1、BRITISH STANDARD BS A309:1994 ISO9256:1993 Bolts, large hexagonal head, normal or pitch diameter shank, long length MJ threads, metallic material, coated or uncoated, strength classes less than or equal to1100MPa Dimensions UDC 621.882.21:629.7BSA309:1994 This BritishStandard, having been prepared u
2、nder the directionof the Aerospace Standards Policy Committee, waspublished under the authorityof the Standards Boardand comes into effect on 15August1994 BSI01-2000 The following BSI references relate to the work on this standard: Committee reference ACE/12 Draft for comment 90/79034 DC ISBN 0 580
3、23223 9 Committees responsible for this BritishStandard The preparation of this BritishStandard was entrusted by the Aerospace Standards Policy Committee (ACE/-) to Technical Committee ACE/12, upon which the following bodies were represented: The Association of Electronics, Telecommunications and Bu
4、siness EquipmentIndustries British Industrial Fastners Federation Ministry of Defence Society of British Aerospace Companies Ltd. Amendments issued since publication Amd. No. Date CommentsBSA309:1994 BSI 01-2000 i Contents Page Committees responsible Inside front cover National foreword ii 1 Scope 1
5、 2 Normative references 1 3 Configuration and dimensions 1 Figure 1 Configuration for diameter codes030 and040 2 Figure 2 Configuration for diameter codes050 to080 2 Table 1 3 List of references Inside back coverBSA309:1994 ii BSI 01-2000 National foreword This BritishStandard has been prepared unde
6、r the direction of the Aerospace Standards Policy Committee. It is identical with ISO9256:1993 Aerospace Bolts, large hexagonal head, normal or pitch diameter shank, long length MJ threads, metallic material, coated or uncoated, strength classes less than or equalto1100MPa Dimensions published by th
7、e International Organization for Standardization (ISO). 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 from lega
8、l obligations. Cross-references International Standard Corresponding BritishStandard ISO286-2:1988 BS EN20286 ISO system of limits and fits Part2:1992 Tables of standard tolerance grades and limit deviations for holes and shafts (Identical) ISO3353:1992 BS2A231:1992 Rolled threads for bolts. Lead an
9、d runout requirements (Identical) ISO5855-2:1988 BS6293 Aerospace MJ threads Part2:1994 Limit dimensions for bolts and nuts (Identical) Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 to4, an inside back cover and a back cover. This standard has be
10、en updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BSA309:1994 BSI 01-2000 1 1 Scope This International Standard specifies the dimensions of large hexagonal head bolts, with normal or pitch diameter shank,
11、 and long length MJthreads, in metallic material, coated or uncoated, with strength classes less than or equal to1100MPa. It is intended for the drawing up of aerospace product standards. 2 Normative references The following standards contain provisions which, through reference in this text, constit
12、ute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of th
13、e standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO286-2:1988, ISO system of limits and fits Part2: Tables of standard tolerance grades and limit deviations for holes and shafts. ISO3353:1992, Aerospace Rolled threads for bolts Lead
14、and runout requirements. ISO5855-2:1988, Aerospace MJ threads Part2: Limit dimensions for bolts and nuts. 3 Configuration and dimensions See Figure 1 and Figure 2 and Table 1. Dimensions and tolerances are expressed in millimetres. They are applicable after any surface coating, but before the applic
15、ation of any lubricant. Details of form not stated are left to the manufacturers discretion. BSA309:1994 2 BSI 01-2000 Figure 1 Configuration for diameter codes030 and040 NOTEFor other dimensions, see Figure 1. Figure 2 Configuration for diameter codes050 to080BSA309:1994 BSI 01-2000 3 Table 1 Diame
16、ter code Thread a D 1 D 2 b D 3 D 4 D 5 D 6 normal pitchdiameter nom. tol. nom. tol. min. nom. tol. min. H13 c 030 MJ30,54h6h 3 h12 c 2,68 0,13 6,4 2,3 6,5 1 040 MJ40,74h6h 4 3,54 7,4 3 0,5 7,5 050 MJ50,84h6h 5 4,48 8,3 3,4 8,4 5,25 060 MJ614h6h 6 5,35 10,2 4,2 10,3 6,25 1,4 070 MJ714h6h 7 6,35 11,2
17、 5,2 11,3 7,25 080 MJ814h6h 8 7,35 13,2 6,2 13,3 8,25 Diameter code E F G H J K L 1 def L 2 def L 3 L 4 e R S min. min. max. nom. tol. nom. tol. 030 7,6 1,55 3,4 0,5 0,4 2 12 14 to42 0,3 0,4 7 h12 c 040 8,7 1,8 3,9 14 16 to56 8 050 9,8 1,35 2 3 3,7 0,5 4 16 20 to70 0,5 9 h13 c 060 12 1,6 2,3 3,5 4,5
18、 0,7 18 22 to84 0,7 11 070 13,2 1,85 2,7 4 4,95 20 24 to98 12 080 15,5 2,1 3 4,5 5,8 0,6 22 26 to112 14 a In conformity with ISO5855-2. b D 2max.u actual S. c See ISO286-2. d First length, corresponding to first L 4length. e Increments: 2 for L 4 u 100 4 for L 100 If greater lengths are necessary, t
19、hey shall be chosen using these increments. f Conditions L 1 min. and L 2 max. cannot be obtained simultaneously. 0 0,5 0 0,5 0 0,3 0 0,3 0 0,3 0 0,24 blankBSA309:1994 BSI 01-2000 List of references See national foreword.BS A309:1994 ISO9256:1993 BSI 389 Chiswick High Road London W4 4AL BSIBritishSt
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