1、BS EN 4297:2017Aerospace series Nuts,hexagon, self-locking byplastic ring, normal height,normal across flats, in corrosionresisting steel, passivated Classification: 900 MPa (atambient temperature) / 120 CBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 4297:201
2、7 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 4297:2017. 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 r
3、equest to its secretary.This publication does not purport to include all the necessary 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 92612 9 ICS 49.030.30 Compliance with a Bri
4、tish Standard cannot confer immunity from legal obligations.This British Standard was 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 4297:2017EUROPEAN STANDARD NORME EUROP
5、ENNE EUROPISCHE NORM EN 4297 January 2017 ICS 49.030.30 English Version Aerospace series - Nuts, hexagon, self-locking by plastic ring, normal height, normal across flats, in corrosion resisting steel, passivated - Classification: 900 MPa (at ambient temperature) / 120 C Srie arospatiale - crous hex
6、agonaux, freinage interne par bague plastique, hauteur normale, surplats normaux, en acier rsistant la corrosion, passivs - Classification: 900 MPa ( temprature ambiante) / 120 C Luft- und Raumfahrt - Sechskantmuttern, selbstsichernd mit Plastikring, mit normaler Schlsselweite, aus korrosionsbestndi
7、gem Stahl, passiviert - Klasse: 900 MPa (bei Raumtemperatur) / 120 C This European Standard was approved by CEN on 11 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 standa
8、rd without any alteration. Up-to-date lists and bibliographical references concerning 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
9、 other language made by translation under the responsibility of a CEN member into its 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 Repub
10、lic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. E
11、UROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4297:2017 EBS
12、 EN 4297:2017EN 4297:2017 (E) 2 Contents Page European foreword . 3 1 Scope 4 2 Normative references 4 3 Required characteristics 4 4 Designation 6 5 Marking . 7 6 Technical specification 7 BS EN 4297:2017EN 4297:2017 (E) 3 European foreword This document (EN 4297:2017) has been prepared by the Aero
13、space and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this European Standard has received the approval of the National Associations and the Official Services of the member countries of
14、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 July 2017, and conflicting national standards shall be withdrawn at the latest by July 2017. Attention is dra
15、wn 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 followi
16、ng 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, Netherlands, Nor
17、way, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 4297:2017EN 4297:2017 (E) 4 1 Scope This European Standard specifies the characteristics of hexagonal nuts, self-locking by plastic ring, normal height, normal across flats, i
18、n corrosion resisting steel, passivated. Classification: 900 MPa 1)/ 120 C 2). 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
19、 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 corrosion resisting steels and decontamination of nickel base alloys EN 9100, Quality Management Systems - R
20、equirements for Aviation, Space and Defense Organizations EN 9133, Aerospace series - Quality management systems - Qualification procedure for aerospace standard parts ISO 5855-2, Aerospace MJ threads Part 2: Limit dimensions for bolts and nuts ISO 5858, Aerospace Nuts, self-locking, with maximum op
21、erating temperature less than or equal to 425 degrees C Procurement specification ISO 8788, Aerospace Nuts, metric Tolerances of form and position 3 Required characteristics 3.1 Configuration Dimensions Masses See Figure 1 and Table 1. Dimensions and tolerances are expressed in millimetres and apply
22、 after surface treatment. Details of form not stated are at the manufacturers option. 3.2 Tolerances of form and position ISO 8788. 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
23、strength class. 2) Maximum temperature that the nut is able to withstand, without permanent alteration to its original characteristics, after ambient temperature has been restored. The maximum temperature is conditioned by the plastic ring. BS EN 4297:2017EN 4297:2017 (E) 5 3.3 Materials Threaded el
24、ement: FE-PA1801. Plastic ring: polyamide 6.6. 3.4 Surface treatment EN 2516, process class appropriate to the material These values in micrometres apply before surface treatment. They do not apply to threads the surface texture of which will be as achieved by usual manufacturing methods. Remove sha
25、rp edges 0,1 to 0,4 Key 1 90 to 120 a2 Thread 3 Threaded element 4 Plastic ring 5 Marking a All forms of entry (chamfer or radius) option within these limiting dimensions. bForm of contour within these limiting dimensions is at the manufacturers option. Diameter M may be tangential to, but shall not
26、 intrude on the flats. Figure 1 Ramax 6,3 Ramax 1,6 BS EN 4297:2017EN 4297:2017 (E) 6 Table 1 Diameter code Thread a E F H L M N P T Mass b min. Nom. Tol. max. Nom. Tol. min. max. min. min. min. 020 MJ2x0,4-4H6H 4,2 4 h12 3,2 2,2 +0,6 0 3,4 0,4 0,2 1 1,3 0,16 025 MJ2,5x0,45-4H6H 5,3 5 4 2,7 4,4 1,4
27、1,6 0,37 030 MJ3x0,5-4H6H 6,5 6 4,5 3,2 5,4 1,8 2 0,48 040 MJ4x0,7-4H6H 7,6 7 5,6 4,2 6,4 0,5 2,4 2,6 0,98 050 MJ5x0,8-4H6H 8,7 8 6,2 5,2 7,4 3,2 3,2 1,36 060 MJ6x1-4H5H 10,9 10 h13 7,5 6,3 +0,8 0 9,3 4 3,9 2,66 070 MJ7x1-4H5H 12 11 8,8 7,3 10,2 4,8 4,6 3,45 080 MJ8x1-4H5H 14,3 13 10 8,3 12,2 5,5 5,
28、2 6,03 100 MJ10x1,25-4H5H 18,9 17 11,5 10,3 16 0,6 0,3 7 6,5 12 120 MJ12x1,25-4H5H 21,1 19 13,8 12,3 18 8,6 7,8 18,2 140 MJ14x1,5-4H5H 24,5 22 16,1 14,4 21 10,2 9,1 26,9 160 MJ16x1,5-4H5H 26,8 24 18,4 16,4 23 11,8 10,4 33,4 180 MJ18x1,5-4H5H 30,2 27 20,7 18,4 26 13,4 11,7 50,6 200 MJ20x1,5-4H5H 33,6
29、 30 23 20,4 29 15 13 71,6 220 MJ22x1,5-4H5H 35,8 32 25,3 22,4 30,9 16,4 14,3 82 240 MJ24x2-4H5H 40,4 36 27,6 24,5 34,9 18,1 15,6 120 aIn accordance with ISO 5855-2. bApproximate values (kg/1 000 pieces), given for information purposes only. 4 Designation EXAMPLE Description block NUT Identity block
30、EN4297-050 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. BS EN 4297:2017EN 4297:2017 (E) 7 5 Marking EN 2424, style N. See Figure 1. 6 Technical specification ISO 5858, except for: Approval
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