1、 ASD-STAN STANDARD NORME ASD-STAN ASD-STAN NORM ASD-STAN prEN 4123:2017 Edition P2 2017-02 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATION Rue Montoyer, 10 -1000 Brussels - Tel +32 2 775 81 26 - Fax +32 2 775 81 31 - www.asd-stan.org ICS: Descriptors: ENGLIS
2、H VERSION Aerospace series Shank nuts, self-locking, in heat resisting nickel base alloy NI-PH2601 (Inconel 718), silver plated on thread Classification: 1 550 MPa (at ambient temperature) / 600 C Luft- und Raumfahrt Einnietmuttern, selbstsichernd, aus hochwarmfester Nickelbasislegierung NI-PH2601 (
3、Inconel 718), Gewinde versilbert Klasse: 1 550 MPa (bei Raumtemperatur) / 600 C Srie arospatiale crous sertir, freinage interne, en alliage rsistant chaud base de nickel NI-PH2601 (Inconel 718), argents sur filetage Classification : 1 550 MPa ( temprature ambiante ) / 600 C This “Aerospace Series“ P
4、restandard has been drawn up under the responsibility of ASD-STAN (The AeroSpace and Defence Industries Association of Europe - Standardization). It is published for the needs of the European Aerospace Industry. It has been technically approved by the experts of the concerned Domain following member
5、 comments. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and review by users and formal agreement of ASD-STAN, th
6、e ASD-STAN prEN will be submitted as a draft European Standard (prEN) to CEN (European Committee for Standardization) for formal vote and transformation to full European Standard (EN). The CEN national members have then to implement the EN at national level by giving the EN the status of a national
7、standard and by withdrawing any national standards conflicting with the EN. ASD-STAN Technical Committee approves that: “This document is published by ASD-STAN for the needs of the European Aerospace Industry. The use of this standard is entirely voluntary, and its applicability and suitability for
8、any particular use, including any patent infringement arising therefrom, is the sole responsibility of the user.” ASD-STAN reviews each standard and technical report at least every five years at which time it may be revised, reaffirmed, stabilized or cancelled. ASD-STAN invites you to send your writ
9、ten comments or any suggestions that may arise. All rights reserved. No parts of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of ASD-STAN.
10、Order details: E-mail: salesasd-stan.org Web address: http:/www.asd-stan.org/ Edition approved for publication 1stFebruary Comments should be sent within six months after the date of publication to ASD-STAN Mechanical domain Copyright 2017 ASD-STANprEN 4123:2017 (E) 2 Contents Page Foreword 3 1 Scop
11、e 4 2 Normative references 4 3 Required characteristics 4 3.1 Configuration Dimensions Tolerances Masses . 4 3.2 Material . 4 3.3 Surface treatment . 4 4 Designation 6 5 Marking . 6 6 Technical specification 6 prEN 4123:2017 (E) 3 Foreword This standard was reviewed by the Domain Technical Coordinat
12、or of ASD-STANs Mechanical Domain. After inquiries and votes carried out in accordance with the rules of ASD-STAN defined in ASD-STANs General Process Manual, this standard has received approval for Publication. prEN 4123:2017 (E) 4 1 Scope This standard specifies the characteristics of self-locking
13、 shank nuts in NI-PH2601, silver plated on thread, for aerospace applications. Classification: 1 550 MPa 1)/ 600 C 2)2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated ref
14、erences, the latest edition of the referenced document (including any amendments) applies. EN 2424, Aerospace series Marking of aerospace products EN 2786, Aerospace series Electrolytic silver plating of fasteners EN 2952, Aerospace series Heat resisting alloy NI-PH2601 Solution treated and cold wor
15、ked Bar for forged fasteners D 50 mm 1 270 MPa Rm 1 550 MPa 3)EN 4047, Aerospace series Nuts, self-locking, MJ threads, in heat resisting nickel base alloy NI-PH2601 (Inconel 718), silver plated Classification: 1 550 MPa (at ambient temperature) / 600 C Technical specification ISO 5855-2, Aerospace
16、MJ threads Part 2: Limit dimensions for bolts and nuts 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 Material EN 2952 3.3 Surface treatment EN 2
17、786 on thread only Thickness: thread MJ6: 5 m min. on thread flanks; thread MJ5: shall show complete coverage, without thickness requirement. Coating may extend to counterbore and chamfers at manufacturers option, without thickness requirement. 1)Correspond to the minimum tensile stress which the nu
18、t is able to withstand at ambient 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 ASD-STAN Prestandard at the date of publication of this standard. http:/www.asd-stan.org/ prEN 4123:2017 (E) 5 Key 1 v
19、alues applicable before silver plating. Thread surface will be as achieved by normal methods of manufacture. 2 remove sharp edges 0,1 to 0,4. 3 not convex 4 chamfer or radius 0,08 max. 5 thread 6 form out-of-round in this area to achieve the self-locking requirement (tooling marks permissible). 7 pi
20、tch diameter 8 marking in these areas but not in locking area Details of form not stated are left to the manufacturers discretion. aLimit of the blend radius Figure 1 prEN 4123:2017 (E) 6 Table 1 Thread aC E H J L P S T Z Mass kg/1 000 parts Code Designation null 0,1 null 0,25 h14 + 0,1 0 nom.Tol. 0
21、 0,1 null 0,1 null 0,25max. 050 MJ5null0,8-4H6H 7 13 7 5,2 1,8 null 0,10 6,5 9,5 2,4 8,5 2,78 060 MJ6null1-4H5H 8 14 8 6,2 7,5 10,5 9,5 3,45 070 MJ7null1-4H5H 9 16 9 7,2 2,8 8,5 11,5 3,4 10,5 4,28 080 MJ8null1-4H5H 10 17 10 8,2 3,2 null 0,15 9,5 12,5 3,9 11,5 5,56 aIn accordance with ISO 5855-2. In
22、the self-locking zone, the tolerances apply before forming out-of-round. 4 Designation EXAMPLE Description block NUT Identity block EN4123050 Number of this standard 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 4047
