1、BRITISH STANDARD AEROSPACE SERIES BS EN 4303:2005 Sleeves, tubular, for tension screws with flush head, in corrosion resisting steel, passivated, (0,25 mm wall thickness) The European Standard EN 4303:2005 has the status of a British Standard ICS 49.030.99 BS EN 4303:2005 This British Standard was p
2、ublished under the authority of the Standards Policy and Strategy Committee on 25 January 2006 BSI 25 January 2006 ISBN 0 580 47575 1 National foreword This British Standard is the official English language version of EN 4303:2005. The UK participation in its preparation was entrusted to Technical C
3、ommittee ACE/12, Aerospace fasteners and fastening systems, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related
4、 international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be
5、 found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are
6、responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 7 and a back cover. The BSI copyright notice displayed i
7、n this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN4303 December2005 ICS49.030.99 EnglishVersion AerospaceseriesSleeves,tubular,fortensionscrewswith flushhead,incorrosionresistingstee
8、l,passivated,(0,25mm wallthickness) SriearospatialeDouillestubulaires,pourvisdetraction ttefraise,enacierrsistantlacorrosion,passives, (paisseurdeparoi0,25mm) LuftundRaumfahrtHlsenfrSenkschraubenmit Zugbeanspruchung,auskorrosionsbetndigemStahl, passiviert,(Wanddicke0,25mm) ThisEuropeanStandardwasapp
9、rovedbyCENon26October2005. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtot
10、heCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethen
11、ationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal, Slovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZA
12、TION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2005CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN4303:2005:EEN 4303:2005 2 Contents Page Foreword 3 1 Scope .4 2 Normative references .4 3
13、 Terms and definitions.4 4 Required characteristics 4 5 Designation .7 6 Marking 7 7 Technical specification.7 EN 4303:2005 3 Foreword This European Standard (EN 4303:2005) has been prepared by the European Association of Aerospace Manufacturers - Standardization (AECMA-STAN). After enquiries and vo
14、tes 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 given the status of a national standard
15、, either by publication of an identical text or by endorsement, at the latest by June 2006, and conflicting national standards shall be withdrawn at the latest by June 2006. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/
16、or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark,
17、 Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. 4 1 Scope This standard specifies the characteristics and technical requir
18、ements of tubular sleeves for tension screws with flush head, which may be plain or provided with a series of annular grooves, in corrosion resisting steel, passivated, with a 0,25 mm wall thickness, for maximum operating temperature 650 C, for aerospace applications. 2 Normative references The foll
19、owing referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 2859-1, Sampling procedures for inspection by attribu
20、tes Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection. EN 2175, Aerospace series Heat resisting alloy FE-PA2602 (X4NiCrTiMoV26-15) Solution treated and precipitation treated Sheet, strip and plate 0,5 mm a 10 mm R m 850 MPa. 1)EN 2424, Aerospace series Mark
21、ing of aerospace products. EN 2516, Aerospace series Passivation of corrosion resisting steels and decontamination of nickel base alloys. 3 Terms and definitions For the purposes of this standard, the following terms and definitions apply. 3.1 crack rupture in the material which may extend in any di
22、rection and which may be intercrystalline or transcrystalline in character 3.2 seam open surface defect which is the result of the extrusion of the material 3.3 lap surface defect caused by folding over metal fins or sharp corners and then rolling or forging them into the surface 4 Required characte
23、ristics 4.1 Configuration - Dimensions - Masses See Figure 1 and Tables 1 and 2. Dimensions and tolerances are expressed in millimetres and apply after surface treatment. 1) Published as AECMA Prestandard at the date of publication of this standard. EN 4303:20055 4.2 Material EN 2175, received in th
24、e annealed condition and cold work during manufacture 4.3 Surface treatment EN 2516 Values in micrometres apply prior to surface treatment. Remove sharp edges 0,1 to 0,2. Key 1 Z: Number of grooves. The Pitch of groove = 2 aUnspecified dimensions: as plain form bAt manufacturers option cForm of groo
25、ve at manufacturers option Figure 1 Plain form (code “P“) Grooved form (code “G“) a3,2 0,8 3,2 EN 4303:20056 Table 1 D 1D 2D 3L 2L 3L 4L 5R Z Diameter codemax. min. 0,3 max. min. 0,5 0,5 + 0,25 0,05 050 4,999 4,96 10 5,499 5,474 2,1 2,22 5,5 060 5,999 5,96 12 6,499 7,474 2,6 2,72 4 7 080 7,994 7,955
26、 16 8,494 8,47 3,4 3,52 7 6 100 9,994 9,955 20 10,49410,47 4,2 4,32 6 10 5 120 11,994 11,995 24 12,49412,47 5 5,12 0,5 Table 2 Diameter code 050 060 080 100 120 Length Form code acode L 1 0 5 0, +Mass b030 3 0,218 045 4,5 0,267 0,293 060 6 0,315 0,364 0,520 075 7,5 0,364 0,435 0,597 0,812 090 9 0,41
27、2 0,505 0,676 0,906 105 10,5 0,461 0,576 0,749 1,001 1,196 120 12 0,509 0,647 0,825 1,096 1,309 135 13,5 0,558 0,718 0,902 1,190 1,422 150 15 0,606 0,789 0,981 1,285 1,536 165 16,5 0,655 0,859 1,054 1,380 1,649 180 18 0,703 0,930 1,130 1,474 1,762 195 19,5 0,752 1,001 1,206 1,569 1,875 210 21 0,800
28、1,072 1,287 1,664 1,989 225 22,5 0,849 1,143 1,359 1,758 2,102 240 24 0,897 1,213 1,435 1,853 2,215 P 250 25 0,930 1,260 1,485 1,916 2,290 G 250 25 0,930 1,260 1,485 1,916 2,290 aSee Figure 1. bApproximate values (kg/1 000 pieces), calculated on the basis of 7,85 kg/dm 3 , given for information purp
29、oses onlyEN 4303:20057 5 Designation EXAMPLE Description block SLEEVE Identity block EN4303P050045 Number of this standard Form code (see Table 2 and Figure 1) Diameter code (see Table 1) Length code (see Table 2) NOTE If necessary, the code I9005 shall be placed between the description block and th
30、e identity block. 6 Marking EN 2424, style G 7 Technical specification 7.1 Manufacture The sleeves shall be formed by a drawing process from sheet or strip stock to form a one piece tubular section and head. 7.2 Surface appearance The sleeves shall be free from cracks, seams and laps. Under visual e
31、xamination, the sleeves may show axial flow lines in the tubular section typical of a drawn sleeve. The flow lines shall be continuous at the fillet radius. A slight visible orange peel effect is also permissible. 7.3 Sampling In conformity with ISO 2859-1, using normal or reduced inspection methods
32、. The acceptance quality limit (AQL) is 1 %. EN 4303:2005BS EN 4303:2005 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the internationa
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