1、BRITISH STANDARD AEROSPACE SERIES BS EN 3725:2004 Screws, pan head, six lobe recess, normal shank, long thread, in titanium alloy TI-P64001, anodized, MoS 2coated Strength class: 1 100 MPa (at ambient temperature) The European Standard EN 3725:2004 has the status of a British Standard ICS 49.030.20
2、BS EN 3725:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 5 January 2005 BSI 5 January 2005 ISBN 0 580 45188 7 National foreword This British Standard is the official English language version of EN 3725:2004. It supersedes BS EN 3725:20
3、03 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee ACE/12, Aerospace fasteners and fastening systems, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references
4、The British Standards which implement international or European publications referred to in this document may be 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 Stand
5、ards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the
6、responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside fron
7、t cover, the EN title page, pages 2 to 9 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3725 November 2004 ICS 49.030.20
8、 Supersedes EN 3725:2003 English version Aerospace series - Screws, pan head, six lobe recess, normal shank, long thread, in titanium alloy TI-P64001, anodized, MoS2 coated - Strength class: 1 100 MPa (at ambient temperature) Srie arospatiale - Vis tte cylindrique, empreinte six lobes, ft normal, fi
9、letage long, en alliage de titane TI- P64001, anodises, revtues MoS2 - Classe de rsistance : 1 100 MPa ( temprature ambiante) Luft- und Raumfahrt - Zylinderschrauben, Sechs- Bogenzahn, langes Gewinde, aus Titanlegierung TI- P64001, anodisiert, MoS2 beschichtet - Festigkeitsklasse: 1 100 MPa (bei Rau
10、mtemperatur) This European Standard was approved by CEN on 11 September 2003. 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 bibl
11、iographical 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 official versions (English, French, German). A version in any other language made by translation under the responsibility o
12、f 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, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
13、Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels
14、2004 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3725:2004: E EN 3725:2004 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Required characteristics.4 4 Designation 9 5 Marking .9 6 Technical specifications .9
15、 EN 3725:2004 (E) 3 Foreword This document (EN 3725:2004) has been prepared by the European Association of Aerospace Manufacturers - Standardization (AECMA-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the Na
16、tional 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, either by publication of an identical text or by endorsement, at the latest by May 2005, and conflicting national
17、 standards shall be withdrawn at the latest by May 2005. This document supersedes EN 3725:2003. 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,
18、Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 3725:2004 (E) 4 1 Scope This standard specifies the characteristics
19、 of pan head screws with six lobe recess, threaded to head, in TI-P64001, anodized, MoS 2coated, for aerospace applications. Strength class: 1 100 MPa 1)NOTE Taking account of the recess geometry, the strength class to be used for the seating torque calculation shall not be greater than 900 MPa. 2 N
20、ormative 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 3353-1, Aerospace Lead an
21、d runout threads Part 1: Rolled external threads ISO 5855-2, Aerospace MJ threads Part 2: Limit dimensions for bolts and nuts EN 2424, Aerospace series Marking of aerospace products EN 2491, Aerospace series Molybdenum disulphide dry lubricants Coating methods EN 3813, Aerospace series Titanium allo
22、y TI-P64001 Annealed Bar and wire for forged fasteners D e 25 mm 2)EN 3818, Aerospace series Bolts, MJ threads, in titanium alloy TI-P64001 Strength class: 1 100 MPa (at ambient temperature) Technical specification EN 3905, Aerospace series Six lobe recesses for bolts Technical specification 2)EN 39
23、11, Aerospace series Six lobe recess Geometrical definition 3 Required characteristics 3.1 Configuration Dimensions Tolerances Masses See Figure 1 and Tables 1 and 2. Dimensions and tolerances are in millimetres. They apply after anodizing but before MoS 2coating. 3.2 Materials EN 3813 3.3 Surface t
24、reatment EN 2491 1) Minimum tensile strength of the material at ambient temperature 2) Published as AECMA Prestandard at the date of publication of this standard EN 3725:2004 (E) 5 Key 1 rolled 2 values apply before MoS 2 coating 3 remove sharp edges 0,1 to 0,4 4 pitch diameter 5 thread 6 six lobe r
25、ecess to EN 3911 7 marking 8 conforms to ISO 3353-1 9 shape in this area at manufacturers option aWhen the length of the shank is less than one times the nominal value of the shank diameter D, the run-out is measured at a distance equal to half the actual shank length. bFor bolts having a shank leng
26、th less than one times the nominal value of the shank diameter D, and for those threaded to head, the pitch diameter axis shall be used as the datum. Figure 1 EN 3725:2004 (E) 6 Table 1 Thread aD E F G H K Q R X Y Z Recess Code Designation h12 max. min. min. + 0,2 0 h15 0,5 max.min. 030 MJ30,5-4h6h
27、3 5,5 5,1 0,3 1,152,2 2,3 0,11 EN3911-10 040 MJ40,7-4h6h 4 7 6,6 1,3 3 3,1 0,4 0,2 0,14 EN3911-25 050 MJ50,8-4h6h 5 8,5 8,1 0,7 1,8 4 3,5 0,5 0,3 0,18 EN3911-27 060 MJ61-4h6h 6 10 9,5 2,25 4,7 4,2 0,12 0,21 EN3911-30 070 MJ71-4h6h 7 12 11,4 1 2,5 5,4 5,2 0,25 EN3911-40 080 MJ81-4h6h 8 13 12,4 1,5 2,
28、7 6 6,2 0,7 0,5 0,003 0,15 0,28 EN3911-45 aIn accordance with ISO 5855-2 EN 3725:2004 (E) 7 Table 2 Thread code 030 040 050 060 070 080 N W Mass aW Mass a W Mass a W Mass a W Mass a W Mass aLength code 0,3 max. min. max. min. max. min. max. min. max. min. max. min. 004 4 0,40 0,80 006 6 0,45 0,88 00
29、8 8 0,50 0,98 1,59 010 10 0,55 1,06 1,73 2,92 4,64 6,16 012 12 0,60 1,15 1,87 3,12 4,92 6,54 014 14 1,4 1,15 0,65 1,24 2,01 3,32 5,20 6,92 016 16 4 2,5 0,70 1,8 1,45 1,33 2,15 3,53 5,49 7,29 018 18 6 4,5 0,75 4 2,5 1,42 2,1 1,7 2,29 3,73 5,77 7,67 020 20 8 6,5 0,80 6 4,5 1,51 4 2,5 2,43 2,7 2,2 3,93
30、 6,04 8,05 022 22 10 8,5 0,85 8 6,5 1,60 6 4,5 2,57 4 2,5 4,13 2,7 2,2 6,33 8,43 024 24 12 10,5 0,90 10 8,5 1,69 8 6,5 2,71 6 4,5 4,33 4 2,5 6,61 2,7 2,2 8,81 026 26 14 12,5 0,95 12 10,5 1,78 10 8,5 2,85 8 6,5 4,53 6 4,5 6,90 4 2,5 9,19 028 28 16 14,5 1,00 14 12,5 1,87 12 10,5 2,99 10 8,5 4,73 8 6,5
31、 7,18 6 4,5 9,57 030 30 18 16,5 1,05 16 14,5 1,96 14 12,5 3,13 12 10,5 4,93 10 8,5 7,46 8 6,5 9,94 032 32 20 18,5 1,10 18 16,5 2,05 16 14,5 3,27 14 12,5 5,13 12 10,5 7,75 10 8,5 10,32 034 34 22 20,5 1,15 20 18,5 2,14 18 16,5 3,42 16 14,5 5,33 14 12,5 8,03 12 10,5 10,70 036 36 24 22,5 1,20 22 20,5 2,
32、23 20 18,5 3,56 18 16,5 5,53 16 14,5 8,31 14 12,5 11,08 038 38 26 24,5 1,25 24 22,5 2,32 22 20,5 3,70 20 18,5 5,73 18 16,5 8,59 16 14,5 11,46 040 40 28 26,5 1,30 26 24,5 2,41 24 22,5 3,84 22 20,5 5,93 20 18,5 8,88 18 16,5 11,83 042 42 30 28,5 1,35 28 26,5 2,50 26 24,5 3,98 24 22,5 6,13 22 20,5 9,16
33、20 18,5 12,21 044 44 30 28,5 2,59 28 26,5 4,12 26 24,5 6,33 24 22,5 9,44 22 20,5 12,59 046 46 32 30,5 2,68 30 28,5 4,26 28 26,5 6,53 26 24,5 9,73 24 22,5 12,97 048 48 34 32,5 2,77 32 30,5 4,40 30 28,5 6,73 28 26,5 10,01 26 24,5 13,35 050 50 36 34,5 2,86 34 32,5 4,54 32 30,5 6,94 30 28,5 10,29 28 26,
34、5 13,72 052 52 38 36,5 2,95 36 34,5 4,68 34 32,5 7,14 32 30,5 10,58 30 28,5 14,10 054 54 40 38,5 3,04 38 36,5 4,82 36 34,5 7,34 34 32,5 10,86 32 30,5 14,48 056 56 42 40,5 3,13 40 38,5 4,96 38 36,5 7,54 36 34,5 11,14 34 32,5 14,86 058 58 42 40,5 5,10 40 38,5 7,74 38 36,5 11,42 36 34,5 15,24 060 60 44
35、 42,5 5,24 42 40,5 7,94 40 38,5 11,71 38 36,5 15,61 062 62 46 44,5 5,38 44 42,5 8,14 42 40,5 11,99 40 38,5 15,99 064 64 48 46,5 5,52 46 44,5 8,34 44 42,5 12,27 42 40,5 16,38 066 66 50 48,5 5,66 48 46,5 8,54 46 44,5 12,56 44 42,5 16,75 068 68 52 50,5 5,80 50 48,5 8,74 48 46,5 12,84 46 44,5 17,13 cont
36、inued EN 3725:2004 (E) 8 Table 2 (concluded) Thread code 030 040 050 060 070 080 N W Mass aW Mass a W Mass a W Mass a W Mass a W Mass aLength code 0,3 max. min. max. min. max. min. max. min. max. min. max. min. 070 70 54 52,5 5,96 52 50,5 8,94 50 48,5 13,12 48 46,5 17,51 072 72 54 52,5 9,15 52 50,5
37、13,40 50 48,5 17,89 074 74 56 54,5 9,35 54 52,5 13,68 52 50,5 18,27 076 76 58 56,5 9,55 56 54,5 13,97 54 52,5 18,64 078 78 60 58,5 9,75 58 56,5 14,25 56 54,5 19,02 080 80 62 60,5 9,95 60 58,5 14,53 58 56,5 19,40 082 82 64 62,5 10,15 62 60,5 14,82 60 58,5 19,78 084 84 66 64,5 10,35 64 62,5 15,10 62 6
38、0,5 20,16 086 86 66 64,5 15,38 64 62,5 20,54 088 88 68 66,5 15,66 66 64,5 20,91 090 90 70 68,5 15,95 68 66,5 21,29 092 92 72 70,5 16,23 70 68,5 21,67 094 94 74 72,5 16,51 72 70,5 22,05 096 96 76 74,5 16,80 74 72,5 22,42 098 98 78 76,5 17,08 76 74,5 22,80 100 100 - 78 76,5 23,18 104 104 - 82 80,5 23,
39、94 108 108 86 84,5 24,69 112 112 90 88,5 25,45 aMass quoted in kg/1 000 parts EN 3725:2004 (E) 9 4 Designation EXAMPLE Description block SCREW Identity block EN3725-080060 Number of this standard Thread code (see Table 1) Length code (see Table 2) NOTE If necessary, the code I9005 shall be placed be
40、tween the description block and the identity block. 5 Marking EN 2424, indicated on Figure 1 and Table 3. Table 3 Thread code Style 030 to 050 C 060 to 080 A 6 Technical specifications EN 3818 and EN 3905 BS EN 3725:2004 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI
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