1、BRITISH STANDARD AEROSPACE SERIES BS EN3112: 1995 Bolts, normal hexagonal head, threaded to head, in alloy steel, cadium plated Classification:900MPa (at ambient temperature)/235 C The European Standard EN3112:1995 has the status of a British StandardBSEN 3112:1995 This BritishStandard, having been
2、prepared under the directionof the Engineering SectorBoard, was published underthe authority of the Standards Board and comes intoeffect on 15 August1995 BSI 12-1999 The following BSI references relate to the work on this standard: Committee reference ACE/12 Draft for comment88/76361DC ISBN 0 580 23
3、875 X Committees responsible for this British Standard The preparation of this BritishStandard was entrusted to Technical Committee ACE/12, Aerospace fasteners and fastening systems, upon which the following bodies were represented: Association of Electronics, Telecommunications and Business Equipme
4、nt Industries British Industrial Fasteners Federation Ministry of Defence Society of British Aerospace Companies Ltd. Amendments issued since publication Amd. No. Date CommentsBSEN 3112:1995 BSI 12-1999 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 1 Scope
5、 3 2 Normative references 3 3 Required characteristics 3 4 Designation 6 5 Marking 6 6 Technical specification 6 Figure 1 4 Table 1 5 Table 2 6 Table 3 6 List of references Inside back coverBSEN 3112:1995 ii BSI 12-1999 National foreword This BritishStandard has been prepared by Technical Committee
6、ACE/12 and is the English language version of EN3112:1995 Aerospace series Bolts, normal hexagonal head, threaded to head, in alloy steel, cadium plated Classification:900MPa (at ambient temperature)/235 C, published by the European Committee for Standardization (CEN). EN3112:1995 was produced as a
7、result of international discussions in which the United Kingdom took an active part. 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 its
8、elf confer immunity from legal obligations. Cross-references Publication referred to Corresponding BritishStandard EN2000:1991 BS EN2000:1992 Quality assurance EN aerospace products Approval of the quality system of manufacturers EN2424:1995 BS EN2424:1995 Aerospace series Marking of aerospace produ
9、cts a ISO3353:1992 BS2A231:1993 Rolled threads for bolts Lead and run out requirements BS6293 Aerospace MJ threads ISO5855-2:1988 Part2:1994 Limit dimensions for bolts and nuts ISO7689:1988 BS A300:1989 Specification for procurement of alloy steel bolts with strength classification1100MPa and MJ thr
10、eads ISO7913:1985 BS A296:1986 Specification for tolerances of form and position for bolts and screws. Metric series a In preparation. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, the EN title page, pages2 to 6, an inside back cover and a back cover. T
11、his 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.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN3112 June1995 ICS 49.040.20 Descriptors: Aircraft industry, aircraft equipment, scr
12、ew, hexagonal head screw, alloy steel, cadium, screw thread, specification, characteristic, dimension, mass, dimensional tolerance, surface treatment designation, marking English version Aerospace series Bolts, normal hexagonal head, threaded to head, in alloy steel, cadium plated Classification:900
13、MPa (at ambient temperature)/235 C Srie arospatiale Vis tte hexagonale normale, filetes jusqu proximit de la tte, en acier alli, cadmies Classification:900MPa ( temprature ambiante)/235 C Luft- und Raumfahrt Sechskantshrauben, Gewinde annhernd bis Kopf, aus legiertem Stahl, verkadmet Klasse:900MPa (
14、bei Raumtemperatur)/235 C. This European Standard was approved by CEN on1995-06-07. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists an
15、d bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibi
16、lity of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Por
17、tugal, Spain, Sweden, Switzerland and UnitedKingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1995 Copyright reserved to CEN members Ref. No. EN3112:1995 EEN 3112:1995 BSI 12-1999
18、 2 Foreword This European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA). After inquiries and votes carried out in accordance with the rules of this Association, this standard has successively received the approval of the National Associations and the Offic
19、ial Services of the member countries of AECMA, prior to its presentation to CEN. This standard was submitted for Formal Vote, and the result was positive. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the lat
20、est by December1995, and conflicting national standards shall be withdrawn at the latest by December1995. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ir
21、eland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, UnitedKingdom.EN 3112:1995 BSI 12-1999 3 1 Scope This standard specifies the characteristics of bolts, normal hexagonal head, threaded to head, in alloy steel, cadmium plated. Classification:900 MPa 1) /235 C 2) 2 N
22、ormative references This European Standard incorporates by dated or undated reference provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions
23、of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. ISO3353, Aerospace Rolled threads for bolts Lead and runout requirements. ISO5855-2, Aerospace MJ thre
24、ads Part2: Limit dimensions for bolts and nuts. ISO7689, Aerospace Alloy steel bolts with strength classification1100MPa and MJ threads Procurement specification. ISO7913, Aerospace Bolts and screws, metric Tolerances of form and position. EN2000, Aerospace series Quality assurance EN aerospace prod
25、ucts Approval of the quality system of manufacturers. EN2133, Cadmium plating of steels with maximum specified tensile strength equal to or less than1450MPa and copper and copper alloys Aerospace series 3) . EN2205, Steel FE-PL43 S 900MPak R m k 1100MPa Bars D e k 40mm Aerospace series 3) . EN2424,
26、Aerospace series Marking of aerospace products 3) . EN2438, Steel FE-PL62 900MPak R m k1100MPa Bars D e k 40mm Aerospace series 3) . EN2444, Steel FE-PL711 900MPak1100MPa Bars and wires D e k 45mm Aerospace series 3) . TR3775, Aerospace series Bolts and pins National materials 4) . 3 Required charac
27、teristics 3.1 Configuration Dimensions Masses See Figure 1 and Table 1. Dimensions and tolerances are expressed in millimetres and apply after surface treatment. 3.2 Tolerances of form and position ISO7913 3.3 Materials EN2205, EN2438, EN2444 or TR3775 (alloy steel, classification:900MPa) 3.4 Surfac
28、e treatment EN2133,8m to14m on all surfaces which can be contacted by a20mm diameter ball. On all other surfaces, a continuous deposit shall be present, but no value is specified. Black colour option: code B 1) Minimum tensile strength of the material at ambient temperature 2) Maximum temperature th
29、at the bolt can withstand without continuous change in its original characteristics, after return to ambient temperature. The maximum temperature is determined by the surface treatment. 3) Published as AECMA Standard at the date of publication of this standard 4) Published as AECMA Technical Report
30、at the date of publication of this standardEN 3112:1995 4 BSI 12-1999 Figure 1 EN 3112:1995 BSI 12-1999 5 Table 1 Diameter code Thread a D 1 D 2 D 3 b D 4 D 5 E F G min. min. nom. Tol. H13 min. max. min. 030 MJ3 0,54h6h 5,5 5,4 2,3 6,5 0,4 2 040 MJ4 0,74h6h 6,4 6,4 3 7,6 2,5 050 MJ5 0,84h6h 7,4 5,25
31、 7,4 3,4 1 8,7 0,2 3 060 MJ6 14h6h 9,4 6,25 9,3 4,2 10,9 0,5 3,5 070 MJ7 14h6h 10,3 7,25 10,2 5,2 1,4 12 4 080 MJ8 14h6h 12,3 8,25 12,2 6,2 14,3 4,5 100 MJ10 1,254h6h 16,3 10,25 16 7,9 1,6 18,9 0,6 0,3 5 120 MJ12 1,254h6h 18,3 12,25 18 9,8 0.5 21,1 6 140 MJ14 1,54h6h 21,3 14,25 21 11,5 24,5 7 160 MJ
32、16 1,54h6h 23,3 16,25 23 13,5 26,8 8 180 MJ18 1,54h6h 26,3 18,25 26 15,5 30,2 9 200 MJ20 1,54h6h 29,3 20,25 29 17,5 33,6 10 Diameter code H J K L 0,3 cd N R Mass e nom. Tol. Length code nom. max. min. f g 030 6 004 to042 4 to42 0,4 0,2 0,59 0,09 040 7 h12 006 to056 6 to56 1,17 0,15 050 1,35 8 3,25 0
33、08 to070 8 to70 2 0,5 0,3 2 0,25 060 1,6 10 4,1 010 to084 10 to84 2,3 0,7 0,5 3,63 0,36 070 1,85 11 4,5 010 to098 10 to98 2,7 5,1 0,5 080 2,1 13 5,35 010 to112 10 to112 3 7,59 0,67 100 2,35 17 7,1 014 to140 14 to140 3,4 0,8 0,6 15,55 1,04 120 2,85 19 h13 7,9 016 to168 16 to168 4 0,9 24,76 1,54 140 3
34、,35 22 9,2 018 to195 18 to196 4,7 1,1 0,8 38,36 2,09 160 3,85 24 10,05 020 to224 20 to224 5,4 54,55 2,79 180 4,35 27 11,3 022 to252 22 to252 6 1,3 1 77,70 3,58 200 4,85 30 12,6 022 to280 22 to280 6,7 102,24 4,46 a In accordance with ISO5855-2 b D 3 max. shall be less than J. c Increments: 2 for Lk 1
35、00 4 for L100 d If greater lengths are required, they shall be chosen using the above increments. The length code corresponds to the length L, completed by one or two zeros to the left, where necessary, to obtain a3 digit code. e Approximate values (kg/1000 pieces), calculated on the basis of7,85kg/
36、dm 3 , given for information purposes only. They apply to bolts without holes. f Value for head and first L g Increase for each additional2mm of L. 0 0,5 0 0,3 0 0,5 0 0,3EN 3112:1995 6 BSI 12-1999 4 Designation EXAMPLE: NOTEIf necessary, the code19005 shall be placed between the description block a
37、nd the identity block. Table 2 5 Marking See Table 3 and Table 1. Table 3 6 Technical specification ISO7689, with the following modifications: 6.1 Approval of manufacturers EN2000 6.2 Other modified requirements Inspection for discontinuities shall be carried out during the microstructure inspection
38、; Classification of defects: replace AQL0,065% by1%. 6.3 Requirements deleted Qualification of bolts; Tensile strength; Double shear strength; Tension fatigue strength. Holes Code with H without - (hyphen) Diameter code EN2424 Style 030 and040 N 050 to120 B 140 to200 ABSEN 3112:1995 BSI 12-1999 List
39、 of references See national foreword.BS EN3112: 1995 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the international level. It is incorpora
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