ASD-STAN PREN 4122-2017 Aerospace series - Shank nuts self-locking in heat resisting steel FE-PA2601 (A286) silver plated on thread - Classification 1 100 MPa (at ambient temperatu.pdf

1、 ASD-STAN STANDARD NORME ASD-STAN ASD-STAN NORM ASD-STAN prEN 4122:2017 Edition P2 2017-02 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATION Rue Montoyer 10 - 1000 Brussels - Tel. + 32 2 775 8126 - Fax. + 32 2 775 8131 - www.asd-stan.org ICS: Descriptors: ENGL

2、ISH VERSION Aerospace series Shank nuts, self-locking, in heat resisting steel FE-PA2601 (A286), silver plated on thread Classification: 1 100 MPa (at ambient temperature) / 650 C Luft- und Raumfahrt Einnietmuttern, selbstsichernd, aus hochwarmfestem Stahl FE-PA2601 (A286), Gewinde versilbert Klasse

3、: 1 100 MPa (bei Raumtemperatur) / 650 C Srie arospatiale crous sertir, freinage interne, en acier rsistant chaud FE-PA2601 (A286), argents sur filetage Classification : 1 100 MPa ( temprature ambiante ) / 650 C This “Aerospace Series“ Prestandard has been drawn up under the responsibility of ASD-ST

4、AN (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 comments. Subsequent to the publication of this Prestandard, t

5、he 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, the ASD-STAN prEN will be submitted as a draft European Standard

6、(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 standard and by withdrawing any national standards conflicting

7、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 any particular use, including any patent infringement arising t

8、herefrom, 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 written comments or any suggestions that may arise. All rights rese

9、rved. 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. Order details: E-mail: salesasd-stan.org Web address: http:/www

10、.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-STAN prEN 4122:2017 (E) 2 Contents Page Foreword . 3 1 Scope 4 2 Normative references 4 3 Required characteristics . 4

11、3.1 Configuration Dimensions Tolerances Masses . 4 3.2 Materials . 4 3.3 Surface treatment 4 4 Designation 6 5 Marking . 6 6 Technical specification 6 prEN 4122:2017 (E) 3 Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Mechanical Domain. After inquiries and vote

12、s 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 4122:2017 (E) 4 1 Scope This standard specifies the characteristics of self-locking shank nuts in FE-PA2601, silver plated on thread, for aero

13、space applications. Classification: 1 100 MPa 1)/ 650 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 references, the latest edition of the referenced document (inc

14、luding any amendments) applies. EN 2399, Aerospace series Heat resisting steel FE-PA2601 (X4NiCrTiMoV26-15) Rm 900 MPa Bars for forged bolts D 25 mm EN 2424, Aerospace series Marking of aerospace products EN 2786, Aerospace series Electrolytic silver plating of fasteners EN 3004, Aerospace series Nu

15、ts, self-locking, MJ threads, in heat resisting steel FE-PA2601 (A286) Classification: 1 100 MPa (at ambient temperature) / 650 C Technical specification EN 3639, Aerospace series Heat resisting alloy FE-PA2601 Softened and cold worked Wire for forged fasteners D 15 mm 900 MPa Rm 1 100 MPa 3) ISO 58

16、55-2, Aerospace 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 Materials EN 2399 or EN 363

17、9 3.3 Surface treatment EN 2786 on thread and chamfers 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

18、 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 strength class. 2)Maximum test temperature of the parts 3)Published as ASD-STAN Pre-Standard at the date of publication of this standard http:/www.asd-st

19、an.org/ prEN 4122:2017 (E) 5 Key 1 values 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 requireme

20、nt (tooling marks permissible). 7 pitch 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 4122:2017 (E) 6 Table 1 Thread aC E H J L P S T Z Mass kg/1 000 parts Code Designation null

21、0,1 null 0,25 h14 + 0,1 0 nom.Tol. 0 0,1 null 0,1 null 0,25max. 050 MJ5null0,8-4H6H 7 13 7 5,2 1,8 0,10 6,5 9,5 2,4 8,5 2,7 060 MJ6null1-4H5H 8 14 8 6,2 7,5 10,5 9,5 3,35 070 MJ7null1-4H5H 9 16 9 7,2 2,8 8,5 11,5 3,4 10,5 4,16 080 MJ8null1-4H5H 10 17 10 8,2 3,2 0,15 9,5 12,5 3,9 11,5 5,4 aIn accorda

22、nce 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 EN4122050 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 3004