1、BRITISH STANDARD AEROSPACE SERIES BS EN 4120:2004 Nuts, bihexagonal, self-locking, in heat resisting nickel base alloy NI-PH1302 (Waspaloy), silver plated on thread Classification: 1 210 MPa (at ambient temperature)/730 C The European Standard EN 4120:2004 has the status of a British Standard ICS 49
2、.030.30 BS EN 4120:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 21 December 2004 BSI 21 December 2004 ISBN 0 580 45104 6 National foreword This British Standard is the official English language version of EN 4120:2004. The UK particip
3、ation 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 The British Standards which implement
4、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 Standards Online. This publication does not
5、 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 responsible international/European com
6、mittee 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 front cover, the EN title page, pages 2 to
7、 6, an inside back cover 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 4120 November 2004 ICS 49.030.30 Supersedes EN 4
8、120:2003 English version Aerospace series - Nuts, bihexagonal, self-locking, in heat resisting nickel base alloy NI-PH1302 (Waspaloy), silver plated on thread - Classification: 1 210 MPa (at ambient temperature) / 730 C Srie arospatiale - crous bihexagonaux, freinage interne, en alliage rsistant cha
9、ud base de nickel NI- PH1302 (Waspaloy), argents sur filetage - Classification : 1 210 MPa ( temprature ambiante ) / 730 C Luft- und Raumfahrt - Zwlfkantmuttern, selbstsichernd, aus hochwarmfester Nickelbasislegierung NI-PH1302 (Waspaloy), Gewinde versilbert - Klasse: 1 210 MPa (bei Raumtemperatur)
10、/ 730 C 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 bibliogra
11、phical 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 of a C
12、EN 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, Latvi
13、a, 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 2004
14、CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4120:2004: E EN 4120:2004 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Required characteristics.4 4 Designation 6 5 Marking .6 6 Technical specification .6 EN 41
15、20:2004 (E) 3 Foreword This document (EN 4120:2004) 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 National
16、 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 stand
17、ards shall be withdrawn at the latest by May 2005. This document supersedes EN 4120:2003. 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, Denmar
18、k, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 4120:2004 (E) 4 1 Scope This standard specifies the characteristics o
19、f self-locking bihexagonal nuts in NI-PH1302, silver plated on thread, for aerospace applications. Classification: 1 210 MPa 1)/ 730 C 2)2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited appl
20、ies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 4095, Aerospace Bihexagonal drives Wrenching configuration Metric series ISO 5855-2, Aerospace MJ threads Part 2: Limit dimensions for bolts and nuts EN 2424, Aerospace series Marking o
21、f aerospace products EN 2786, Aerospace series Electrolytic silver plating of fasteners 3)EN 2959, Aerospace series Heat resisting alloy NI-PH1302 (NiCr20Co13Mo4Ti3Al) Solution treated and cold worked Bar for forged fasteners 3 mm D 30 mm 3)EN 3005, Aerospace series Nuts, self-locking, MJ threads, i
22、n heat resisting nickel base alloy NI-PH1302 (Waspaloy), silver plated or uncoated Classification: 1 210 MPa (at ambient temperature) / 730 C Technical specification EN 3220, Aerospace series Heat resisting nickel base alloy (NI-P101HT) Cold worked and softened Bar and wire for continuous forging or
23、 extrusion for fasteners 3 D 30 mm 3) 3 Required characteristics 3.1 Configuration Dimensions Tolerances Masses See Figure 1 and Table 1. Dimensions and tolerances are in millimetres. They apply after silver plating for thread surface. 3.2 Materials EN 2959 or EN 3220 3.3 Surface treatment EN 2786 o
24、n thread and chamfers Thickness: thread MJ6: 5 m min. on thread flanks; thread MJ5: shall show complete coverage, without thickness requirement; chamfers: shall show complete coverage, without thickness requirement. 1) Correspond to the minimum tensile stress which the nut is able to withstand at am
25、bient temperature without breaking or cracking when tested with a bolt of a higher strength class. 2) Maximum test temperature of the parts 3) Published as AECMA Prestandard at the date of publication of this standard EN 4120:2004 (E) 5 Key 1 values applicable before silver plating. Thread surface w
26、ill be as achieved by normal methods of manufacture. 2 remove sharp edges 0,1 to 0,4. 3 form out-of-round in this area to achieve the self-locking requirement (tooling marks permissible). 4 marking 5 bihexagonal configuration in accordance with ISO 4095 over length M 6 thread 7 not convex 8 pitch di
27、ameter Details of form not stated are left to the manufacturers discretion. aAll forms of entry (radius or chamfer) are permissible within these limiting dimensions. Figure 1 EN 4120:2004 (E) 6 Table 1 ThreadaE F H J K L M N Y Z Mass kg/1 000 parts Code Designation max. min. max. max. min. min. min.
28、 max. 050 MJ50,8-4H6H 5,8 5,2 7 7 9,1 8,3 2 4,9 1,63 060 MJ61-4H5H 7,1 6,3 8 8,110,69,8 2,3 5,5 2,33 070 MJ71-4H5H 8,1 7,3 9 9,112,111,3 2,6 6,1 3,19 080 MJ81-4H5H 9,1 8,3 10 10,413,612,8 2,8 6,9 0,10 0,2 4,34 100 MJ101,25-4H5H 11,1 10,3 12 13 16,8 15,8 1,2 3,1 8,8 7,69 120 MJ121,25-4H5H 13,1 12,3 1
29、4 15 19,9 18,8 3,5 10,1 0,13 14,58 140 MJ141,5-4H5H 15,2 14,4 17 17,5 23 21,9 1,4 4 12,6 0,15 0,3 19,79 aIn accordance with ISO 5855-2. In the self-locking zone, the tolerances apply before forming out-of-round. 4 Designation EXAMPLE Description block NUT Identity block EN4120-050 Number of this sta
30、ndard Thread code (see Table 1) NOTE If necessary, the code I9005 shall be placed between the description block and the identity block. 5 Marking EN 2424, style A, as indicated on Figure 1. 6 Technical specification EN 3005 blankBS EN 4120:2004 BSI 389 Chiswick High Road London W4 4AL BSI British St
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