1、CEN PREN*2414 93 3404589 0049411 3Tb AECMA STANDARD prEN 2414 NORME AECMA Edition P 1 AECMA NORM August 1993 DIT PAR LASSOCIATION EUROPCENNE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cedex - Tl. (1 ) 47.36.98.76 UDC Descriptors
2、 : ENGLISH VERSION Aerospace series Washers, chamfered, with counterbore, in alloy steel, cadmium plated Srie arospatiale Rondelles, fraises, avec chambrage, en acier alli, cadmies Luft- und Raumfahrt Stulpschei ben, aus legiertem Stahl, verkadmet This “Aerospace Series“ Prestandard has been drawn u
3、p under the responsibility of AECMA (Association Europenne des Constructeurs de Matriel Arospatial). It is published on green paper for the needs of AECMA-Members. It has been technically approved by the experts of the concerned Technical Committee folio wing comment by the Member countries. Subsequ
4、ent 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 signature of the AECMA Standard Checking Centre (NPS) and formal agree
5、ment of the Official Services of the Member countries it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. Nota - Extra copies can be supplied by B.N.A.E. - Technopoiis 54 - 199, rue Jean-Jacques Rousseau - 92138 ISSY-LES-MOULINEAUX CEDEX
6、 Edition approved for publication 1993-08-31 C3 Chairman Mr. Arena Comments should be sent within six months after the date of publication to AECMA Technopolis - 175, rue Jean-Jacques Rousseau 921 38 Issy-les-Moulineaux Cedex - FRANCE aecma 199 A CEN PREN+2414 93 W 3404589 0049432 232 prEN 2414 Page
7、 3 1 Scope This standard specifies the characteristics of chamfered washers, with counterbore, in alloy steel, cadmium plated, for maximum operating temperature 235 OC. 2 Normative references EN 2000 Aerospace series - Quality assurance - EN aerospace products - Approval of the quality system of man
8、ufacturers Cadmium plating of steels with maximum specified tensile strength equal to or less than 1 450 MPa and copper and copper alloys - Aerospace series 1) Steel FE-PL43 S - 900 MPa I R, I 1 100 MPa - Bars De I 40 mm - Aerospace series 1) Aerospace series - Identification marking of standard fas
9、teners l) Steel FE-PL62 - 900 MPa I R, I 1 100 MPa - Bars De I 40 mm - Aerospace series 1) Steel FE-PL711 - 900 MPa I R, 5 1 100 MPa - Bars and wires De I 45 mm - Aerospace series 1) EN 2133 EN 2205 EN 2424 EN 2438 EN 2444 3 Required characteristics 3.1 Configuration - Dimensions - Masses See figure
10、 1 and table 1. Dimensions asid tolerances are expressed in millimetres. They apply after surface treatment. 3.2 Material EN 2205, EN 2438 or EN 2444 3.3 Surface treatment EN 2133, 7 pm to 10 pm on all surfaces which can be contacted by a 20 mm diameter ball. On all other surfaces, a continuous depo
11、sit shall be present, but no value is specified. 1 ) Published as AECMA Standard at the date of publication of this standard Previous page is blank CEN PREN*2414 93 3404589 0049413 179 prEN 2414 Page 4 6;*/3r3 Vatues in micrometres apply prior to surface treatment. Remove sharp edges 0,l to 0,4 Thic
12、k. series : 4 R 0.6 2 0,l 45“ 2 1“ Figure 1 + 0,2 0 1) Thickness code (see figure 1) 2) Approximate values (kg/l000 pieces), calculated on the basis of 7,85 kg/drn3, given for information purposes only CEN PRENWLY 93 m 30589 OOYSW o05 m prEN 2414 Page 5 4 Designation EXAMPLE : Description block Iden
13、tity block WASHER EN2414A080 Number of this standard Thickness code (see figure 1) Diameter code (see table 1) I NOTE : If necessary, the code 19005 shall be placed between the description block and the identity block. 5 Marking EN 2424, style G, plus quantity (mass or number) 6 Quality assurance EN 2000
