1、BRITISH STANDARD BS A307:1994 ISO9254:1993 Bolts, normal spline head, normal or pitch diameter shank, long length MJ threads, metallic material, coated or uncoated, strength classes lessthan or equal to1100MPa Dimensions UDC 621.882.21:629.7BSA307:1994 This BritishStandard, having been prepared unde
2、r 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 comment90/79028DC ISBN 0 580 23221
3、 2 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 Busines
4、s EquipmentIndustries British Industrial Fastners Federation Ministry of Defence Society of British Aerospace Companies Ltd. Amendments issued since publication Amd. No. Date CommentsBSA307:1994 BSI 01-2000 i Contents Page Committees responsible Inside front cover National foreword ii 1 Scope 1 2 No
5、rmative references 1 3 Configuration and dimensions 1 Figure 1 2 Table 1 3 List of references Inside back coverBSA307:1994 ii BSI 01-2000 National foreword This BritishStandard has been prepared under the direction of the Aerospace Standards Policy Committee. It is identical with ISO9254:1993 Aerosp
6、ace Bolts, normal spline head, normal or pitch diameter shank, long length MJ threads, metallic material, coated or uncoated, strength classes less than or equal to1100MPa Dimensions published by the International Organization for Standardization (ISO). A British Standard does not purport to include
7、 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 legal obligations. Cross-references International Standard Corresponding BritishStandard ISO286-2:1988 BS
8、EN20286 ISO system of limits and fits. Part2:1992 Tables of standard tolerance grades and limit deviations for holes and shafts (Identical) ISO3353:1992 BS2A231:1993 Rolled threads for bolts. Lead and runout requirements (Identical) ISO5855-2:1988 BS6293 Aerospace MJ threads Part2:1994 Limit dimensi
9、ons for bolts and nuts (Identical) ISO7403:1983 BS A294:1984 Specification for spline drive wrenching configurations. Metric series (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 standar
10、d 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.BSA307:1994 BSI 01-2000 1 1 Scope This International Standard specifies the dimensions of normal spline head bolts, with normalor pitch diameter s
11、hank, 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, co
12、nstitute 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
13、of the 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
14、Lead and runout requirements. ISO5855-2:1988, Aerospace MJ threads Part2: Limit dimensions for bolts and nuts. ISO7403:1983, Fasteners for aerospace construction Spline drive wrenching configuration Metric series. 3 Configuration and dimensions See Figure 1 and Table 1. Dimensions and tolerances are
15、 expressed in millimetres. They are applicable after any surface coating, but before the application of any lubricant. BSA307:1994 2 BSI 01-2000 Figure 1 BSA307:1994 BSI 01-2000 3 Table 1 Diameter code Thread a D 1 D 2 D 3 D 4 D 5 D 6 D 7 Normal Pitch diameter nom. tol. nom. tol. nom. tol. min. min.
16、 max. H13 b 040 MJ4 0,74h6h 4 3,54 3 6 7,5 8,3 1 050 MJ5 0,84h6h 5 4,48 3,2 3,4 0,5 7 8,3 9,1 060 MJ6 14h6h 6 5,35 4,1 4,2 8 9,8 10,6 1,4 070 MJ7 14h6h 7 h12 b 6,35 0,13 4,9 5,2 9 11,3 12,1 080 MJ8 14h6h 8 7,35 5,2 6,2 10 12,8 13,6 100 MJ10 1,254h6h 10 9,19 6,7 7,9 12 15,7 16,7 1,6 120 MJ12 1,254h6h
17、 12 11,19 8 9,8 14 18,8 19,9 Diameter code H K L 1 cde L 2 cde L 3 L 4 e P R 1 S T Wrenching dash number f min. h15 b min. max. nom. tol. nom. tol. min. 040 0,8 5,5 0,4 2 14 16 to56 3,5 0,4 2,5 060 050 1 6,5 0,5 4 16 20 to70 4,5 0,5 2,5 2,8 070 060 1,2 7,5 0,7 18 22 to84 5,2 0,7 2,8 3,5 080 070 1,4
18、8,2 20 24 to98 0,3 5,9 3,3 3,8 090 080 1,6 8,6 22 26 to112 6,3 3,7 3,9 100 100 2 10,1 0,8 6 26 32 to140 7,7 0,8 4,7 4,2 120 120 2,4 11,4 0,9 30 36 to168 8,8 0,9 5,6 4,5 140 a In conformity with ISO5855-2. b See ISO286-2. c First length, corresponding to first L 4length. d Conditions L 1 min. and L 2
19、 max. cannot be obtained simultaneously. e Increments: 2 for L 4 u 100 4 for L 4 100 If greater lengths are required, they shall be chosen using these increments. f In conformity with ISO7403 over T min. +0,5 0 0 0,5 +0,4 0 0 0,2 0 0,34 blankBSA307:1994 BSI 01-2000 List of references Seenational for
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