1、STD.AECMA PREN 4374-ENGL 1999 3032333 0037352 bo5 9 AECMA STANDARD prEN 4174 NORME AECMA Edition P I AECMA NORM Decem ber 1999 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMA Gulledelle 94 - El 200 BRUXELLES - Tel. (+32) 2 775 81 10 - Fax. (+32) 2 775 81 11 Edition approved for
2、publication 1999-1 2-31 ICs: 49.030.60 Comments should be sent within six months after the date of publication to AECMA Gulledelle 94 8-1200 BRUXELLES Descriptors: aircraft industry, aircraft equipment, clips, aluminium alloy, specification, characteristic, dimension, mass, dimensional tolerance, su
3、rface treatment, designation, marking ENGLISH VERSION Aerospace series Collars, swage locking, sheartype, in aluminium alloy 2024, anodized or chromated, metric series Srie arospatiale Bagues sertir, cisaillement, en alliage daluminium 2024, anodises ou chromates, srie mtrique Luft- und Raumfahrt Sc
4、hlieBringe, Schertyp, aus Aluminiumlegierung 2024, anodisiert oder chromatiert, metrische Reihe This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA (The European Association of Aerospace Industries). It is published on green paper for the needs of AECMA- Members.
5、If has been technically approved by the experts of the concerned Technical Committee following comment by the Member countries. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally,
6、without re-identification of the standard. After examination and signature of the AECMA Standard Checking Centre (NPS) and formal agreement of the Oficial Services of the Member countries if will be submitted as a draft European Standard to CE# (European Committee for Standardization) for formal vot
7、e. Nota - Extra copies can be supplied by B.N.A.E. -Technopolis 54 - 199, rue Jean-Jacques Rousseau - 92138 ISSY-LES-MOULINEAUX CEDEX C3 Chairman Mr Visconti I I aecma 1999 STDOAECMA PREN 4374-ENGL 1999 L0123LII 0037353 543 Page 3 prEN 4174: 1999 I Scope This standard specifies the characteristics o
8、f swage collars, sheartype, in aluminium alloy 2024, anodized or chromated, metric series, for maximum operating temperature 120 OC. 2 Normative references EN 2284 Aerospace series - Sulphuric acid anodizing of aluminium and wrought aluminium alloys EN 2319 Aerospace series - Aluminium alloy 2024-T3
9、510 drawn bar a I 75 mm 1) EN 2320 EN 2424 Aerospace series - Aluminium alloy 2024-T4 drawn bar a s 75 mm 1) Aerospace series - Marking of aerospace products EN 2437 EN 4176 Aerospace series - Chromate conversion coatings (yellow) for aluminium and aluminium alloys Aerospace series - Lockbolts, 100“
10、 countersunk normal head or protruding head, tencion- I sheartype, close tolerance, in titanium alloy TI-P64001, anodized or with aluminium pigmented coating - Collars in titanium TLP99002 or aluminium alloy 2024 - Metric series - Technical specification 2) MIL-L-87 1328 Lubricant, Cetyl Alcohol, 1
11、-Hexadecanol, Application to Fasteners 3) 3 Required characteristics 3.1 See figure i and table 2. Dimensions and tolerances are expressed in millimetres and apply after surface treatment. Configuration - Dimensions - Masses 3.2 Materials EN 2319 or EN 2320 3.3 Surface treatments See table 1. Table
12、I Nature I Code I I I EN 22848 Chromic anodizing (silver) I A 1 I EN 2437A2 Clear chromated 1 B 1 Lubrication with cetylic alcohol (chlorine free) according to MIL-L-87132 1) Published as AECMA Standard at the date of preparation of this standard 2) Published as AECMA Prestandard at the date of publ
13、ication of this standard 3) Published by: Department of Defense (DoD), the Pentagon, Washington, D.C.20301, USA Previous page is blank STD-AECMA PREN 4374-ENGL 1999 = 1012311 OOL7354 488 Page 4 prEN 4174: 1999 I= Y5 7r (r) Values in micrometres apply prior to surace treatment. 1 E N Key 1 Marking Fi
14、gure 1 Table 2 max. I min. 0,57 1,58 10,25 9,75 234 I I Approximate values (kgil O00 pieces), calculated on the basis of 2,76 kg/dm3, given for information purposes only 4 Description EXAMPLE: NOTE If necessary, the code 19005 shall be placed between the description block and the identity block - 5 Marking EN 2424, style F (see figure 1). 6 Technical specification EN 4176
