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1、 Reference number ISO 9157:2002(E) ISO 2002 INTERNATIONAL STANDARD ISO 9157 Second edition 2002-09-01 Aerospace Nuts, spline-drive, self- locking, with MJ threads, classifications: 1 100 MPa (at ambient temperature)/425 C, 1 100 MPa (at ambient temperature)/650 C, 1 210 MPa (at ambient temperature)/
2、425 C, 1 210 MPa (at ambient temperature)/730 C, 1 550 MPa (at ambient temperature)/235 C, 1 550 MPa (at ambient temperature)/425 C and 1 550 MPa (at ambient temperature)/ 600 C Dimensions Aronautique et espace crous cannels freinage interne, filetage MJ, classifications: 1 100 MPa ( temprature ambi
3、ante)/425 C, 1 100 MPa ( temprature ambiante)/650 C, 1 210 MPa ( temprature ambiante)/425 C, 1 210 MPa ( temprature ambiante)/730 C, 1 550 MPa ( temprature ambiante)/235 C, 1 550 MPa ( temprature ambiante)/425 C et 1 550 MPa ( temprature ambiante)/600 C Dimensions Copyright International Organizatio
4、n for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 20:59:41 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 9157:2002(E) PDF disclaimer This PDF file may contain embedded typefaces. In a
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6、s licensing policy. The ISO Central Secretariat accepts no liability 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 p
7、rinting. Every care has been taken to ensure that the file is 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. ISO 2002 All rights reserved. Unless otherwise specified, no part of th
8、is 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 ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-12
9、11 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.ch Web www.iso.ch Printed in Switzerland ii ISO 2002 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not fo
10、r Resale, 04/24/2007 20:59:41 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 9157:2002(E) ISO 2002 All rights reserved iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The
11、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-gover
12、nmental, 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 in the ISO/IEC Directives, Part 3. Th
13、e 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 % of the member bodies casting a vote
14、. Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 9157 was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles,
15、Subcommittee SC 4, Aerospace fastener systems. This second edition cancels and replaces the first edition (ISO 9157:1988), which has been technically revised. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/997254500
16、1 Not for Resale, 04/24/2007 20:59:41 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 9157:2002(E) iv ISO 2002 All rights reserved Introduction The dimensions specified in this International Standard have been determined to allow production of a part which will satisfy
17、the requirements of the procurement specification ISO 5858 or ISO 8641, depending on the classification of the nut. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 20:59:41 MDTNo
18、 reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO 9157:2002(E) ISO 2002 All rights reserved 1 Aerospace Nuts, spline-drive, self-locking, with MJ threads, classifications: 1 100 MPa (at ambient temperature)/425 C, 1 100 MPa (at ambient temperature)/650 C
19、, 1 210 MPa (at ambient temperature)/425 C, 1 210 MPa (at ambient temperature)/730 C, 1 550 MPa (at ambient temperature)/235 C, 1 550 MPa (at ambient temperature)/425 C and 1 550 MPa (at ambient temperature)/600 C Dimensions 1 Scope This International Standard specifies the dimensions of spline-driv
20、e nuts, with MJ threads and a self-locking feature achieved by forming the upper portion out-of-round, for classifications: 1 100 MPa1)/425 C2), 1 100 MPa1)/650 C2), 1 210 MPa1)/425 C2), 1 210 MPa1)/730 C2), 1 550 MPa1)/235 C2), 1 550 MPa1)/ 425 C2) and 1 550 MPa1)/600 C2). This International Standa
21、rd is only applicable for the compilation of aerospace product standards. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisi
22、ons of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normati
23、ve document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 5855-2:1999, Aerospace MJ threads Part 2: Limit dimensions for bolts and nuts ISO 7403:1998, Aerospace Spline drives Wrenching configuration Metric series ISO 8788:2000, Aerospa
24、ce Nuts, metric Tolerances of form and position 1) Corresponds to the minimum tensile stress which the nut is able to withstand at ambient temperature without breaking or cracking when tested with a bolt of a higher strength class. 2) Maximum temperature that the nut is able to withstand, without pe
25、rmanent alteration to its original characteristics, after ambient temperature has been restored. The maximum temperature is conditioned by the sealing ring material or by the surface treatment. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=N
26、ASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 20:59:41 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 9157:2002(E) 2 ISO 2002 All rights reserved 3 Configuration and dimensions See Figure 1 and Table 1. Dimensions and tolerances are expressed in milli
27、metres. They apply after any surface coating(s) but before the application of any lubricant. Tolerances of form and position shall conform to those specified in ISO 8788. Details of form not stated are at the manufacturers discretion. a These values, in micrometres, apply before any surface coating(
28、s) is(are) applied. The values do not apply to threads the surface texture of which will be as achieved by the usual manufacturing methods. b Thread c Form out-of-round in this area to achieve the self-locking requirement. Tooling marks permissible in this area. d All forms of entry (radius or chamf
29、er) permissible within the limiting dimensions Figure 1 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 20:59:41 MDTNo reproduction or networking permitted without license from I
30、HS -,-,- ISO 9157:2002(E) ISO 2002 All rights reserved 3 Table 1 G H K M N Q S Diameter code Thread a max. max. min. min. min. max. min. max. Wrenching dash number b 040 MJ4 0,7-4H6H 7,4 5,6 6,7 1,8 4,8 4,2 4,2 060 050 MJ5 0,8-4H6H 9,1 7 8,3 2 5,8 5,2 4,9 070 060 MJ6 1-4H5H 10,6 8,1 9,8 2,3 7,1 6,3
31、5,5 080 070 MJ7 1-4H5H 12,1 9,1 11,3 2,6 8,1 7,3 6,1 090 080 MJ8 1-4H5H 13,6 10,4 12,8 2,8 9,1 8,3 6,7 100 100 MJ10 1,25-4H5H 16,8 13 15,8 1,2 3,1 11,1 10,3 8,1 120 120 MJ12 1,25-4H5H 19,9 15 18,8 1,4 3,5 13,1 12,3 9,5 140 140 MJ14 1,5-4H5H 23 17,5 21,9 1,7 4 15,2 14,4 10,7 170 160 MJ16 1,5-4H5H 26
32、20 24,9 1,9 4,7 17,2 16,4 12,3 190 180 MJ18 1,5-4H5H 29,1 22,5 28 2,1 5,6 19,2 18,4 13,7 220 200 MJ20 1,5-4H5H 32,3 25 31,2 2,3 6,8 21,2 20,4 15,8 240 220 MJ22 1,5-4H5H 35,4 27,5 34,3 2,5 8,3 23,2 22,4 17,6 270 240 MJ24 2-4H5H 38 30 36,9 2,7 10,1 25,3 24,5 19,4 300 a In accordance with ISO 5855-2. I
33、n the self-locking zone, the tolerances apply before forming out-of-round. b In conformity with ISO 7403 over N min. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 20:59:41 MDTN
34、o reproduction or networking permitted without license from IHS -,-,- ISO 9157:2002(E) 4 ISO 2002 All rights reserved Bibliography 1 ISO 5858:1999, Aerospace Nuts, self-locking, with maximum operating temperature less than or equal to 425 C Procurement specification 2 ISO 8641:1987, Aerospace Self-l
35、ocking nuts with maximum operating temperature greater than 425 C Procurement specification 3 ISO 13715:2000, Technical drawings Edges of undefined shape Vocabulary and indications Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical
36、 Standards 1/9972545001 Not for Resale, 04/24/2007 20:59:41 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2
37、007 20:59:41 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 9157:2002(E) ICS 49.030.30 Price based on 4 pages ISO 2002 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 20:59:41 MDTNo reproduction or networking permitted without license from IHS -,-,-