1、BS EN 4161:2009ICS 49.030.20NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDAerospace series Screws, pan head,offset cruciform recess,coarse tolerancenormal shank, longthread, in alloy steel,cadmium plated Classification : 1 100PMa (at ambienttemperature) / 235
2、CIncorporatingcorrigendumApril 2010National forewordThis British Standard is the UK implementation of EN 4161:2009, incorporating corrigendum April 2010.The start and finish of text introduced or altered by corrigendum is indicated in the text by tags. Text altered by CEN corrigendum April 2010 is i
3、ndicated in the text by .The UK participation in its preparation was entrusted by Technical Committee ACE/12, Aerospace fasteners and fastening systems.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all t
4、he necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.BS EN 4161:2009This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 Januar
5、y 2010 BSI 2010Amendments/corrigenda issued since publicationDate Comments 30 June 2010 Implementation of CEN corrigendum April 2010ISBN 978 0 580 71483 2EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 4161 November 2009 ICS 49.030.20 English Version Aerospace series - Screws, pan head, offset
6、cruciform recess, coarse tolerance normal shank, long thread, in alloy steel, cadmium plated - Classification : 1 100 PMa (at ambient temperature) / 235 C Srie arospatiale - Vis tte cylindrique, empreinte cruciforme dporte, tige normale tolrance large, filetage long, en acier alli, cadmies - Classif
7、ication : 1 100 MPa ( temprature ambiante) / 235 C Luft- und Raumfahrt - Flachkopfschrauben, mit Flgelkreuzschlitz, langes Gewinde, aus legiertem Stahl, verkadmet - Klasse : 1 100 MPa (bei Raumtemperatur) / 235 C This European Standard was approved by CEN on 15 September 2009. CEN members are bound
8、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 CEN
9、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 notified to the CEN Management Centre has the same status
10、 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, Malta, Netherlands, Norway, Poland, Portugal, Romania,
11、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 exploitation in any form and by any means reserved world
12、wide for CEN national Members. Ref. No. EN 4161:2009: EIncorporating corrigendum April 2010BS EN 4161:2009EN 4161:2009 (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 .
13、53.4 Surface treatment 54 Designation 85 Marking .86 Technical specification .8BS EN 4161:2009EN 4161:2009 (E) 3 Foreword This document (EN 4161:2009) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried out i
14、n 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 given the status of a national standard, either by publica
15、tion 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 the subject of patent rights. CEN and/or CENELEC shall not
16、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, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, F
17、inland, 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. BS EN 4161:2009EN 4161:2009 (E) 4 1 Scope This European Standard specifies t
18、he characteristics of screws, pan head, offset cruciform recess, coarse tolerance normal shank, long thread, in alloy steel, cadmium plated. Classification: 1 100 MPa1)/ 235 C2). 2 Normative references The following referenced documents are indispensable for the application of this document. For dat
19、ed references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2133, Aerospace series Cadmium plating of steels with specified tensile strength 1 450 MPa, copper, copper alloys and nickel alloys EN 2137, Aer
20、ospace series Steel Fe-PL75 1 100 MPa Rm 1 250 MPa Bars De100. eIf greater lengths are required, they shall be chosen using the above increments. The length code corresponds to the length L4, completed by one or two zeros to the left, where necessary, to obtain a three digit code. fApproximate value
21、s (kg/1 100 pieces), calculated on the basis of 7,85 kg/dm, given for information purposes only. gValue for head and first L4. hIncrease for each additional 2 mm of L4. BS EN 4161:2009EN 4161:2009 (E) 8 4 Designation EXAMPLE Description block Identity block SCREW EN4161 050 040 A B Number of this st
22、andard Diameter code (see Table 1) Length code (see Table 1) Drive code (see Table 2) Black colour code (see 3.4) NOTE If necessary, the code I9005 may be placed between the description block and the identity block. Table 2 5 Marking See Table 3 and Figure 1. Table 3 Diameter code EN 2424 Style 030
23、and 040 N 050 to 120 B 6 Technical specification ISO 7689, except for clauses: a) Approval of manufacturers: see EN 9100 ; b) Qualification of screws: see EN 9133. Drive Code ISO 14275 None ISO 14277 ISO 14278 unribbed A BS EN 4161:2009This page has been intentionally left blankBSI GroupHeadquarters
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