less than or equal to 1 100 MPa Dimensi
2、onsThis British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 September 2008 BSI 2008 ISBN 978 0 580 55030 0 Amendments/corrigenda issued since publication Date Comments BS ISO 9255:2008 National foreword This British Standard is the UK implementatio
3、n of ISO 9255:2008. It supersedes BS A 308:1994 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee ACE/12, Aerospace fasteners and fastening systems. A list of organizations represented on this committee can be obtained on request to its secretary. This
4、publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations.BS ISO 9255:2008Reference number ISO 9255:2008(E) ISO 2008INTERNATIONAL STANDARD ISO
5、 9255 Second edition 2008-08-15 Aerospace Bolts, normal spline head, normal shank, short or medium length MJ threads, metallic material, coated or uncoated, strength classes less than or equal to 1 100 MPa Dimensions Aronautique et espace Vis tte cannele normale, avec tige normale et filetages MJ co
6、urts ou de longueur moyenne, en matriau mtallique, revtues ou non revtues, des classes de rsistance infrieures ou gales 1 100 MPa Dimensions BS ISO 9255:2008 ISO 9255:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be pri
7、nted 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 Adobes licensing policy. The ISO Central Secretariat accepts no l
8、iability 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 i
9、s suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2008 All rights reserved. Unless otherwise specified, no part of this publication may be reproduce
10、d 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 ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 0
11、1 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2008 All rights reservedBS ISO 9255:2008 ISO 9255:2008(E) ISO 2008 All rights reserved iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standa
12、rds 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 organ
13、izations, governmental and 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 i
14、n the ISO/IEC 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 %
15、 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 9255 was prepared by Technical Committee ISO/TC 20, Aircraf
16、t and space vehicles, Subcommittee SC 4, Aerospace fastener systems. This second edition cancels and replaces the first edition (ISO 9255:1993), which has been technically revised. BS ISO 9255:2008BS ISO 9255:2008 INTERNATIONAL STANDARD ISO 9255:2008(E) ISO 2008 All rights reserved 1 Aerospace Bolts
17、, normal spline head, normal shank, short or medium length MJ threads, metallic material, coated or uncoated, strength classes less than or equal to 1 100 MPa Dimensions 1 Scope This International Standard specifies the dimensions of normal spline head bolts, with close or large tolerance normal sha
18、nk and short or medium length MJ threads, in metallic material, coated or uncoated, with strength classes less than or equal to 1 100 MPa. This International Standard is applicable to the compilation of aerospace product standards. 2 Normative references The following referenced documents are indisp
19、ensable 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 286-2, ISO system of limits and fits Part 2: Tables of standard tolerance grades and limit
20、 deviations for holes and shafts ISO 3353-1, Aerospace Lead and runout threads Part 1: Rolled external threads ISO 5855-2, Aerospace MJ threads Part 2: Limit dimensions for bolts and nuts ISO 7403, Aerospace Spline drives Wrenching configuration Metric series ISO 7913, Aerospace Bolts and screws, me
21、tric Tolerances of form and position 3 Configuration and dimensions See Figure 1 and Table 1. Dimensions and tolerances are expressed in millimetres. They are applicable after any coating (tolerance on shank diameter before coating is also specified for heat cured matrix coatings), but before the ap
22、plication of any lubricant. Details of form not stated are left to the manufacturers discretion. Tolerances of form and position shall be as specified in ISO 7913 if not otherwise stated on product standard. BS ISO 9255:2008 ISO 9255:2008(E) 2 ISO 2008 All rights reservedDimensions in millimetres Br
23、eak sharp edges 0,1 to 0,4 Key 1 thread aRounded or chamfered in this area. bShape optional. cIn accordance with ISO 3353-1. Figure 1 BS ISO 9255:2008 ISO 9255:2008(E) ISO 2008 All rights reserved 3 Blank page BS ISO 9255:2008 ISO 9255:2008(E) 4 ISO 2008 All rights reservedTable 1 D 1Coated bolts Un
24、coated bolts Tol. Tol. D 2D 3D 4D 5D 6D 7 Four holes, equi- distant, optional D 8 One hole, optional Diameter code Threadanom. before coating b close large close large , 05 0 + nom. Tol. min. min. max. H13 cH13 c040 MJ4 0,7-4h6h 4 3 , 0 05 6 7,5 8,3 1,1 050 MJ5 0,8-4h6h 5 3,2 3,4 7 8,3 9,1 1 060 MJ6
25、 1-4h6h 6 0,030 0,045 0,010 0,035 4,1 4,2 8 9,8 10,6 1,5 070 MJ7 1-4h6h 7 4,9 5,2 9 11,3 12,1 080 MJ8 1-4h6h 8 5,2 6,2 10 12,8 13,6 1,4 1,9 100 MJ10 1,25-4h6h 10 0,033 0,048 0,013 0,038 6,7 7,9 12 15,7 16,7 120 MJ12 1,25-4h6h 12 0,036 0,051 0,016 0,041 h12 cf7 ch12 c8 9,8 0,5 14 18,8 19,9 1,6 2,4 BS
26、 ISO 9255:2008 ISO 9255:2008(E) ISO 2008 All rights reserved 5 Table 1 (continued) L 2L 3 H K L 1 0,2 dThread Thread P R S T min. h15 cshort medium short medium nom. Tol. , 04 0 +min. Wrenching dash numbere0,8 5,5 2 to 40 7,5 10 5 6 3,5 0,4 2,5 060 1 6,5 3 to 50 9 12 6 7,5 4,5 0,5 2,5 2,8 070 1,2 7,
27、5 3 to 60 10 14 8,5 5,2 2,8 3,5 080 1,4 8,2 4 to 70 11 15 7 9,5 5,9 3,3 3,8 090 1,6 8,6 4 to 80 11,5 16,5 7,5 10,5 6,3 0,7 3,7 3,9 100 2 10,1 5 to 100 14,5 20,5 9 13 7,7 0,8 , 0 024,7 4,2 120 2,4 11,4 6 to 120 16 22,5 10 14,5 8,8 0,9 , 0 035,6 4,5 140 aIn conformity with ISO 5855-2, except for the m
28、aximum thread major diameter, d max , of bolts with a close tolerance on D 1 , which shall be equal to (D 1,min 0,025). bHeat cured organic matrix coatings for close tolerance normal shanks. cSee ISO 286-2. dIncrements: 1 for L 1u 30; 2 for 30 100. If greater lengths are required, they shall be chos
29、en using these increments. eIn conformity with ISO 7403 over T min. BS ISO 9255:2008 ISO 9255:2008(E) ICS 49.030.20 Price based on 4 pages ISO 2008 All rights reserved BS ISO 9255:2008 This page has been intentionally left blankBS ISO 9255:2008 BSI Group Headquarters 389 Chiswick High Road, London,
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