1、BRITISH STANDARD AEROSPACE SERIESBS EN4311:2006Studs, coarse tolerance reduced shank, medium length threads, in heat and corrosion resisting steel, MoS2 lubricated Classification: 1 100 MPa (at ambient temperature) / 315 CThe European Standard EN 4311:2006 has the status of a British StandardICS 49.
2、030.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 4311:2006This British Standard was published under the authority of the Standards Policy
3、 and Strategy Committee on 30 June 2006 BSI 2006ISBN 0 580 48530 7National forewordThis British Standard is the official English language version of EN 4311:2006. The UK participation in its preparation was entrusted to Technical Committee ACE/12, Aerospace fasteners and fastening systems, which has
4、 the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section enti
5、tled “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 responsible for its correct application. Compliance
6、 with a British Standard does not of itself confer immunity from legal obligations. 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 internat
7、ional and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 8, an inside back cover and a back cover.The BSI copyright notice displayed in this document indicates when the document was last
8、issued.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 4311 June 2006 ICS 49.030.20 English Version Aerospace series - Studs, coarse tolerance reduced shank, medium length threads, in heat and corrosion resisting steel, MoS2 lubricated -
9、Classification : 1 100 MPa (at ambient temperature) / 315 C Srie arospatiale - Goujons, tige rduite tolrance large, filetage moyen, en acier rsistant chaud et la corrosion, lubrifis MoS2 - Classification : 1 100 MPa ( temprature ambiante) / 315 C Luft- und Raumfahrt - Stift-Dehnschrauben, mit mittle
10、rer Gewindelnge, aus korrosionsbestndigem und hochwarmfestem Stahl, MoS2-geschmiert - Klasse : 1 100 MPa (bei Raumtemperatur) / 315 C This European Standard was approved by CEN on 6 February 2006. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the condition
11、s 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 Central Secretariat or to any CEN member. This European Standard exists in three offi
12、cial 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 the official versions. CEN members are the national standards bodies of Austria,
13、Belgium, 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 United Kingdom. EUROPEAN COMMITTEE FOR STAND
14、ARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4311:2006: E2 Contents Page Foreword3 1 Scope 4 2
15、Normative references 4 3 Required characteristics.5 4 Designation 8 5 Marking .8 6 Technical specification .8 EN 4311:20063 Foreword This European Standard (EN 4311:2006) has been prepared by the European Association of Aerospace Manufacturers - Standardization (AECMA-STAN). After enquiries and vote
16、s 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,
17、either by publication of an identical text or by endorsement, at the latest by December 2006, and conflicting national standards shall be withdrawn at the latest by December 2006. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CE
18、N 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, Belgium, Cyprus, Czech Republic, De
19、nmark, 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. EN 4311:20064 1 Scope This standard specifies the character
20、istics of studs, coarse tolerance reduced shank, medium length threads, in heat and corrosion resisting steel, MoS2lubricated. Classification: 1 100 MPa 1) / 315 C 2)The shank is reduced for better tension fatigue strength life. 2 Normative references The following referenced documents are indispens
21、able 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 3353-1, Aerospace Lead and runout threads Part 1: Rolled external threads. ISO 5855-2, Aerosp
22、ace MJ threads Part 2: Limit dimensions for bolts and nuts. ISO 7913, Aerospace Bolts and screws, metric Tolerances of form and position. ISO 8168, Aerospace Corrosion- and heat-resisting steel bolts with strength classification 1 100 MPa and MJ threads Procurement specification. EN 2424, Aerospace
23、series Marking of aerospace products. EN 2491, Aerospace series Molybdenum disulphide dry lubricants Coating methods. EN 9100, Aerospace series Quality management systems Requirements (based on ISO 9001:2000) and Quality systems Model for quality assurance in design, development, production, install
24、ation and servicing (based on ISO 9001:1994). TR 3775, Aerospace series Bolts and pins Materials.3)TR 4070, Aerospace series Molybdenum disulphide coatings List of commercial products.3)1) Minimum tensile strength of the material at ambient temperature. 2) Maximum temperature that the stud can withs
25、tand without continuous change in its original characteristics, after return to ambient temperature. The maximum temperature is determined by the coating. 3) Published as AECMA Technical Report at the date of publication of this standard. EN 4311:20065 3 Required characteristics 3.1 Configuration Di
26、mensions Masses See Figure 1 and Tables 1 and 2. Dimensions and tolerances are expressed in millimetres and apply before lubricating. 3.2 Tolerances of form and position See ISO 7913. 3.3 Materials See TR 3775 (heat and corrosion steel, strength class: 1 100 MPa). 3.4 Surface treatment Lubrication:
27、lubricant: see TR 4070; application: EN 2491: 5 m to 10 m. EN 4311:20066 Values in micrometres apply prior to surface treatment. Break sharp edges 0,1 to 0,4. Key 1 Thread 2 Conforms to ISO 3353-1 3 One hole diameter D3(optional) 4 Marking aShape in this area at manufacturers option Figure 1 Table 1
28、 Thread a D1D2b D3L1L3L4Diameter code h12 h12 H13 min. + 0,3 0 050 MJ50,8 4h6h 5 1 7,5 12 L2 2,5 060 MJ61 4h6h 6 4,6 1,4 9 14 L2 3 080 MJ81 4h6h 8 6 1,8 12 18 L2 3,5 100 MJ101,25 4h6h 10 7,5 15 20 L2 4 120 MJ121,25 4h6h 12 9,2 2,3 18 22 L2 4,5 aIn accordance with ISO 5855-2 bFor MJ5 and lengths abov
29、e the bold line of Table 2: D2= D13,2 1,6 EN 4311:20067 Table 2 Diameter code 050 060 080 100 120 Length Mass a Mass aMass aMass aMass aCode L2018 18 3,6 020 20 3,9 5,8 022 22 4,2 6,3 12,3 024 24 4,7 6,9 13,5 23 028 28 5,1 7,6 14,7 25 030 30 5,4 8,1 15,5 26 41 035 35 6,1 9,2 17,4 29 45 040 40 6,9 10
30、,3 19 32 49 045 45 7,7 11,4 20 26 54 050 50 8,4 12,5 21 28 48 055 55 9,2 13,5 22 30 51 060 60 10 14,6 23 31 53 065 65 10,7 15,7 24 33 56 070 70 11,5 16,8 25 35 58 075 75 12,3 17,9 26 37 61 080 80 13,1 19 27 39 63 085 85 20,1 28 40 66 090 90 21,2 29 42 68 095 95 30 44 71 100 100 31 46 73 105 105 32 4
31、8 76 110 110 33 50 79 aApproximate values (kg/1 000 pieces), calculated on the basis of 7,85 kg/dm3, given for information purposes only. They apply to studs without holes. EN 4311:20068 4 Designation EXAMPLE Description block STUD Identity block EN4311D050040F Number of this standard Hole code (see
32、 Table 3) Diameter code (see Table 1) Length code (see Table 2) Lubricant code (see 3.4) NOTE If necessary, the code I9005 shall be placed between the description block and the identity block. Table 3 Hole Code with D without (hyphen) 5 Marking EN 2424, style C plus MJ, indented and Figure 1. 6 Tech
33、nical specification ISO 8168, except for clauses: Approval of manufacturers: see EN 9100; Qualification of studs: not applicable. EN 4311:2006blankBS EN 4311:2006BSI389 Chiswick High RoadLondonW4 4ALBSI British Standards InstitutionBSI is the independent national body responsible for preparing Briti
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