BS-A-319-1997 ISO-12268-1997.pdf
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1、BRITISH STANDARD AEROSPACE SERIES BS A 319:1997 ISO 12268: 1997 Aerospace Nuts, hexagonal, plain, reduced height, reduced across flats, with MJ threads, classifications: 450 MPa (at ambient temperature)/425 C, 600 MPa (at ambient temperature)/235 C, 600 MPa (at ambient temperature)/315 C, 600 MPa (a
2、t ambient temperature)/650 C, 900 MPa (at ambient temperature)/235 C, 900 MPa (at ambient temperature)/730 C, and 1 100 MPa (at ambient temperature)/600 C, Dimensions ICS 49.030.30 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 03:33:10 GMT+00:00 2006, Uncontro
3、lled Copy, (c) BSI BS A 319:1997 This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 October 1997 BSI 09-1999 ISBN 0 580 28730 0 National foreword This British Standard r
4、eproduces verbatim ISO 12268:1997 and implements it as the UK national standard. The UK participation in its preparation was entrusted by Technical Committee ACE/12, Aerospace fasteners and fastening systems, to Subcommittee ACE/12/1, Aerospace fasteners and fastening systems (international), which
5、has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them i
6、n the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section ent
7、itled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compli
8、ance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the ISO title page, pages ii to iv, pages 1 and 2 and a back cover. This standard has been updated (see copyright dat
9、e) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No.DateComments Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 03:33:10 GMT+00:00 2006, Uncontrolled C
10、opy, (c) BSI BS A 319:1997 BSI 09-1999i Contents Page National forewordInside front cover Forewordiii Text of ISO 122681 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 03:33:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: London South Bank
11、 University, London South Bank University, Sat Dec 09 03:33:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 03:33:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS A 319:1997 ii BSI 09-1999 Contents Page Forewordiii I
12、ntroduction1 1Scope1 2Normative references1 3Configuration and dimensions1 Figure 12 Table 12 Descriptors: Aircraft industry, fasteners, MJ threads, nuts (fasteners), hexagonal nuts, classification, form specifications, dimensions. Licensed Copy: London South Bank University, London South Bank Unive
13、rsity, Sat Dec 09 03:33:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS A 319:1997 BSI 09-1999iii 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 c
14、arried 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-governmental, in liaison with ISO, also take part in the wor
15、k. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires
16、 approval by at least 75 % of the member bodies casting a vote. International Standard ISO 12268 was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles, Subcommittee SC 4, Aerospace fastener systems. Licensed Copy: London South Bank University, London South Bank University, Sat D
17、ec 09 03:33:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv blank Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 03:33:10 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS A 319:1997 BSI 09-19991 Introduction The dimensions specified in this International Standard
18、 have been determined to satisfy the requirements of the procurement specification of ISO 9139. 1 Scope This International Standard specifies the dimensions of plain, hexagonal nuts, reduced height, reduced across flats, with MJ threads, of classifications: 450 MPa1)/425 C2), 600 MPa1)/235 C2), 600
19、MPa1)/315 C2), 600 MPa1)/650 C2), 900 MPa1)/235 C2), 900 MPa1)/730 C2) and 1 100 MPa1)/600 C2). Nuts provided with holes are intended to be used with lockwire in conformity with ISO 245. This International Standard is only applicable for the compilation of aerospace product standards. 2 Normative re
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