1、 ASD-STAN STANDARD NORME ASD-STAN ASD-STAN NORM ASD-STAN prEN 2944 Edition P2 March 2017 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: ENGLISH
2、VERSION Aerospace series Inserts, screw thread, helical coil, self-locking, in corrosion resisting steel FE-PA3004 Luft- und Raumfahrt Draht-Gewindeeinstze, selbstsichernd aus korrosionsbestndigem Stahl FE-PA3004 Srie arospatiale Filets rapports, freinage interne, en acier rsistant la corrosion FE-P
3、A3004 This “Aerospace Series” Prestandard 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 co
4、ncerned Domain following member 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 f
5、ormal agreement of ASD-STAN, the 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 t
6、he EN the status of a national 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 appl
7、icability and suitability for 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
8、 invites you to send your written 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 wri
9、tten permission of ASD-STAN. Order details: E-mail: salesasd-stan.org Web address: http:/www.asd-stan.org/ Edition approved for publication 1st March 2017 Comments should be sent within six months after the date of publication to ASD-STAN Mechanical domain prEN 2944:2017 (E) 2 Contents Page Foreword
10、 3 0 Introduction . 3 1 Scope . 4 2 Normative references . 4 3 Required characteristics . 4 4 Designation . 8 5 Marking 9 6 Technical specification . 9 prEN 2944:2017 (E) 3 Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Mechanical Domain. After inquiries and vot
11、es carried out in accordance with the rules of ASD-STAN defined in ASD-STANs General Process Manual, this standard has received approval for Publication. 0 Introduction For design and assembly procedures see EN 3044 and EN 2945. prEN 2944:2017 (E) 4 1 Scope This standard specifies the characteristic
12、s of inserts, self-locking, helical coil, tanged insertion drive, screw thread in NI-PH2801, for aerospace applications. Maximum test temperature: 350 C 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the ed
13、ition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2424, Aerospace series Marking of aerospace products EN 2943, Aerospace series Inserts, screw thread, helical coil, self-locking Technical specification EN 2945, Aerospac
14、e series Inserts, screw thread, helical coil, self-locking Assembly procedure EN 2947, Aerospace series Steel FE-PA3004 (X10CrNi18-09) Air melted Non heat treated Cold drawn wire a or D = 2,3 mm EN 3044, Aerospace series Installation holes for inserts, screw thread, helical coil, self-locking Design
15、 standard ISO 5855-2, 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 and Table 2. Dimensions and tolerances are in millimeters. 3.2 Material See EN 2947. 3.3 Material identification C
16、olour: blue No chlorine-based constituents permitted in the colour identification product. prEN 2944:2017 (E) 5 prEN 2944:2017 (E) 6 Key a Form out-round in this area to achieve the self-locking requirements (tool marks permissible) b Tang c Number of coils d Marking e Lead-in face of installation h
17、ole f Installation g See detail Y h min. profile i max. profile j R, min, tangential to flanks k Straight portion of flank l Locking feature shall be at least in the zone Y max. X min. It shall take place on at least two coils separated by a plain coil, except in the case of inserts of diameters 4,
18、5 and 6 and a nominal length of 1,25 D where the plain coil may be omitted. m The number of coils is counted from the notch. p Length of fitted insert to notch. q Dimensions after coiling, corresponding to an insert fitted in an installation hole to EN 3044. r section A-A is perpendicular to the hel
19、ical axis. Figure 1 Layout drawing, dimensions destined for design depts. Details of form not stated are left to the manufacturers discretion prEN 2944:2017 (E) 7 Table 1 Dimensions (1 of 2) Diameter code Threada (Associated screw) A Bmin. Bmax Cmax Cmin Emax Emin F Hmax Hmin min. . max. . . 040 MJ4
20、 0,7 0,163 5,05 5,60 0,758 0,683 0,612 0,51 0,35 0,455 0,4445 050 MJ5 0,8 0,209 6,25 6,80 0,866 0,775 0,7 0,598 0,4 0,52 0,5085 060 MJ6 1 0,267 7,40 7,95 1,083 0,975 0,875 0,748 0,5 0,65 0,637 070 MJ7 1 8,65 9,20 080 MJ8 1 9,70 10,25 100 MJ10 1,25 0,415 12,10 12,65 1,353 1,251 1,094 0,967 0,625 0,81
21、2 0,799 Table 1 (2 of 2) Diameter code J P P R1 S U U V AA max. . min max. min. min. min. max. min. max. max. min. 040 5,6 4,9 3,55 2,5 0,126 0,219 1,67 1,02 0,45 0,34 0,31 050 6,8 6,1 4,55 3,15 1,144 0,25 2,09 1,41 0,6 0,37 0,34 060 7,95 7,25 4,85 3,7 0,18 0,312 2,55 1,65 0,5 0,45 070 9,2 8,4 5,5 4
22、,3 3,1 2,09 0,75 080 10 9,2 6,5 4,75 3,88 2,27 100 12,3 11,5 8 5,5 0,226 0,391 4,77 2,86 0,6 0,55 1 In accordance with ISO 5855-2. prEN 2944:2017 (E) 8 Table 2 Dimensions, number of turns, mass (1 of 2) Diameter code Threada (Associated screw) L L1 +0,250 Number of turns Q 0,25 1,5 D 2 D 2,5 D 1,5 D
23、 2 D 2,5 D 1,5 D 2 D 2,5 D 040 MJ4 0,7 6 8 10 5,47 7,47 9,47 6,1 8,6 11,1 050 MJ5 0,8 7,5 10 12,5 6,90 9,40 11,90 6,9 9,6 12,4 060 MJ6 1 9 12 15 8,25 11,25 14,25 6,8 9,5 12,1 070 MJ7 1 10,5 14 17,5 9,75 13,25 16,75 8 11,1 14,1 080 MJ8 1 12 16 20 11,25 15,25 19,25 9,4 13 16,5 100 MJ10 1,25 15 20 25 1
24、4,25 19,25 24,25 9,5 13,1 16,8 Table 2 (2 of 2) Diameter code Mass Xb min. Yb kg/1 000 pieces 1,5 D 2 D 2,5 D 1,5 D 2 D 2,5 D 1,5 D 2 D 2,5 D 040 0,8 2,5 3,1 4,8 0,22 0,31 0,39 050 1,3 3,8 3,7 3,9 6,3 6,3 0,4 0,55 0,7 060 2,2 5,1 0,72 0,99 1,26 070 1,2 5,9 5,5 0,99 1,36 1,73 080 2,5 6,8 1,32 1,8 2,2
25、8 100 3,7 2,57 3,52 4,46 a In accordance with ISO 5855-2. b X and Y dimensions apply after installation of the thread insert. 4 Designation EXAMPLE Description block THREAD INSERT Identity block EN2944 070 120 Number of this standard Diameter code (see Table 1) Length code ( L in millimetres multiplied by 10, see Table 2) NOTE lf necessary, the code I9005 shall be placed between the description block and the identity block. prEN 2944:2017 (E) 9 5 Marking See EN 2424 style G; additionally style F permitted, as indicated on Figure 1. 6 Technical specification See EN 2943.
