1、BS EN 3227:2010ICS 49.030.30NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDAerospace series Nuts, hexagonal, plain, normal height, normal across flats, in steel, cadmium plated, left hand thread Classification: 1 100 MPa (at ambient temperature) / 235 CThis Bri
2、tish Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 31 March2010 BSI 2010ISBN 978 0 580 70737 7Amendments/corrigenda issued since publicationDate CommentsBS EN 3227:2010National forewordThis British Standard is the UK implementation of EN 3227:2010.The UK pa
3、rticipation in its preparation was entrusted to TechnicalCommittee ACE/12, Aerospace fasteners and fastening systems.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract
4、. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.BS EN 3227:2010EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3227 February 2010 ICS 49.030.30 English Version Aerospace series - Nuts, hexagonal, plain, normal h
5、eight, normal across flats, in steel, cadmium plated, left hand thread - Classification: 1 100 MPa (at ambient temperature) / 235 C Srie arospatiale - crous hexagonaux ordinaires, hauteur normale, surplats normaux, en acier, cadmis, filetage gauche - Classification : 1 100 MPa ( temprature ambiante)
6、 / 235 C Luft- und Raumfahrt - Sechskantmuttern mit normaler Schlsselweite, aus Stahl, verkadmet, Linksgewinde - Klasse: 1 100 MPa (bei Raumtemperatur) / 235 C This European Standard was approved by CEN on 11 December 2009. CEN members are bound to comply with the CEN/CENELEC Internal Regulations wh
7、ich 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 Management Centre or to any CEN member. This European
8、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 as the official versions. CEN members are the nationa
9、l standards bodies of Austria, Belgium, Bulgaria, Croatia, 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, Switzerlan
10、d and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 32
11、27:2010: EBS EN 3227:2010EN 3227:2010 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Required characteristics .54 Designation 75 Marking .86 Technical specification .8BS EN 3227:2010EN 3227:2010 (E) 3 Foreword This document (EN 3227:2010) has been prepared by the Aerospace and Defe
12、nce 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 the member countries of ASD, prior to its prese
13、ntation 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 August 2010, and conflicting national standards shall be withdrawn at the latest by August 2010. Attention is drawn to the possibili
14、ty 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 standards organizations of the following countries are bo
15、und to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, 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,
16、 Sweden, Switzerland and the United Kingdom. BS EN 3227:2010EN 3227:2010 (E) 4 1 Scope This standard specifies the characteristics of plain, hexagonal nuts, normal height, normal across flats, with left hand thread, in steel, cadmium plated. Classification : 1 100 MPa 1) / 235 C 2).2 Normative refer
17、ences 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. EN 2133, Aerospace series Cadmium plating o
18、f steels with specified tensile strength 1 450 MPa, copper, copper alloys and nickel alloys EN 2205, Aerospace series Steel FE-PL1502 (25CrMo4) 900 MPa Rm 1 100 MPa Bars De 40 mm EN 2424, Aerospace series Marking of aerospace products EN 2438, Aerospace series Steel FE-PL2102 (35NiCr6) 900 MPa Rm 1
19、100 MPa Bars De 40 mmEN 2448, Aerospace series Steel FE-PL1503 (35CrMo4) 900 MPa Rm 1 100 MPa Bars De 40 mmEN 3513, Aerospace series Steel FE-PL711 Hardened and tempered 900 MPa Rm 1 100 MPa Bar and wire De 45 mm 3)EN 9100, Quality Management Systems Requirements for Aviation, Space and Defense Orga
20、nizationsISO 5855-2, Aerospace MJ threads Part 2: Limit dimensions for bolts and nuts ISO 8279, Aerospace Nuts, hexagonal, plain, normal height, normal across flats, with MJ threads, classifications: 600 MPa (at ambient temperature)/120 C, 600 MPa (at ambient temperature)/235 C, 900 MPa (at ambient
21、temperature)/425 C, 1 100 MPa (at ambient temperature)/235 C, 1 100 MPa (at ambient temperature)/315 C, 1 100 MPa (at ambient temperature)/650 C, 1 210 MPa (at ambient temperature)/730 C, 1 250 MPa (at ambient temperature)/235 C and 1 550 MPa (at ambient temperature)/600 C Dimensions ISO 8788, Aeros
22、pace Nuts, metric Tolerances of form and position ISO 9139, Aerospace Nuts, plain or slotted (castellated) Procurement specification TR 3823, Aerospace series Materials for plain and slotted hexagonal nuts 4) 1) Corresponds to strength class of the associated bolt, the 100 % load of which it is able
23、 to withstand, when tested at ambient temperature, without breaking or cracking. 2) Maximum temperature that the nut is able to whithstand, without permanent alteration to its original characteristics, after ambient temperature has been restored. The maximum temperature is conditioned by the surface
24、 treatment. 3) Published as ASD-STAN Prestandard at the date of publication of this standard. 4) Published as ASD-STAN Technical Report at the date of publication of this standard. BS EN 3227:2010EN 3227:2010 (E) 5 3 Required characteristics 3.1 Configuration Dimensions Masses See Figure 1 and Table
25、 1. Dimensions and tolerances are in conformity with ISO 8279, expressed in millimetres and apply after surface treatment. 3.2 Materials EN 2205, EN 2438, EN 3513, EN 2448 or TR 3823. 3.3 Surface treatment EN 2133, 5 m minimum on threads and all surfaces which can be contacted by a 20 mm diameter ba
26、ll. On all other surfaces, a continuous cadmium plating shall be present. BS EN 3227:2010EN 3227:2010 (E) 6 These values in micrometres apply before surface treatment. The values do not apply to threads the surface texture of which will be achieved by usual manufacturingmethods. Break sharp edges 0,
27、1 to 0,4. Details of form not stated are at the manufacturers option. Key 1 Thread 2 Two holes U optional 3 Marking 4 r = 0,2 to 0,5 5 The groove bottom shall not extend completely across the flats 6 Marking for left hand thread aFrom either face bDiameter M may be tangential to, but shall not intru
28、de on the flats. cApplicable to both faces dAll forms of entry (chamfer or radius) option within these limiting dimensions. Tolerances of form and position shall be in conformity with ISO 8788. Figure 1 36,3 1,6 4 5 6 BS EN 3227:2010EN 3227:2010 (E) 7 Table 1 Diameter code Left hand thread a E F H L
29、 M N U V W Mass kg/1 000 pieces approx. min. h14 min. max. min. H13 0,2 min. 020 MJ20,4-4H6H-LH 4,2 4 h12 1,6 2,2 + 0,60 3,4 0,4 0,2 b bb0,15 025 MJ2,50,45-4H6H-LH 5,3 5 2 2,7 4,4 0,3 030 MJ30,5-4H6H-LH 6,5 6 2,4 3,2 5,4 0,5 040 MJ40,7-4H6H-LH 7,6 7 3,2 4,2 6,4 0,5 0,85 050 MJ50,8-4H6H-LH 8,7 8 4 5,
30、2 7,4 1,3 060 MJ61-4H5H-LH 10,9 10 h13 4,8 6,3 + 0,80 9,3 1 3,9 2 2,4 070 MJ71-4H5H-LH 12 11 5,6 7,3 10,2 4,4 2,4 3,2 080 MJ81-4H5H-LH 14,3 13 6,4 8,3 12,2 5 2,8 5,2 100 MJ101,25-4H5H-LH 18,9 17 8 10,3 16 0,6 0,3 1,5 6,9 3,6 11,5 120 MJ121,25-4H5H-LH 21,1 19 9,6 12,3 18 8 4,4 16,1 140 MJ141,5-4H5H-L
31、H 24,5 22 11,2 14,4 21 9,6 5,1 25 160 MJ161,5-4H5H-LH 26,8 24 12,8 16,4 23 10,7 5,9 33 180 MJ181,5-4H5H-LH 30,2 27 14,4 18,4 26 12 6,7 46 200 MJ201,5-4H5H-LH 33,6 30 16 20,4 29 13,4 7,5 62 220 MJ221,5-4H5H-LH 35,8 32 17,6 22,4 30,9 14,4 8,3 75 240 MJ242-4H5H-LH 40,4 36 19,2 24,5 34,9 16,1 9,1 108 aI
32、n accordance with ISO 5855-2. bLockwire holes not provided for these diameters. 4 Designation EXAMPLE Description block NUT Identity block EN3227H060 Number of this standard Holes code (see Table 2) Diameter code (see Table 1) NOTE If necessary the originator code I9005 shall be placed between the d
33、escription block and the identity block. BS EN 3227:2010EN 3227:2010 (E) 8 Table 2 Option Code Lockwire holes H No hole (hyphen) 5 Marking See Table 3. Table 3 Diameter code EN 2424 Style 020 to 030 F 040 to 070 N 080 to 160 C 180 to 240 A 6 Technical specification ISO 9139, except for approval of m
34、anufacturers: see EN 9100. BS EN 3227:2010This page has been intentionally left blankBS EN3227:2010BSI GroupHeadquarters 389Chiswick High Road,London, W4 4AL, UKTel +44 (0)20 8996 9001Fax +44 (0)20 8996 - British Standards InstitutionBSI is the independent national body responsible for preparing Br
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