1、BS EN 2811:2016Aerospace series Nuts, hexagon, slotted/castellated in steel cadmium plated Classification: 1 100 MPa/235 CBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 2811:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation o
2、f EN 2811:2016. The UK participation 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 on request to its secretary.This publication does not purport to include all the necess
3、ary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017.Published by BSI Standards Limited 2017ISBN 978 0 580 92882 6 ICS 49.030.30 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard w
4、as published under the authority of the Standards Policy and Strategy Committee on 31 January 2017.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 2811:2016EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2811 December 2016 ICS 49.030.30 English Version Aerospace
5、series - Nuts, hexagon, slotted/ castellated in steel cadmium plated - Classification: 1 100 MPa/235 C Srie arospatiale - crous hexagonaux crneaux en acier cadmi - Classification: 1 100 MPa/235 C Luft- und Raumfahrt - Flache Kronenmuttern aus Stahl, verkadmet - Klasse: 1 100 MPa/235 C This European
6、Standard was approved by CEN on 4 March 2016. 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 bibliographical references concernin
7、g such national standards may be obtained on application to the CEN-CENELEC 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 the responsibility of a CEN member into it
8、s own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germa
9、ny, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR N
10、ORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 2811:2016 EBS EN 2811:2016EN 2811:2016 (E) 2 Contents Page European foreword 3 1 Scope 4 2 Normative refer
11、ences 4 3 Required characteristics 5 3.1 Configuration Dimensions Masses . 5 3.2 Surface roughness . 5 3.3 Materials 5 3.4 Surface treatment . 5 4 Designation . 8 5 Marking . 8 6 Technical specification . 8 BS EN 2811:2016EN 2811:2016 (E) 3 European foreword This document (EN 2811:2016) has been pre
12、pared 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 the member count
13、ries 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 June 2017, and conflicting national standards shall be withdrawn at the latest by June 2017. Attentio
14、n 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 standards organizations of the
15、 following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherla
16、nds, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 2811:2016EN 2811:2016 (E) 4 1 Scope This European Standard specifies the characteristics of steel, cadmium plated hexagonal nuts, with an upper portion slotted or castellated
17、normal height, normal across flats. These nuts are intended for use in aircraft assemblies subjected principally to shear loading. They are intended to be used with threaded parts of 1 100 MPa 1)tensile strength classification and split pins to EN 2367. The cadmium plating restricts the application
18、to temperatures not exceeding 235 C. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the ref
19、erenced document (including any amendments) applies. EN 2133, Aerospace series Cadmium plating of steels with specified tensile strength 1 450 MPa, copper, copper alloys and nickel alloys EN 2205, Aerospace series Steel FE-PL 1502 (25CrMo4) 900 MPa Rm 1 100 MPa Bars De 40 mm EN 2367, Aerospace serie
20、s Split pins in steel EN 2573 EN 2424, Aerospace series Marking of aerospace products EN 2438, Aerospace series Steel FE-PL2102 (35NiCr6) 900 MPa Rm 1 100 MPa Bars De 40 mm EN 2444, Steel FE-PL 711 900 MPa Rm 1 100 MPa Bars and wires De 45 mm Aerospace series 2)EN 2448, Aerospace series Steel FE-PL1
21、503 (35CrMo4) 900 MPa Rm 1 100 MPa Bars De 40 mm EN 9100, Aerospace series Quality Management Systems Requirements for Aviation, Space and Defence Organizations EN 9133, Aerospace series Quality Management Systems Qualification Procedure for Aerospace Standard Products ISO 7313, Aircraft High temper
22、ature convoluted hose assemblies in polytetrafluoroethylene (PTFE) 1)This strength level applies at ambient temperature. 2) Published as ASD-STAN Standard at the date of publication of this standard by AeroSpace and Defence industries Association of Europe - Standardization (ASD-STAN) (www.asd-stan.
23、org) BS EN 2811:2016EN 2811:2016 (E) 5 ISO 4147, Aerospace Nuts, hexagonal, slotted (castellated), normal height, normal across flats, with MJ threads, classifications: 600 MPa (at ambient temperature)/120 degrees C, 600 MPa (at ambient temperature)/235 degrees C, 900 MPa (at ambient temperature)/42
24、5 degrees C, 1 100 MPa (at ambient temperature)/235 degrees C, 1 100 MPa (at ambient temperature)/315 degrees C, 1 100 MPa (at ambient temperature)/650 degrees C, 1 210 MPa (at ambient temperature)/730 degrees C, 1 250 MPa (at ambient temperature)/235 degrees C and 1 550 MPa (at ambient temperature)
25、/600 degrees C Dimensions ISO 5855-1, Aerospace MJ threads Part 1: General requirements ISO 5855-2, Aerospace MJ threads Part 2: Limit dimensions for bolts and nuts ISO 8788, Aerospace Nuts, metric Tolerances of form and position ISO 9139, Aerospace Nuts, plain or slotted (castellated) Procurement s
26、pecification 3 Required characteristics 3.1 Configuration Dimensions Masses Configuration shall be in accordance to the Figure 1 the dimensions 3)and tolerances shall conform to the Figure 1 and Table 1 and are applicable after cadmium plating. Tolerances of form and position are in conformity with
27、ISO 8788. 3.2 Surface roughness See Figure 1. The values apply prior to cadmium plating. They do not apply to the thread where the surface roughness will be as achieved by normal methods of manufacture. 3.3 Materials Steel EN 2205 or EN 2438 or EN 2444 or EN 2448. 3.4 Surface treatment Cadmium plati
28、ng EN 2133, 5 m minimum on the threads on aIl areas which can be contacted by a 20 mm diameter baIl. On aIl other areas, a continuous deposit shall be present but no minimum value is specified. Break sharp edges 0,1 mm to 0,4 mm. 3) Conform to ISO 4147. Ramax 6,3 Ramax 1,6 BS EN 2811:2016EN 2811:201
29、6 (E) 6 Key 1 Tooling marks are permissible in this areas 2 Half section XX: form for diameter code 040, 050 3 Half section XX: form for diameter code 060, 070 4 Dimension G applies to: height below slots (diameter codes 040 to 200) height of flats (diameter codes 060 to 200) bottom of counterbore (
30、diameter codes 040 to 070) 5 Pitch diameter 6 See detail Y 7 Part marking in this zone 8 Form of contour within limiting dimensions at manufacturers option 9 Thread 10 This dimension also applies to the upper chamfer. All forms of entry (chamfer or radius) optional within these limiting dimensions 1
31、1 Diameter M may be tangential to, but shall not intrude on the flats 12 Bearing surface may be flat to concave, but shall not be convex 13 Three (3) places 14 Six (6) slots 15 Half section XX: form for diameter code 080, 200 16 Detail Y: Form (radius or chamfer) at bottom of slot at manufacturers o
32、ption Figure 1 BS EN 2811:2016EN 2811:2016 (E) 7 Table 1 Dimensions and mass Dimensions in millimetres Diameter code Thread a E F G H J K min. Nom. Tol. 0,25 0,25 0,25 H15 040 MJ 4 x 0,7 4H6H 7,6 7 h12 3,0 5 4 050 MJ 5 x 0,8 4H6H 8,7 8 3,75 6,2 5 060 MJ 6 x 1 4H5H 10,9 10 h13 4,5 6,9 9 6 070 MJ 7 x
33、1 4H5H 12,0 11 5,25 8,1 10 7 080 MJ 8 x 1 4H5H 14,3 13 6,0 8,8 11 100 MJ10 x 1,25 4H5H 18,9 17 7,5 11,1 13 120 MJ12 x 1,25 4H5H 21,1 19 9,0 12,6 16 140 MJ14 x 1,5 4H5H 24,5 22 10,5 14,9 18 160 MJ16 x 1,5 4H5H 26,8 24 12,0 16,4 22 180 MJ18 x 1,5 4H5H 30,2 27 13,5 18,7 25 200 MJ20 x 1,5 4H5H 33,6 30 1
34、5,0 20,2 28 a In conformity with ISO 5855 - Parts 1 and 2.L M N P Q S T Mass kg/ 1 000 pieces max. max. diameter of split pin. Reference max. min. min. 0 0,3 H14 4,8 4,2 6,4 0,5 0,10 0,2 1,3 0,3 1,3 1,0 5,8 5,2 7,4 0,5 0,10 0,2 1,7 1,8 1,4 7,1 6,3 9,3 0,5 0,10 0,2 1,7 2,8 1,4 8,1 7,3 10,2 0,5 0,10 0
35、,2 2,1 0,36 3,8 1,8 9,1 8,3 12,2 0,5 0,10 0,2 2,1 5,6 1,8 11,1 10,3 16,0 0,6 0,13 0,25 2,6 11,5 2,3 13,1 12,3 18,0 0,6 0,13 0,25 2,6 0,43 16 2,3 15,2 14,4 21,0 0,6 0,15 0,25 3,2 24,5 2,9 17,2 16,4 23,0 0,6 0,18 0,3 3,2 33,5 2,9 19,2 18,4 26,0 0,6 0,18 0,3 4,0 48,5 3,7 21,2 20,4 29,0 0,6 0,18 0,3 4,0
36、 0,52 66 3,7 BS EN 2811:2016EN 2811:2016 (E) 8 4 Designation EXAMPLE Description block NUT, SLOTTED Identity block EN2811-080 Number of this standard Diameter code (see Table 1) NOTE If necessary, the code I9005 shall be placed between the description block and the identity block. 5 Marking Each nut
37、 shall be marked in any of the positions shown in the figure in accordance with the marking styles given in Table 2 and defined by EN 2424. Table 2 Marking styles Diameter code Marking styles 040 F 050 to 080 E 100 and 120 D 140 and 160 C 180 and 200 A 6 Technical specification ISO 9139 except for:
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