1、 ISO 2016 Aerospace Screws, pan head, internal offset cruciform ribbed or unribbed drive, stepped 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 cylindrique, empreinte crucifor
2、me dporte, avec ou sans saillies antidrapantes, ft dgag et filetage MJ court ou de longueur moyenne, en matriau mtallique, revtues ou non revtues, des classes de rsistance infrieures ou gales 1 100 MPa Dimensions INTERNATIONAL STANDARD ISO 12260 Second edition 2016-02-15 Reference number ISO 12260:2
3、016(E) ISO 12260:2016(E)ii ISO 2016 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2016, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, includin
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5、 +41 22 749 01 11 Fax +41 22 749 09 47 copyrightiso.org www.iso.org ISO 12260:2016(E)Foreword iv 1 Scope . 1 2 Normative references 1 3 C onfigur ation and dimensions . 1 ISO 2016 All rights reserved iii Contents Page ISO 12260:2016(E) Foreword ISO (the International Organization for Standardization
6、) 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 repr
7、esented 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 all matters of electrotechnical standardization. The procedures used to dev
8、elop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the IS
9、O/IEC Directives, Part 2 (see www.iso.org/directives). 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. Details of any patent rights identified during
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11、ing of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information The committee responsible for this document is ISO/TC 20,
12、 Aircraft and space vehicles, Subcommittee SC 4, Aerospace fastener systems. This second edition cancels and replaces the first edition (ISO 12260:1996), of which it constitutes a minor revision.iv ISO 2016 All rights reserved INTERNATIONAL ST ANDARD ISO 12260:2016(E) Aerospace Screws, pan head, int
13、ernal offset cruciform ribbed or unribbed drive, stepped 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 pan head screws with internal offset c
14、ruciform ribbed or unribbed drive, stepped shank, 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 Th
15、e following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. 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
16、, Geometrical product specifications (GPS) ISO code system for tolerances on linear sizes Part 2: Tables of standard tolerance classes and limit deviations for holes and shafts ISO 3353 (all parts), Aerospace Lead and runout threads ISO 5855-2, Aerospace MJ threads Part 2: Limit dimensions for bolts
17、 and nuts ISO 7913:1994, Aerospace Bolts and screws, metric Tolerances of form and position ISO 14275, Aerospace Drives, internal, offset cruciform, ribbed Metric series ISO 14276, Aerospace Drives, internal, offset cruciform Metric series 3 C onfigur ation and dimensions See Figure 1 and Table 1. D
18、imensions and tolerances are expressed in millimetres. They are applicable after any surface coating, but before the application of any lubricant. Tolerances of form and position are specified in ISO 7913. ISO 2016 All rights reserved 1 ISO 12260:2016(E) Break sharp edges 0,1 to 0,4 Key 1 thread a S
19、hape optional. b In accordance with ISO 3353 (all parts). Figure 1 Table 1 Diam- eter code Thread a D 1 D 2 D 3 D 4 D 5 E K L 1 c L 2Thread R T Drive code d h12 b min. - ,nom. tol. h12 b + ,nom. tol. 0,2 short medium nom. tol. max. min. 040 MJ40,7 4h6h 3,0 6,7 8 3,0 - ,4 0,4 2,4 - ,2 to 40 7, 5 10,0
20、 0,4 - ,1,6 0,4 R4 050 MJ50,8 4h6h 3,9 8,7 10 3,4 0,5 5 0,5 3,0 3 to 50 9,0 12,0 0,5 2,0 0,5 R5 060 MJ61 4h6h 4,6 10,7 12 4,2 6 0,7 3,6 - ,3 to 60 10,0 14,0 0,7 2,4 0,6 R6 070 MJ71 4h6h 5,6 12,7 14 5,2 7 4,2 4 to 70 11,0 15,0 2,8 0,7 080 MJ81 4h6h 6,6 14,7 16 6,2 8 4,8 4 to 80 11,5 16,5 3,2 0,8 R8 1
21、00 MJ101,25 4h6h 8,3 18,7 20 7,9 10 0,8 6 5 to 100 14,5 20,5 0,8 4,0 1,0 R10 120 MJ121,25 4h6h 10,3 22,7 24 9,8 12 0,9 7, 2 6 to 120 16,0 22,5 0,9 - ,4,8 1,2 R12 aIn accordance with ISO 5855-2. bSee ISO 286-2. cIncrements:1 for L 1 302 for 30 100 dIn accordance with ISO 14275 or ISO 14276.2 ISO 2016 All rights reserved ISO 12260:2016(E) ISO 2016 All rights reserved IC S 49.030.20 Price based on 2 pages
