BS ISO 5856-2008 Aerospace - Screws 100 degrees normal countersunk head internal offset cruciform ribbed or unribbed drive normal shank short or medium length MJ threads metallic m .pdf

1、BS ISO 5856:2008ICS 49.030.20NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDAerospace Screws,100 degrees normalcountersunk head,internal offsetcruciform ribbed or unribbed drive,normal shank, shortor medium lengthMJ threads, metallicmaterial, coated oruncoated,

2、 strengthclasses less than orequal to 1 100 MPa Dimen ionssThis British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 31 October2008 BSI 2008ISBN 978 0 580 55025 6Amendments/corrigenda issued since publicationDate CommentsBS ISO 5856:2008National forewordTh

3、is British Standard is the UK implementation of ISO 5856:2008.The UK participation in its preparation was entrusted to TechnicalCommittee ACE/12, Aerospace fasteners and fastening systems.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publicatio

4、n does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.BS ISO 5856:2008Reference numberISO 5856:2008(E)ISO 2008INTERNATIONAL STANDARD ISO5856Second edit

5、ion2008-08-15Aerospace Screws, 100 degrees normal countersunk head, internal offset cruciform ribbed or unribbed drive, 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 fr

6、aise 100 degrs normale, empreinte cruciforme dporte, avec ou sans saillies antidrapantes, avec tige normale et filetages MJ courts ou de longueur moyenne, en matriau mtallique, revtues ou non revtues, de classes de rsistance infrieures ou gales 1 100 MPa Dimensions BS ISO 5856:2008ISO 5856:2008(E) P

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10、HT PROTECTED DOCUMENT ISO 2008 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

11、 ISOs 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 copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2008 All rights reservedBS ISO 5856:2008ISO 5856:2008(E) ISO 2008 All rights

12、reserved iiiForeword 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 f

13、or 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 (IEC) on

14、 all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in 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 a

15、re 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

16、responsible for identifying any or all such patent rights. ISO 5856 was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles, Subcommittee SC 4, Aerospace fastener systems. This second edition cancels and replaces the first edition (ISO 5856:1991), which has been technically revise

17、d. BS ISO 5856:2008BS ISO 5856:2008INTERNATIONAL STANDARD ISO 5856:2008(E) ISO 2008 All rights reserved 1Aerospace Screws, 100 degrees normal countersunk head, internal offset cruciform ribbed or unribbed drive, normal shank, short or medium length MJ threads, metallic material, coated or uncoated,

18、strength classes less than or equal to 1 100 MPa Dimensions 1 Scope This International Standard specifies the dimensions of 100 normal countersunk head screws with internal offset cruciform ribbed or unribbed drive, with close or large tolerance normal shank and short or medium length MJ threads, in

19、 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 indispensable for the application of this document

20、. 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 deviations for holes and shafts ISO 3353-1,

21、 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 7913, Aerospace Bolts and screws, metric Tolerances of form and position ISO 14275, Aerospace Drives, internal, offset cruciform, ribbed Metric series I

22、SO 14276, Aerospace Drives, internal, offset cruciform Metric series 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 mat

23、rix coatings), but before the application 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 5856:2008ISO 5856:2008(E) 2 ISO 2008 All rights reser

24、vedDimensions in millimetres Break sharp edges 0,1 to 0,4 Key 1 thread aBlended convex form permitted. bIn accordance with ISO 3353-1. Figure 1 BS ISO 5856:2008ISO 5856:2008(E) ISO 2008 All rights reserved 3Blank page BS ISO 5856:2008ISO 5856:2008(E) 4 ISO 2008 All rights reservedTable 1 D1Coated sc

25、rews Uncoated screws Tol. Tol. D2D3D4D5D6 One hole, optionalDiameter code Thread anom.before coatingbclose large close large max. min. nom. Tol. H13 c030 MJ3 0,5-4h6h 3 0,026 0,041 0,006 0,031 6 5,4 4,5 2,3 040 MJ4 0,7-4h6h 4 8 7,2 5,78 3 ,0051,1 050 MJ5 0,8-4h6h 5 10 9 7,71 3,4 060 MJ6 1-4h6h 6 0,0

26、30 0,045 0,010 0,035 12 10,8 9 4,2 1,5 070 MJ7 1-4h6h 7 14 12,8 10,28 5,2 080 MJ8 1-4h6h 8 16 14,8 12,21 6,2 1,9 100 MJ10 1,25-4h6h 10 0,033 0,048 0,013 0,038 20 18,8 15,43 7,9 120 MJ12 1,25-4h6h 12 24 22,8 18 9,8 2,4 140 MJ14 1,5-4h6h 14 28 26,8 20,57 11,5 160 MJ16 1,5-4h6h 16 32 30,8 24,43 13,5 3

27、180 MJ18 1,5-4h6h 18 0,036 0,051 0,016 0,041 36 34,8 25,71 15,5 200 MJ20 1,5-4h6h 20 0,040 0,055 0,020 0,045 h12 cf7ch12 c40 38,8 28,92 17,5 0,5 3,8 BS ISO 5856:2008ISO 5856:2008(E) ISO 2008 All rights reserved 5Table 1 (continued) L2L3E F G H L1 0,2 dThread Thread R min. ,0008short medium short med

28、ium nom. Tol. Drive codee0,06 0,63 0,3 1,27 3 to 30 6 7,5 R3 0,08 0,93 0,4 1,69 3 to 40 7,5 10 5 6 0,4 R4 0,96 0,5 2,12 4 to 50 9 12 6 7,5 0,5 R5 1,26 2,54 5 to 60 10 14 8,5 1,57 2,96 6 to 70 11 15 7 9,5 R6 1,6 3,39 6 to 80 11,5 16,5 7,5 10,5 0,7 R8 1,93 4,23 8 to 100 14,5 20,5 9 13 0,8 ,002R10 2,53

29、 5,08 10 to 120 16 22,5 10 14,5 0,9 R12 3,14 5,93 10 to 140 19 26 12 17 R14 3,2 6,77 10 to 160 20,5 28,5 12,5 18,5 1,1 R16 4,35 7,62 11 to 180 22,5 31 14,5 21 0,1 4,68 0,6 8,47 12 to 200 24,5 33,5 15 22,5 1,3 ,003R18 aIn conformity with ISO 5855-2, except for the maximum thread major diameter, dmax,

30、 of bolts with a close tolerance on D1, which shall be equal to (D1,min 0,025). bHeat cured organic matrix coatings for close tolerance normal shanks. cSee ISO 286-2. dIncrements: 1 for L1u 30; 2 for 30 100. If greater lengths are required, they shall be chosen using these increments. eIn accordance

31、 with ISO 14275 or ISO 14276. BS ISO 5856:2008ISO 5856:2008(E) ICS 49.030.20 Price based on 4 pages ISO 2008 All rights reserved BS ISO 5856:2008This page has been intentionally left blank BS ISO5856:2008BSI GroupHeadquarters 389Chiswick High Road,London, W4 4AL, UKTel +44 (0)20 8996 9001Fax +44 (0)

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