1、BRITISH STANDARD BS EN 2874:1996 Bolts, large bihexagonal head, close tolerance normal shank, medium length thread, in heat resisting nickel base alloy, passivated Classification: 1550MPa (at ambient temperature)/315 C The European Standard EN 2874:1996 has the status of a British Standard ICS 49.04
2、0.20BSEN2874:1996 This British Standard, having been prepared under the directionof the Engineering SectorBoard, was published underthe authority of the Standards Board and comes intoeffect on 15 December 1996 BSI 11-1998 The following BSI references relate to the work on this standard: Committee re
3、ference ACE/12 Draft for comment 92/82017 DC ISBN 0 580 26350 9 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee ACE/12, Aerospace fasteners and fastening systems, upon which the following bodies were represented: Associat
4、ion of Electronic, Telecommunications and Business Equipment Industries British Industrial Fasteners Federation Ministry of Defence Society of British Aerospace Companies Amendments issued since publication Amd. No. Date CommentsBSEN2874:1996 BSI 11-1998 i Contents Page Committees responsible Inside
5、 front cover National foreword ii Foreword 2 1 Scope 3 2 Normative references 3 3 Required characteristics 3 4 Designation 6 5 Marking 6 6 Technical specification 6 7 Oversize bolts 6 Figure 1 4 Table 1 5 Table 2 6 List of references Inside back coverBSEN2874:1996 ii BSI 11-1998 National foreword Th
6、is British Standard has been prepared by Technical Committee ACE/12 and is the English language version of EN 2874:1996 Aerospace series Bolts, large bihexagonal head, close tolerance normal shank, medium length thread, in heat resisting nickel base alloy, passivated Classification: 1550 MPa (at amb
7、ient temperature)/315 C, published by the European Committee for Standardization (CEN). EN 2874:1996 was produced as a 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
8、 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 Publication referred to Corresponding British Standard ISO 3186:1994 BS A 310:1995 Bolts, large bihexagonal head, normal
9、 shank, short or medium length MJ threads, metallic material, coated or uncoated, strength classes 1250 MPa to 1800 MPa. Dimensions ISO 3353:1992 BS 2A 231:1993 Rolled threads for bolts. Lead and runout requirements ISO 5855-2:1988 BS 6293 Aerospace. MJ threads Part 2:1994 Limit dimensions for bolts
10、 and nuts ISO 7913:1994 BS 2A 296:1995 Bolts and screws, metric. Tolerances of form and position EN 2000:1991 BS EN 2000:1992 Quality assurance. EN aerospace products. Approval of the quality system of manufacturers EN 2424:1995 BS EN 2424:1995 Marking of aerospace products EN 3042:1991 BS EN 3042:1
11、992 Quality assurance. EN aerospace products. Qualification procedures Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, theEN title page, pages 2 to 6, an inside back cover and a back cover. This standard has been updated (see copyright date) and may hav
12、e had amendments incorporated. This will be indicated in the amendment table on theinside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2874 July 1996 ICS 49.040.20 Descriptors: Aircraft industry, screw, double hexagonal head screw, nickel alloy, heat resistant material, specifica
13、tion, dimension, dimensional tolerance, surface treatment, designation, marking English version Aerospace series Bolts, large bihexagonal head, close tolerance normal shank, medium length thread, in heat resisting nickel base alloy, passivated Classification: 1550 MPa (at ambient temperature)/315 C
14、Srie arospatiale Vis tte bihexagonale large, tige normale tolrance serre, filetage moyen, en alliage rsistant chaud base de nickel, passives Classification: 1550 MPa ( temprature ambiante)/315 C Luft- und Raumfahrt Zwlfkant- Paschrauben mittlere Gewindelnge, aus hochwarmfester Nickelbasislegierung,
15、passiviert Klasse: 1550 Mpa (bei Raumtemperatur)/315 C This European Standard was approved by CEN on 1996-06-29. 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 al
16、teration. Up-to-date lists and 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 tra
17、nslation under the responsibility 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, Luxembo
18、urg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1996 Copyright reserved to CEN members Ref. No. EN 2874
19、:1996 EEN2874:1996 BSI 11-1998 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 received the approval of the National Associati
20、ons and the Official Services of the member countries of AECMA, prior to its presentation to CEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 1997, and conflicting national standards s
21、hall be withdrawn at the latest by January 1997. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Lux
22、embourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.EN2874:1996 BSI 11-1998 3 1 Scope This standard specifies the characteristics of bolts, large bihexagonal head, close tolerance normal shank, medium length thread, in heat resisting nickel base alloy, passivate
23、d. Classification: 1 550 MPa 1) /315 C 2) 2 Normative 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 refer
24、ences, subsequent amendments to or revisions 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. ISO 3186, Aerospace Bolts, large bihexagonal head, normal
25、 shank, short or medium length MJ threads, metallic material, coated or uncoated, strength classes 1250 MPa to 1800 MPa Dimensions. ISO 3353, Aerospace Rolled threads for bolts Lead and runout requirements. ISO 4095, Fasteners for aerospace construction Bi-hexagonal wrenching configuration. ISO 5855
26、-2, Aerospace MJ threads Part2:Limit dimensions for bolts and nuts. ISO 7913, Aerospace Bolts and screws, metric Tolerances of form and position. ISO 9154, Aerospace Bolts, strength class1550MPa, MJ threads Procurement specification 3) . EN 2000, Aerospace series Quality assurance EN aerospace produ
27、cts Approval of the quality system of manufacturers. EN 2424, Aerospace series Marking of aerospace products. EN 2516, Aerospace series Passivation of corrosion resistant steels and decontamination of nickel based alloys 4) . EN 3042, Aerospace series Quality assurance EN aerospace products Qualific
28、ation procedure. EN 3769, Aerospace series Electrolytic polishing of corrosion resistant steels and heat resisting alloys 4) . EN 4016, Aerospace series Oversized bolts 5) . TR 3775, Aerospace series Bolts and pins National materials 6) . 3 Required characteristics 3.1 Configuration Dimensions Masse
29、s See Figure 1 and Table 1. Dimensions and tolerances are: in conformity withISO 3186, expressed in millimetres and apply after surface treatment. 3.2 Tolerances of form and position ISO 7913 3.3 Materials TR 3775 (heat resisting nickel base alloy, strength class 1550 MPa) 3.4 Surface treatments EN
30、2516 or EN 3769 on the head (except bearing face), then EN2516 on all the bolt. In this case, code P shall be used in the designation. 1) Minimum tensile strength of the material at ambient temperature 2) Maximum temperature that the bolt can withstand without continuous change in its original chara
31、cteristics, after return to ambient temperature. The maximum temperature is determined by the surface treatment. 3) In preparation at the date of publication of this standard 4) Published as AECMA Standard at the date of publication of this standard 5) Published as AECMA Prestandard at the date of p
32、ublication of this standard 6) Published as AECMA Technical Report at the date of publication of this standardEN 2874:1996 4 BSI 11-1998 Figure 1 EN 2874:1996 BSI 11-1998 5 Table 1 Diameter code Thread a D 1 D 2 D 3 D 4 D 5 D 6 D 7 H K L 1 0,2 bc L 2 P R S T Wrenching dash number d Mass e f7 0,5 min
33、. min. max. H13 min. h15 Code nom. min. f g 050 MJ50,8 4h6h 5 2,5 3,4 6,8 9,5 10,3 1 1,5 7,4 003 to 050 3 to 50 12,5 5,3 0,8 3,3 2,8 07 5,18 0,16 060 MJ61 4h6h 6 3,2 4,2 7,8 11 11,8 1,7 8,4 003 to 060 3 to 60 15 6,1 3,8 3,5 08 7,92 0,23 070 MJ71 4h6h 7 3,9 5,2 8,8 12,5 13,3 1,4 1,9 9,2 004 to 070 4
34、to 70 16 6,7 1 4,2 3,8 09 12,40 0,32 080 MJ81 4h6h 8 4,5 6,2 9,8 14 14,8 2,1 9,8 004 to 080 4 to 80 17 7,2 4,6 3,9 10 15,85 0,42 100 MJ101,25 4h6h 10 6,1 7,9 11,8 17,3 18,3 2,5 11,6 005 to 100 5 to 100 21 8,5 1,2 5,5 4,2 12 29,07 0,64 120 MJ121,25 4h6h 12 7,7 9,8 13,7 20,9 22 2,9 12,9 006 to 120 6 t
35、o 120 23,5 9,6 1,4 6,4 4,5 14 46,85 0,92 140 MJ141,5 4h6h 14 10,3 11,5 16,7 23,9 25 3,3 14,3 007 to 140 7 to 140 27,5 10,8 7,1 5,1 17 70,36 1,16 160 MJ161,5 4h6h 16 11,9 13,5 18,6 27,4 28,5 1,6 3,7 15,8 008 to 160 8 to 160 30 12,4 8,4 5,3 19 103,45 1,65 180 MJ181,5 4h6h 18 14,5 15,5 21,6 30,4 31,5 4
36、,1 17,1 009 to 180 9 to 180 33 13,9 9,4 6,1 22 143,20 2,10 200 MJ201,5 4h6h 20 16 17,5 23,6 33,4 34,5 4,5 18,6 010 to 200 10 to 200 35,5 15,3 1,8 10,5 6,6 24 190,60 2,60 220 MJ221,5 4h6h 22 18,6 19,5 26,6 36,4 37,5 4,9 19,9 011 to 220 11 to 220 38 16,8 11,6 7,4 27 274,00 3,10 240 MJ242 4h6h 24 21,2
37、20,9 29,6 39,4 40,5 5,3 21,9 012 to 240 12 to 240 43,5 18,3 12,7 8,2 30 365,90 3,70 a In accordance with ISO 5855-2, except the thread major diameter “d max.” which shall be equal to D 1min. 0,025. b Increments: 1 for L 1 30 2 for 30 100 c If greater lengths are required, these shall be chosen using
38、 the above increments. The length code corresponds to the length L 1 , completed by one or two zeros to the left, where necessary, to obtain a three digit code. d In accordance with ISO 4095 over T min. e Approximate values (kg/1 000 pieces), calculated on the basis of 8,25 kg/dm 3 , given for infor
39、mation purposes only. They apply to bolts without holes. f Values for head and first L 3 g Increase for each additional millimetre of L 3 . + 1 0 0 0,2 + 0,4 0EN2874:1996 6 BSI 11-1998 4 Designation EXAMPLE: NOTEIf necessary, the code I9005 shall be placed between the description block and the ident
40、ity block. Table 2 5 Marking EN 2424, style C plus MJ, indented (see Figure 1). 6 Technical specification ISO 9154, except for clauses: Approval of manufacturers: see EN 2000; Qualification of bolts: see EN 3042. 7 Oversized bolts EN 4016 Holes Code with H without (hyphen)BSEN 2874:1996 BSI 11-1998
41、List of references See national foreword.BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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