1、BS EN 4178:2009ICS 49.030.10NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDAerospace series Screws, pan head, sixlobe recess, coarsetolerance normalshank, medium lengththread, in titaniumalloy, anodized, MoS2lubricated 1 100MPa (at ambienttemperature) / 315 CCo
2、pyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-This British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 31 December2009 BSI 2009ISBN 9
3、78 0 580 68941 3Amendments/corrigenda issued since publicationDate CommentsBS EN 4178:2009National forewordThis British Standard is the UK implementation of EN 4178:2009.The UK participation in its preparation was entrusted to TechnicalCommittee ACE/12, Aerospace fasteners and fastening systems.A li
4、st of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal o
5、bligations.Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 4178:2009EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 4178 November 2009 ICS 49.030.10 English Version Ae
6、rospace series - Screws, pan head, six lobe recess, coarse tolerance normal shank, medium length thread, in titanium alloy, anodized, MoS2 lubricated - 1 100 MPa (at ambient temperature) / 315 C Srie arospatiale - Vis tte cylindrique, empreinte six lobes, tige normale tolrance large, filetage moyen,
7、 en alliage de titane, anodises, lubrifies MoS2 - 1 100 MPa (temprature ambiante) / 315 C Luft- und Raumfahrt - Flachkopfschrauben mit Sechs-Bogenzahn; mit mittlerer Gewindelnge, aus Titanlegierung, anodisiert, MoS2-geschmiert - 1 100 MPa (bei Raumtemperatur) / 315 C This European Standard was appro
8、ved by CEN on 17 September 2009. 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 and bibliographical references concerning such nation
9、al standards may be obtained on application to the CEN Management Centre 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 responsibility of a CEN member into its own language and no
10、tified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg,
11、Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of e
12、xploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4178:2009: ECopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 4178:2009EN 41
13、78:2009 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Required characteristics .53.1 Configuration Dimensions Masses 53.2 Tolerances of form and position 53.3 Materials .53.4 Surface treatment 54 Designation 85 Marking .86 Technical specification .8Copyright European Committee for
14、 Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 4178:2009EN 4178:2009 (E) 3 Foreword This document (EN 4178:2009) has been prepared by the Aerospace and Defence Industries Association of Europe - Standard
15、ization (ASD-STAN). After enquiries 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 ASD, prior to its presentation to CEN. This European Standard shall be
16、 given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2010, and conflicting national standards shall be withdrawn at the latest by May 2010. Attention is drawn to the possibility that some of the elements of this document may be
17、the subject of patent rights. CEN and/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, Bel
18、gium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Copyright Europea
19、n Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 4178:2009EN 4178:2009 (E) 4 1 Scope This European Standard specifies the characteristics of screws, pan head, six lobe recess, coarse toleran
20、ce normal shank, medium length thread, in titanium alloy, anodized, MoS2lubricated. Classification : 1 100 MPa1) / 315 C2).2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applied. For undat
21、ed references, the latest edition of the referenced document (including any amendments) applies. EN 2424 , Aerospace series Marking of aerospace productsEN 2491 , Aerospace series Molybdeum disulphide dry lubricants Coating methods EN 3042 , Aerospace series Quality assurance EN aerospace products Q
22、ualification procedure EN 3911 , Aerospace series Six lobe recess Geometrical definition3)EN 9100, Quality Management Systems Requirements for Aviation, Space and Defense Organizations TR 3775, Aerospace series Bolts and pins National materials4)TR 4070, Aerospace series Molybdenum disulphide dry lu
23、bricants List of commercial products4) ISO 3353-1, Aerospace Lead and runout threads Part 1: Rolled external threads ISO 5855-2, Aerospace MJ threads Part 2: Limit dimensions for bolts and nuts ISO 7913, Aerospace Bolts and screws, metric Tolerances of form and position ISO 9152, Aerospace Bolts, wi
24、th MJ threads, in titanium alloys, strength class 1 100 MPa Procurement specification NAS 1800-90, Recess, Six Lobe Drive Internal Dimensions for Recess and Gages5)1) Minimum tensile strength of the material at ambient temperature. 2) Maximum temperature that the screw can withstand without continuo
25、us change in its original characteristics, after return to ambient temperature. The maximum temperature is determined by the surface treatment. 3) Published as ASD-STAN Prestandard at the date of publication of this standard. 4) Published as ASD-STAN Technical Report at the date of publication of th
26、is standard. 5) Published by: Aerospace Industries Association of America, Inc., 1250 Eye street, NW Washington, DC 20005, United States. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from
27、IHS-,-,-BS EN 4178:2009EN 4178:2009 (E) 5 3 Required characteristics 3.1 Configuration Dimensions Masses See Figure 1 and Table 1. Dimensions and tolerances are expressed in millimetres and apply after anodizing but before lubricating. 3.2 Tolerances of form and position ISO 7913 and those specified
28、 in Figure 1 and Table 1. 3.3 Materials TR 3775 (titanium alloy, classification 1 100 MPa). 3.4 Surface treatment Lubrication: a) Lubricant: see Clause 4; b) Application: EN 2491, 5 m to 10 m.Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo repr
29、oduction or networking permitted without license from IHS-,-,-BS EN 4178:2009EN 4178:2009 (E) 6 Dimensions in millimetres Key 1 Thread 2 Marking a Conforms to ISO 3353-1 b Radius or chamfer c Two holes optional d Three holes optional Figure 1Copyright European Committee for Standardization Provided
30、by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 4178:2009EN 4178:2009 (E) 7 Table 1 Diametercode Thread aD1D2D3D4D5D6D7E G H h12 h13 nom. Tol. min. H13 max H13 nom. Tol. nom Tol. 030 MJ3x0,5 4h6h 3 5,5 2,3 0 - 0,5 5,07 1 3,4 - 1,5
31、 0 + 0,2 0,3 3 h13 040 MJ4x0,7 4h6h 4 7 3 6,53 3,9 1,1 2 0,4 4 050 MJ5x0,8 4h6h 5 8,5 3,4 + 0,5 8,03 5,1 1,5 2,5 0,5 5 060 MJ6x1 4h6h 6 10 4,2 9,38 1,4 6,3 3 0 + 0,3 0,6 6 h14 080 MJ8x1 4h6h 8 13 6,2 12,33 7,5 1,9 4 0,8 8 100 MJ10x1,25 4h6h 10 16 7,9 15,33 1,6 10,2 2,4 5 0 + 0,5 1 10 120 MJ12x1,25 4
32、h6h 12 18 9,8 17,23 13,8 6 1,2 12 (concluded) Diameter code K L1 0,2b cL2L3R W Recess Mass d 0,1 Length code nom. max min. EN 3911 code NAS 1800 number ef030 0,9 002 to 030 2 to 30 7,5 - 0,4 0,2 - - T10 1,04 0,055 040 1,4 002 to 040 2 to 40 10 6 0,22 25 - 2,26 0,1 050 1,6 003 to 050 3 to 50 12 7,5 0
33、,5 0,3 27 - 4,55 0,153 060 2 003 to 060 3 to 60 14 8,5 0,7 0,5 - T30 6,95 0,222 080 2,4 004 to 080 4 to 80 16,5 10,5 0,27 45 - 15,44 0,395 100 005 to100 5 to 100 20,5 13 0,8 0,6 - T50 29,3 0,616 120 006 to120 6 to 120 22,5 14,5 0,9 - T55 43,1 0,887 aIn accordance with ISO 5855-2. bIncrements: 1 for
34、L1100. cIf greater lengths are required, they shall be chosen using the above increments. The length code corresponds to the length L1, completed by one or two zeros to the left, where necessary, to obtain a three digit code. dApproximate values (kg/1 000 pieces), calculated on the basis of 4,45 kg/
35、dm, given for information purposes only. They apply to screws without holes. eValue for head and first L4. fIncrease for each additional millimetre of L4. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted with
36、out license from IHS-,-,-BS EN 4178:2009EN 4178:2009 (E) 8 4 Designation EXAMPLE Description block Identity block SCREW EN4178 H 050 040 F Number of this standard Hole code (see Table 2) Diameter code (see Table 1) Length code (see Table 1) Lubricant code (see TR 4070) NOTE If necessary, the code I9
37、005 shall be placed between the description block and the identity block. Table 2 Holes Code Lockwire H Split pin D Lockwire and split pin C No hole - (hyphen) 5 Marking See Table 3 and Figure 1. Table 3 Diameter code En 2424 Style 030 and 040 N 050 to 120 B 6 Technical specification ISO 9152, excep
38、t for clauses: a) Approval of manufacturers: see EN 9100; b) Qualification of screws: see EN 3042. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 4178:2009This page has be
39、en intentionally left blankCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN4178:2009BSI GroupHeadquarters 389Chiswick High Road,London, W4 4AL, UKTel +44 (0)20 8996 9001Fax
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