1、BRITISH STANDARD AEROSPACE SERIES BSA 316:1997 ISO 4147:1997 Aerospace Nuts, hexagonal, slotted (castellated), normal height, normal across flats, with MJ threads, classifications: 600MPa(at ambient temperature)/120 C, 600MPa (at ambient temperature)/235 C, 900MPa (at ambient temperature)/425 C, 110
2、0 MPa (at ambient temperature)/235 C, 1100MPa (at ambient temperature)/315 C, 1100MPa (at ambient temperature)/650 C, 1210MPa (at ambient temperature)/730 C, 1250MPa (at ambient temperature)/235 C and1550MPa (at ambient temperature)/600C Dimensions ICS 49.030.30BSA316:1997 This British Standard, hav
3、ing been prepared under the directionof the Engineering SectorBoard, was published underthe authority of the Standards Board and comes intoeffect on 15 November1997 BSI 04-2000 ISBN 0 580 28789 0 National foreword This British Standard reproduces verbatim ISO4147:1997 and implements it as the UK nat
4、ional 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 has the responsibility to: aid enquirers to understand the text;
5、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 in the UK. A list of organizations represented on this subcommitte
6、e 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 entitled “International Standards Correspondence Index”, or by using
7、 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. Compliance with a British Standard does not of itself confer immunity f
8、rom legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, theISO title page, pages ii to iv, pages1 to3 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated i
9、n the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date CommentsBSA316:1997 BSI 04-2000 i Contents Page National foreword Inside front cover Foreword iii Text of ISO 4147 1ii blankBSA316:1997 ii BSI 04-2000 Contents Page Foreword iii Introduction 1 1 Scope
10、1 2 Normative references 1 3 Configuration and dimensions 1 Figure 1 2 Table 1 3 Descriptors: Aircraft industry, fasteners, MJ threads, nuts (fasteners), hexagonal nuts, castle nuts, classification, form specifications, dimensions.BSA316:1997 BSI 04-2000 iii Foreword ISO (the International Organizat
11、ion 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 for which a technical committee has been established h
12、as 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 all matters of electrotechnical standardization. Dra
13、ft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least75%of the member bodies casting a vote. International Standard ISO4147 was prepared by Technical Committee ISO/TC20, Ai
14、rcraft and space vehicles, Subcommittee SC4, Aerospace fastener systems. This third edition cancels and replaces the second edition (ISO4147:1983), of which it constitutes a technical revision.iv blankBSA316:1997 BSI 04-2000 1 Introduction The dimensions specified in this International Standard have
15、 been determined to satisfy the requirements of the procurement specification of ISO9139. 1 Scope This International Standard specifies the dimensions of hexagon slotted (castellated) nuts, normal height, normal across flats, with MJ threads, of classifications:600MPa 1) /120 C 2) ,600MPa 1) /235 C
16、2) , 900 MPa 1) /425 C 2) , 1100MPa 1) /235 C 2) ,1100MPa 1) /315 C 2) ,1100MPa 1) /650 C 2) , 1 210 MPa 1) /730 C 2) , 1250 MPa 1) /235 C 2)and1550MPa 1) /600 C 2) . These nuts are intended to be used with split pins in conformity with ISO1234. This International Standard is only applicable for the
17、 compilation of aerospace product standards. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revi
18、sion, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO1234:, Split pins 3) . IS
19、O5855-2:1988, Aerospace MJ threads Part2: Limit dimensions for bolts and nuts. ISO8788:1987, Aerospace Fasteners Tolerances of form and position for nuts. ISO9139:, Aerospace Nuts, plain or slotted (castellated) Procurement specification 4) . 3 Configuration and dimensions See Figure 1 and Table 1.
20、Dimensions and tolerances are expressed in millimetres. They apply after any surface coating(s) but before the application of any lubricant. 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
21、a higher strength class. 2) Maximum temperature that the nut is able to withstand, without permanent alteration to its original characteristics, after ambient temperature has been restored. The maximum temperature is conditioned by the material or by the surface treatment. 3) To be published. (Revis
22、ion of ISO1234:1976) 4) To be published.BSA316:1997 2 BSI 04-2000 NOTETolerances of form and position shall conform to those specified in ISO8788. Details of form not stated are at the manufacturers discretion. 1) These values, in micrometres, apply before any surface coating(s) is (are) applied. Th
23、e values do not apply to threads the surface texture of which will be as achieved by the usual manufacturing methods. 2) Tooling marks permissible within counterbore. 3) Applies to: height below slots; height of flats (diameter codes060 to240); bottom of counterbore. 4) This dimension also applies t
24、o the upper chamfer. All forms of entry (chamfer or radius) permissible within these limiting dimensions. 5) Diameter M may be tangential to, but shall not intrude on the flats. Figure 1 BSA316:1997 BSI 04-2000 3 Table 1 Diameter code Thread a E F G H J K L M N S Maximum split pin diameter b min. 0,
25、25 0,25 0,25 H15 min. H14 040 MJ40,74H6H 7,6 7 h12 3 5 4 4,2 6,4 0,5 1,3 1 050 MJ50,84H6H 8,7 8 3,75 6,2 5 5,2 7,4 1,7 1,4 060 MJ614H5H 10,9 10 4,5 6,9 9 6 6,3 9,3 070 MJ714H5H 12 11 5,25 8,1 10 7 7,3 10,2 2,1 1,8 080 MJ814H5H 14,3 13 6 8,8 11 8,3 12,2 100 MJ101,254H5H 18,9 17 7,5 11,1 13 10,3 16 0,
26、6 2,6 2,3 120 MJ121,254H5H 21,1 19 9 12,6 16 12,3 18 140 MJ141,5 4H5H 24,5 22 h13 10,5 14,9 18 14,4 21 3,2 2,9 160 MJ161,54H5H 26,8 24 12 16,4 22 16,4 23 180 MJ181,54H5H 30,2 27 13,5 18,7 25 18,4 26 4 3,7 200 MJ201,54H5H 33,6 30 15 20,2 28 20,4 29 220 MJ221,54H5H 35,8 32 16,5 21,7 30 22,4 30,9 240 M
27、J2424H5H 40,4 36 18 23,7 32 24,5 34,9 a In accordance with ISO5855-2 b For information, in conformity with ISO1234 for the split pin maximum diameter but not for the split pin maximum diameter/thread diameter combination 0 0,3 +0,6 0 +0,8 0BSA 316:1997 ISO 4147:1997 BSI 389 Chiswick High Road London
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