1、BRITISH STANDARDBS EN 4075:2008Aerospace series Screws, pan head, offset cruciform recess, threaded to head, in corrosion resisting steel, passivated Classification: 490 MPa (at ambient temperature) / 425 CICS 49.030.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g
2、54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 4075:2008This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 August 2008 BSI 2008ISBN 978 0 580 57075 9National forewo
3、rdThis British Standard is the UK implementation of EN 4075:2008. The UK participation in its preparation was entrusted to 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 publ
4、ication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments/corrigenda issued since publicationDate CommentsEUROPEAN STANDARD NORME EUROPE
5、NNE EUROPISCHE NORM EN 4075 March 2008 ICS 49.030.20 English Version Aerospace series - Screws, pan head, offset cruciform recess, threaded to head, in corrosion resisting steel, passivated - Classification: 490 MPa (at ambient temperature) / 425 C Srie arospatiale - Vis tte cylindrique, empreinte c
6、ruciforme dporte, filetes jusqu proximit de la tte, en acier rsistant la corrosion, passives - Classification : 490 MPa ( temprature ambiante) / 425 C Luft- und Raumfahrt - Flachkopfschrauben, mit Flgelkreuzschlitz, Gewinde annhernd bis Kopf, aus korrosionsbestndigem Stahl, verkadmet - Klasse: 490 M
7、Pa (bei Raumtemperatur) / 425 C This European Standard was approved by CEN on 26 August 2006. 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-dat
8、e lists and bibliographical references concerning such national 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 th
9、e responsibility of a CEN member into its own language and notified 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, Hung
10、ary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, 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 Centr
11、e: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4075:2008: E2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Required characteristics.5 3.1 Configuration - Dimensions - Mass
12、es .5 3.2 Tolerances of form and position5 3.3 Materials .5 3.4 Surface treatment 5 4 Designation 6 5 Marking .7 6 Technical specification .7 6.1 General7 6.2 Approval of manufacturers.7 6.3 Other modified requirements .7 6.4 Requirements deleted .7 BS EN 4075:20083 Foreword This document (EN 4075:2
13、008) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (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
14、 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 publication of an identical text or by endorsement, at the latest by September 2008, and conflicting national standards shall be withdrawn at the latest
15、by September 2008. 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 be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national sta
16、ndards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
17、Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 4075:20084 1 Scope This standard specifies the characteristics of screws, pan head, offset cruciform recess, threaded to head, in corrosion resisting steel, passivated, metric. Classification: 490 MPa 1)
18、/ 425 C 2)2 Normative references The following 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 3202, Aerosp
19、ace Screws, pan head, internal offset cruciform ribbed or unribbed drive, threaded to head, MJ threads, metallic material, coated or uncoated, strength classes less than or equal to 1 100 MPa Dimensions. ISO 3353-1, Aerospace Lead and runout threads Part 1: Rolled external threads. ISO 5855-2, Aeros
20、pace MJ threads Part 2: Limit dimensions for bolts and nuts. ISO 7913, Aerospace Bolts and screws, metric Tolerances of form and position. ISO 7994 3), Aerospace Internal drive, offset cruciform recess (Torq-Set ) for rotary fastening devices Metric series. ISO 8168, Aerospace Corrosion- and heat-re
21、sisting steel bolts with strength classification 1 100 MPa and MJ threads Procurement specification. ISO 14275, Aerospace Drives, internal, offset cruciform, ribbed Metric series. ISO 14277, Aerospace Drivers, ribbed, for internal offset cruciform ribbed or unribbed drives Metric series. ISO 14278,
22、Aerospace Gauges, for internal offset cruciform ribbed or unribbed drives Metric series. EN 2424, Aerospace series Marking of aerospace products. EN 2516, Aerospace series Passivation of corrosion resisting steels and decontamination of nickel base alloys. EN 9100, Aerospace series Quality managemen
23、t systems Requirements (based on ISO 9001:2000) and Quality systems Model for quality assurance in design, development, production, installation and servicing (based on ISO 9001:1994). TR 3775, Aerospace series Bolts and pins Materials. 4)1) Minimum tensile strength of the material at ambient temper
24、ature. 2) Maximum temperature that the screw can withstand without continuous change in its original characteristics, after return to ambient temperature. The maximum temperature is determined by the surface treatment. 3) Withdrawal, see ISO 14275, ISO 14277 and EN 14278. 4) Published as ASD Technic
25、al Report at the date of publication of this standard. BS EN 4075:20085 3 Required characteristics 3.1 Configuration - Dimensions - Masses See Figure 1 and Table 1. Dimensions and tolerances are: in conformity with ISO 3202, expressed in millimetres and apply after surface treatment. 3.2 Tolerances
26、of form and position ISO 7913 3.3 Materials TR 3775 (corrosion resisting steel, classification 490 MPa) 3.4 Surface treatment EN 2516 Values in micrometres apply prior to surface treatment. Break sharp edges 0,1 to 0,4 Key 1 Conforms to ISO 3353-1 3 Drive: see Clause 4 2 Marking 4 Thread aShape opti
27、onal Figure 1 3,2 0,8 BS EN 4075:20086 Table 1 Thread aD1D2D3E L 0,3 b, cR S Mass dDiameter code 0 0,3 min. nom. Tol. nom. Tol. Length code nom. nom. Tol. max. min. e f 030 MJ3x0,5-4h6h 6 4,7 2,3 1,8 004 to 042 4 to 42 1,2 0,3 0,5 0,11 040 MJ4x0,7-4h6h 8 6,7 3 0 0,5 2,4 006 to 056 6 to 56 0,4 1,6 0,
28、4 1,3 0,20 050 MJ5x0,8-4h6h 10 8,7 3,4 3 0 0,2008 to 070 8 to 70 0,5 2 0,5 2,8 0,31 060 MJ6x1-4h6h 12 10,7 4,2 3,6 010 to 084 10 to 84 2,4 0,6 5,0 0,44 070 MJ7x1-4h6h 14 12,7 5,2 4,2 010 to 098 10 to 98 2,8 0,7 7,5 0,60 080 MJ8x1-4h6h 16 14,7 6,2 4,8 010 to 112 10 to 1120,7 3,2 0,8 10,7 0,78 100 MJ1
29、0x1,25-4h6h 20 18,7 7,9 6 014 to 140 14 to 140 0,8 0 0,2 4 1 22,3 1,22 120 MJ12x1,25-4h6h 24 22,7 9,8 0,5 7,2 0 0,3016 to 168 16 to 168 0,9 0 0,3 4,8 1,2 38,0 1,76 aIn accordance with ISO 5855-2. bIncrements: 2 for L 100 4 for L 100 cIf greater lengths are required, they shall be chosen using the ab
30、ove increment. The length code corresponds to length L, 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 7,85 kg/dm3, given for information purposes only. eValue for head and first L. fIncrease
31、 for each additional 2 mm of L. 4 Designation EXAMPLE Description block SCREW Identity block EN4075-050040A Number of this standard Diameter code (see Table 1) Length code (see Table 1) Drive code (see Table 2) NOTE If necessary, the code I9005 shall be placed between the description block and the i
32、dentity block. Table 2 Drive Code ISO 7994 None ISO 7994 unribbed A BS EN 4075:20087 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 6.1 General ISO 8168, with the following modifications. 6.2 Approval of manufacturers EN 9
33、100 6.3 Other modified requirements Inspection for discontinuities shall be carried out during the microstructure inspection; Classification of defects: replace AQL 0,065 % by 1 %. 6.4 Requirements deleted Qualification of screws; Tensile strength; Double shear strength; Tension fatigue strength. BS
34、 EN 4075:2008BS EN 4075:2008BSI Group Headquarters389 Chiswick High Road,London W4 4AL, UKTel +44 (0)20 8996 9001Fax +44 (0)20 8996 Standards Institution (BSI)BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the
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