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1、BRITISH STANDARD BS A 309:1994 ISO 9256:1993 Bolts, large hexagonal head, normal or pitch diameter shank, long length MJ threads, metallic material, coated or uncoated, strength classes less than or equal to 1100 MPa Dimensions UDC 621.882.21:629.7 Licensed Copy: London South Bank University, London
2、 South Bank University, Sat Dec 09 03:33:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS A 309:1994 This British Standard, having been prepared under the direction of the Aerospace Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 15 Augus
3、t 1994 BSI 01-2000 The following BSI references relate to the work on this standard: Committee reference ACE/12 Draft for comment 90/79034 DC ISBN 0 580 23223 9 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Aerospace Standards Policy C
4、ommittee (ACE/-) to Technical Committee ACE/12, upon which the following bodies were represented: The Association of Electronics, Telecommunications and Business Equipment Industries British Industrial Fastners Federation Ministry of Defence Society of British Aerospace Companies Ltd. Amendments iss
5、ued since publication Amd. No.DateComments Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 03:33:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS A 309:1994 BSI 01-2000i Contents Page Committees responsibleInside front cover National forewordii 1Scope1 2Normativ
6、e references1 3Configuration and dimensions1 Figure 1 Configuration for diameter codes 030 and 0402 Figure 2 Configuration for diameter codes 050 to 0802 Table 13 List of referencesInside back cover Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 03:33:01 GMT+00
7、:00 2006, Uncontrolled Copy, (c) BSI BS A 309:1994 ii BSI 01-2000 National foreword This British Standard has been prepared under the direction of the Aerospace Standards Policy Committee. It is identical with ISO 9256:1993 Aerospace Bolts, large hexagonal head, normal or pitch diameter shank, long
8、length MJ threads, metallic material, coated or uncoated, strength classes less than or equal to 1 100 MPa Dimensions published by the International Organization for Standardization (ISO). A British Standard does not purport to include all the necessary provisions of a contract. Users of British Sta
9、ndards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross-references International StandardCorresponding British Standard ISO 286-2:1988BS EN 20286 ISO system of limits and fits Part 2:1992 Tables of stan
10、dard tolerance grades and limit deviations for holes and shafts (Identical) ISO 3353:1992BS 2A 231:1992 Rolled threads for bolts. Lead and runout requirements (Identical) ISO 5855-2:1988BS 6293 Aerospace MJ threads Part 2:1994 Limit dimensions for bolts and nuts (Identical) Summary of pages This doc
11、ument comprises a front cover, an inside front cover, pages i and ii, pages 1 to 4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed C
12、opy: London South Bank University, London South Bank University, Sat Dec 09 03:33:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS A 309:1994 BSI 01-20001 1 Scope This International Standard specifies the dimensions of large hexagonal head bolts, with normal or pitch diameter shank, and long length
13、MJ threads, in metallic material, coated or uncoated, with strength classes less than or equal to 1 100 MPa. 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, constitute provision
14、s 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 the standards i
15、ndicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 286-2:1988, ISO system of limits and fits Part 2: Tables of standard tolerance grades and limit deviations for holes and shafts. ISO 3353:1992, Aerospace Rolled threads for bolts Lead and runout
16、 requirements. ISO 5855-2:1988, Aerospace MJ threads Part 2: 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 application of
17、 any lubricant. Details of form not stated are left to the manufacturers discretion. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 03:33:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS A 309:1994 2 BSI 01-2000 Figure 1 Configuration for diameter codes 030 and
18、 040 NOTEFor other dimensions, see Figure 1. Figure 2 Configuration for diameter codes 050 to 080 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 03:33:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS A 309:1994 BSI 01-20003 Table 1 Diameter code Threada D1 D2bD
19、3D4D5D6 normalpitch diameter nom.tol.nom.tol.min.nom.tol.min.H13c 030MJ30,5 4h6h3 h12c 2,68 0,13 6,42,36,5 1 040MJ40,7 4h6h43,547,43 0,5 7,5 050MJ50,8 4h6h54,488,33,48,45,25 060MJ61 4h6h65,3510,24,210,36,25 1,4070MJ71 4h6h76,3511,25,211,37,25 080MJ81 4h6h87,3513,26,213,38,25 Diameter code EFGHJKL1de
20、fL2defL3L4eRS min.min.max.nom.tol.nom.tol. 0307,61,55 3,4 0,5 0,42 1214 to 42 0,3 0,4 7 h12c 0408,71,83,91416 to 568 0509,81,35 233,70,5 4 1620 to 700,59 h13c 060121,62,33,54,5 0,7 1822 to 84 0,7 11 07013,21,85 2,744,952024 to 9812 08015,52,134,55,80,62226 to 11214 a In conformity with ISO 5855-2. b
21、 D 2 max. u actual S. c See ISO 286-2. d First length, corresponding to first L 4 length. e Increments: 2 for L4u 100 4 for L 100 If greater lengths are necessary, they shall be chosen using these increments. f Conditions L 1min. and L2max. cannot be obtained simultaneously. 0 0,5 0 0,5 0 0,3 0 0,3
22、0 0,3 0 0,2 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 03:33:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 blank Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 03:33:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS A
23、 309:1994 BSI 01-2000 List of references See national foreword. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 03:33:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS A 309:1994 ISO 9256:1993 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institu
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