1、BRITISH STANDARD AEROSPACE SERIES BS EN 2650:1997 Screws, pan head, slotted, threaded to head, in corrosion resisting steel, passivated Classification: 600 MPa (at ambient temperature)/425 C The European Standard EN 2650:1996 has the status of a British Standard ICS 49.030.20BSEN 2650:1997 This Brit
2、ish Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 January 1997 BSI 11-1998 The following BSI references relate to the work on this standard: Committee reference ACE/12 Draft for
3、 comment 89/78849 DC ISBN 0 580 26903 5 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: Association of Electronic, Telec
4、ommunications and Business Equipment Industries British Industrial Fasteners Federation Ministry of Defence Society of British Aerospace Companies Amendments issued since publication Amd. No. Date CommentsBSEN 2650:1997 BSI 11-1998 i Contents Page Committees responsible Inside front cover National f
5、oreword ii Foreword 2 1 Scope 3 2 Normative references 3 3 Required characteristics 3 4 Designation 6 5 Marking 6 6 Approval of manufacturers 6 7 Packaging and labelling 6 Figure 1 4 Table 1 5 Table 2 6 List of references Inside back coverBSEN 2650:1997 ii BSI 11-1998 National foreword This British
6、Standard has been prepared by Technical Committee ACE/12 and is the English language version of EN 2650:1996 Aerospace series Screws, panhead, slotted, threaded to head, in corrosion resisting steel, passivated Classification: 600 MPa (at ambient temperature)/425 C, published by the European Committ
7、ee for Standardization (CEN). EN 2650:1996 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 of British Standards are responsible for their correct ap
8、plication. Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross-references Publication referred to Corresponding British Standard EN 2000:1991 BS EN 2000:1992 Quality assurance. EN aerospace products. Approval of the quality system of manufacturers EN 2
9、424:1995 BS EN 2424:1995 Marking of aerospace products ISO 3353:1992 BS 2A 231:1993 Rolled threads for bolts. Lead and runout requirements ISO 5855-2:1988 BS 6293 Aerospace. MI threads Part 2:1994 Limit dimensions for bolts and nuts ISO 7913:1994 BS 2A 296:1995 Bolts and screws, metric. Tolerances o
10、f form and position Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, theENtitle page, pages 2 to 6, 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 indicate
11、d in the amendment table on theinside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2650 August 1996 ICS 49.040.20 Descriptors: Aircraft industry, screw, cheese head screw, heat resistant steel, corrosion resistant steel, specification, dimension, dimensional tolerance, designatio
12、n, marking English version Aerospace series Screws, pan head, slotted, threaded to head, in corrosion resisting steel, passivated Classification: 600 MPa (at ambient temperature)/425 C Srie arospatiale Vis tte cylindrique fendue, filetes jusqu proximit de la tte, en acier rsistant la corrosion, pass
13、ives Classification: 600 MPa ( temprature ambiante)/425 C Luft-und Raumfahrt Flachkopfschrauben mit Schlitz, Gewinde annhernd bis Kopf, aus korrosionsbestndigem Stahl, passiviert Klasse: 600 MPa (bei Raumtemperatur)/425 C This European Standard was approved by CEN on 1996-06-29. CEN members are boun
14、d 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 and bibliographical references concerning such national standards may be obtained on application to the Ce
15、ntral Secretariat or to any CEN member. The European Standards exist in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as
16、 the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Eu
17、ropen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1996 Copyright reserved to CEN members Ref. No. EN 2650:1996 EEN2650:1996 BSI 11-1998 2 Foreword This European Standard has been prepared by the European Association of Aerospace Manufactur
18、ers (AECMA). After inquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of AECMA, prior to its presentation to CEN. This European Standard shall be give
19、n the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 1997, and conflicting national standards shall be withdrawn at the latest by February 1997. According to the CEN/CENELEC Internal Regulations, the national standards organizat
20、ions of the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.EN2650:1996 BSI 11-1998 3 1 Scope This sta
21、ndard specifies the characteristics of screws, pan head, slotted, threaded to head, in corrosion resisting steel, passivated. Classification: 600 MPa 1) /425 C 2) 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publications. These normat
22、ive references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, 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 refere
23、nces the latest edition of the publication referred to applies. ISO 3353, Aerospace Rolled threads for bolts Lead and runout requirements. ISO 5855-2, Aerospace MJ threads Part2:Limit dimensions for bolts and nuts. ISO 7913, Aerospace Bolts and screws, metric Tolerances of form and position. EN 2000
24、, Aerospace series Quality assurance EN aerospace products 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 base alloys 3) . TR 3775, Aerospace s
25、eries Bolts and pins National materials 4) . 3 Required characteristics 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 ISO 7913 and Figure 1 and Table 1 3.3 Ma
26、terials TR 3775 (corrosion resisting steel, strength class:600 MPa) 3.4 Surface treatment EN 2516 1) Minimum tensile strength of the material at ambient temperature 2) Maximum temperature that the screw can withstand without continuous change in its original characteristics, after return to ambient
27、temperature. The maximum temperature is determined by the material. 3) Published as AECMA Standard at the date of publication of this standard 4) Published as AECMA Technical Report at the date of publication of this standardEN2650:1996 4 BSI 11-1998 Figure 1EN2650:1996 BSI 11-1998 5 Table 1 Diamete
28、r code Thread a D 1 D 2 D 3 E F G H min. nom. Tol. nom. Tol. min. min. nom. Tol. 016 MJ1,60,35 4h6h 3,2 1,9 1,1 1 0,4 0,4 0,45020 MJ20,4 4h6h 4 2,7 1,4 1,2 0,5 0,5 0,55 025 MJ2,50,45 4h6h 5 3,7 1,9 1,5 0,6 0,6 0,65 030 MJ30,5 4h6h 6 4,7 2,3 1,8 0,7 0,7 0,85 035 MJ3,50,6 4h6h 7 5,7 2,7 2,1 0,8 0,8 0,
29、95 040 MJ40,7 4h6h 8 6,7 3 2,4 1 1 1,05 050 MJ50,8 4h6h 10 8,7 3,4 0,5 3 1,2 1,2 1,25 060 MJ61 4h6h 12 10,7 4,2 3,6 1,5 1,5 1,65 0 0a 3 , 0 05 , 0 02 , 015 , + 0025 , + 0 0 03 , Diameter code L 0,3 bc R S T Mass d Code nom. max. min. e f 016 004 to 022 4 to 22 0,3 0,7 0,2 0,08 0,100 0,023 020 004 to
30、 028 4 to 28 0,8 0,1 0,176 0,037 025 004 to 036 4 to 36 1 0,3 0,12 0,321 0,060 030 004 to 042 4 to 42 0,4 1,2 0,15 0,524 0,088 035 006 to 050 6 to 50 1,4 0,4 0,17 0,91 0,12 040 006 to 056 6 to 56 1,6 0,2 1,29 0,15 050 008 to 070 8 to 70 0,5 2 0,5 0,25 2,61 0,25 060 010 to 084 10 to 84 0,7 2,4 0,6 0,
31、3 4,54 0,35 a In accordance with ISO 5855-2, rolled b Increments: 2 for L 100 4 for L 100 c 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 a three dig
32、it code. d Approximate values (kg/1 000 pieces), calculated on the basis of 7,85 kg/dm 3 , given for information purposes only e Value for head and first L f Increase for each additional 2 mm of L. 0 02 , EN2650:1996 6 BSI 11-1998 4 Designation EXAMPLE: NOTEIf necessary, the code 19005 shall be plac
33、ed between the description block and the identity block. 5 Marking See Table 2, plus MJ, and Figure 1. Table 2 6 Approval of manufacturers EN 2000 7 Packaging and labelling 7.1 Packaging It shall prevent any damage or corrosion occuring during handling and transportation. Each package shall only con
34、tain screws of the same identity block, taken from the same inspection batch. 7.2 Labelling Each package shall bear a label on which the identity block, quantity, production batch number and inspectors stamp have been recorded. Diameter code EN 2424 Style 016 to 035 G 040 to 060 F (indented)BSEN 265
35、0:1997 BSI 11-1998 List of references See national foreword.BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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