1、BRITISH STANDARD AEROSPACE SERIESBS EN 3444:2006Bolt, large bihexagonal head, close tolerance normal shank, medium length thread, in heat resisting nickel base alloy, passivated Classification: 1 250 MPa (at ambient temperature)/650 CThe European Standard EN 3444:2006 has the status of a British Sta
2、ndardICS 49.030.30g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 3444:2006This British Standard was published under the authority of the Stan
3、dards Policy and Strategy Committee on 31 August 2006 BSI 2006ISBN 0 580 49173 0National forewordThis British Standard is the official English language version of EN 3444:2006. The UK participation in its preparation was entrusted to Technical Committee ACE/12, Aerospace fasteners and fastening syst
4、ems, which has 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
5、 section entitled “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 applicatio
6、n.Compliance 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 rela
7、ted international 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 docume
8、nt was last issued.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3444 July 2006 ICS 49.030.30 English Version Aerospace series - Bolt, large bihexagonal head, close tolerance normal shank, medium length thread, in heat resisting nickel
9、base alloy, passivated - Classification: 1 250 MPa (at ambient temperature) /650 C Srie arospatiale - Vis tte bihexagonale large, tige normale tolrance serre, filetage moyen, en alliage rsistant chaud base de nickel, passives - Classification: 1 250MPa ( temprature ambiante) / 650 CLuft- und Raumfah
10、rt - Zwlfkant-Passschrauben, mittlere Gewindelnge, aus hochwarmfester Nickelbasislegierung, passiviert, - Klasse: 1 250 MPa (bei Raumtemperatur)/650 C This European Standard was approved by CEN on 9 March 2006. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate
11、 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 Central Secretariat or to any CEN member. This European Standard exists
12、 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 Central Secretariat has the same status as the official versions. CEN members are the national standards bodie
13、s of Austria, 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 COMMI
14、TTEE FOR STANDARDIZATION 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 3444:2006: E2 Contents Page Foreword
15、3 1 Scope 4 2 Normative references 4 3 Required characteristics.5 4 Designation 8 5 Marking .8 6 Technical specification .8 7 Oversized bolts 8 EN 3444:20063 Foreword This European Standard (EN 3444:2006) has been prepared by the AeroSpace and Defense Industries Asso-ciation of Europe - Standardizat
16、ion (ASD-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has re-ceived 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 gi
17、ven the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2007, and conflicting national standards shall be withdrawn at the latest by January 2007. Attention is drawn to the possibility that some of the elements of this document ma
18、y 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 standards organizations of the following countries are bound to implement this European Standard: Austria
19、, Belgium, Cyprus, Czech Republic, Den-mark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxem-bourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzer-land and the United Kingdom. EN 3444:20064 1 Sco
20、pe This standard specifies the characteristics of bolts, large bihexagonal head, close tolerance normal shank, medium length thread, in heat resisting nickel base alloy, passivated. Classification: 1 250 MPa1)/ 650 C2). 2 Normative references The following referenced documents are indispensable for
21、the application of this document. For dated refer-ences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2424, Aerospace series Marking of aerospace products EN 2516, Aerospace series Passivation of corrosio
22、n resistant steels and decontamination of nickel base alloys EN 3769, Aerospace series Electrolytic polishing of corrosion resistant steels and heat resisting alloys EN 4016, Aerospace series Oversized bolts3)EN 9100, Aerospace series - Quality management systems - Requirements (based on ISO 9001:20
23、00) and Quality systems - Model for quality assurance in design, development, production, installation and servicing (based on ISO 9001:1994) EN 9133, Aerospace series Quality management systems Qualification procedure for aerospace stan-dard parts ISO 3186, Aerospace Bolts, large bihexagonal head,
24、normal shank, short or medium length MJ threads, metallic material, coated or uncoated, strength classes 1 250 MPa to 1 800 MPa Dimensions ISO 3353-1, Aerospace Lead and runout threads Part 1: Rolled external threads ISO 4095, Aerospace Bihexagonal drives Wrenching configuration Metric series ISO 58
25、55-2, Aerospace MJ threads Part 2: Limit dimensions for bolts and nuts ISO 7913, Aerospace Bolts and screws, metric Tolerances of form and position ISO 9154, Aerospace Bolts, with MJ threads, made of heat-resistant nickel-based alloy, strength class 1 550 MPa Procurement specification TR 3775, Aeros
26、pace series Bolts and pins National materials4)1) Corresponds to the minimum tensile stress which the nut is able to withstand at ambient temperature without breaking or cracking when tested with a bolt of a higher strength class. 2) Maximum temperature that the nut is able to withstand, without per
27、manent alteration to its original characteristics, after ambient temperature has been restored. The maximum temperature is conditioned by the cadmium plating. 3) In preparation at the date of publication of this standard. 4) Published ASD Technical Report at the date of publication of this standard.
28、 EN 3444:20065 3 Required characteristics 3.1 Configuration Dimensions Masses See Figure 1 and Table 1. Dimensions and tolerances are: in conformity with ISO 3186, expressed in millimetres and apply after surface treatment. 3.2 Tolerances of form and position See ISO 7913. 3.3 Materials See TR 3775
29、(heat resisting nickel base alloy, strength class 1 250 MPa). 3.4 Surface treatments See EN 2516 or EN 3769 on the head (except bearing face), then EN 2516 on all the bolt. In this case, code P shall be used in the designation. EN 3444:20066 Values in micrometres apply prior to surface treatment.Rem
30、ove sharp edges 0,1 to 0,4 Key 1 Radius 0,3 min. 2 1 hole D8(optional) 3 Thread 4 Conforms to ISO 3353 5 Marking 6 4 holes D9equidistant (optional) aShape in area at manufacturers option. Figure 1 EN 3444:2006Table 1 D1D2D3D4D5D6D7D8HKL1b, cL2L3PRSTMasse0,2Diameter code Threadaf7 1 0+ 0,5min.min.max
31、.H13H13min.h15 Code nom. 02,04,00+min.Wrenchingdash numberdf g 050 MJ5x0,8-4h6h 5 2,5 3,46,89,510,31,5 7,4003 to 050 3 to 50 12,57,55,33,32,8 07 5,18 0,16 060 MJ6x1-4h6h 6 3,2 4,27,811 11,81 1,5 1,7 8,4003 to 060 3 to 60 15 8,56,10,8 3,83,5 08 7,92 0,23 070 MJ7x1-4h6h 7 3,9 5,28,812,513,31,9 9,2004
32、to 070 4 to 70 16 9,56,74,23,8 09 12,40 0,32 080 MJ8x1-4h6h 8 4,5 6,29,814 14,81,9 2,1 9,8004 to 080 4 to 80 17 10,57,21 4,63,9 10 15,85 0,42 100 MJ10x1,25-4h6h10 6,1 7,911,817,318,32,5 11,6005 to 100 5 to 100 21 13 8,51,2 5,54,2 12 29,07 0,64 120 MJ12x1,25-4h6h12 7,7 9,813,720,922 2,4 2,9 12,9006 t
33、o 120 6 to 120 23,514,59,66,44,5 14 46,85 0,92 140 MJ14x1,5-4h6h 14 10,3 11,516,723,925 1,4 3,3 14,3007 to 140 7 to 140 27,517 10,87,15,1 17 70,36 1,16 160 MJ16x1,5-4h6h 16 11,9 13,518,627,428,53,7 15,8008 to 160 8 to 160 30 18,512,48,45,3 19 103,45 1,65 180 MJ18x1,5-4h6h 18 14,5 15,521,630,431,53 4
34、,1 17,1009 to 180 9 to 180 33 21 13,91,4 9,46,1 22 143,20 2,10 200 MJ20x1,5-4h6h 20 16 17,523,633,434,54,5 18,6010 to 200 10 to 200 35,522,515,310,56,6 24 190,60 2,60 220 MJ22x1,5-4h6h 22 18,6 19,526,636,437,54,9 19,9011 to 220 11 to 220 38 24 16,811,67,4 27 274,00 3,10 240 MJ24x2-4h6h 24 21,2 20,92
35、9,639,440,51,6 3,8 5,3 21,9012 to 240 12 to 240 43,526,518,31,8 12,78,2 30 365,90 3,70 aIn accordance with ISO 5855-2, except the thread major diameter “dmax.“which shall be equal to D1min. 0,025. bIncrements: 1 for L130 2 for 30 L1100 4 for L1100 cIf greater lengths arerequired, these shall be chos
36、en using the above increments. The lengthcode corresponds tothe length L1, completed byoneor twozeros to the left, whereneces-sary, to obtain a three digit code. dIn accordance with ISO 4095 overTmin. eApproximate values (kg/1 000 pieces), calculated on the basis of 8,25 kg/dm3, given for informatio
37、n purposes only. Theyapply to bolts without holes. fValue for head and first L4.gIncrease for eachadditional millimetre of L4. 7 EN 3444:20068 4 Designation EXAMPLE Description block Identity block BOLT EN3444 H 050 040 P Number of this standard Hole code (see Table 2) Diameter code (see Table 1) Le
38、ngth code (see Table 1) Polishing code (see 3.4) NOTE If necessary, the code I9005 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 EN 2424, style C plus MJ, indented (see Figure 1).
39、 6 Technical specification See ISO 9154, with the following modifications. 6.1 Approval of manufacturers See EN 9100. 6.2 Qualification of bolts See EN 9133. 6.3 Other modified requirement Minimum tensile strength test loads: apply the coefficient 0,806. 7 Oversized bolts See EN 4016. EN 3444:2006bl
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