1、AECMA STANDARD NORME AECMA AECMA NORM Declassification approved 1994-04-29 prEN 2370 Edition 2 April 1994 The equivalent versions in French and German languages can be supplied by B.N.A.E. - Technopolis 54 - 199, rue Jean-Jacques Rousseau 921 38 ISSY - LES - MOULINEAUX CEDEX FRANCE DITE PAR LASSOCIA
2、TION EUROPEENNE DES CONSTRUCTEURS DE MATRIEL AEROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cedex - Tl. (1) 47.36.98.76 Supersedes Edition 1 November 1983 ENGLISH VERSION Nuts, hexagon, steel, cadmium plated Aerospace series Classification : I 100 MPa1235 OC c
3、rous hexagonaux, en acier, cadmis Srie arospatiale Classification : 1 100 MPa/235 OC Luft- und Raumfahrt Sechskantmuttern, aus Stahl, verkadmet Klasse : 1 100 MPa1235 OC This industrial standard for the aerospace sector ha (Associa tion Europenne des Constructeurs de M It is published on yellow pape
4、r in three e ean Standard. Y Replace page 1 of the previous edition by this page I AECMA Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I AECMA PREN23
5、70 83 U 10L23LL 0003025 9 U I prEN2370 Page 2 Contents 1 2 3 4 5 6 7 8 Scope Field of application References Materials and surface treatments Req u ired character ist ics Designat ion Marking Technical specification i= CO Copyright Association Europeene des Constructeurs de Materiel Aerospatial Prov
6、ided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AECMA PREN2370 83 B 2012322 000302b O prEN2370 Page 3 A.E.C.M.A. STANDARD prEN2370 Nuts, hexagon steel, cadmium plated Classification : 1100 MPa/235 OC 1 Scope This standard specifi
7、es the characteristics of cadmium plated hexagonal nuts in steel. 2 Field of application These nuts are intended for use on aircraft assemblies subjected principally to tensile load. They shall be associated with bolts of 1 I00 MPa tensile classification. The cadmium plating restricts the applicatio
8、n to temperatures not exceeding 235 “C. 3 References IS0 5855/1, MJ Threads - Part 1 : Basic profile. IS0 5855/2, MJ - Threads - Part 2 : Dimensions for bolts and nuts. EN2133, Cadmium plating of steels with maximum specified tensile strength equal to or less than EN2205, Steel FE-PL43S - 9OOMPa R,
9、1100 MPa - Bars - De 40 mm. EN2424, Identification marking of standard fasteners. EN2427, Nuts, plain and slotted - Technical Specification l. EN2438, Steel FE-PL62 - 900 MPa Rm 1100 MPa - Bars - De EN2444, Steel FE-PL711 - 900 MPa Rm d 1 I00 MPa - Bars and wires - De 45 mm. EN2448, Steel FE-PL45 -
10、900 MPa Rm 1100 MPa - Bars - De 40 mm. 1450 MPa, and copper and copper alloys. 40 mm. 4 Materials and surface treatments 4.1 Materials Steel EN2205 or EN2438 or EN2444 or EN2448. 4.2 Surface treatments Cadmium plating N2133, 7 to 10 pm. 1) In preparation . E- Copyright Association Europeene des Cons
11、tructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AECMA PREN2370 83 m L0123Ll 0003027 2 m prEN2370 Page 4 5 Required characteristics 5.1 Configuration shall correspond with the figure. Dimensio
12、ns and tolerances shall correspond with the figure and table I. These dimensions apply after cadmium plating. 5.2 Threads IS0 5855, part 1 and part 2 after cadmium plating. Configuration - Dimensions - Tolerances 5.3 Surface roughness Ra = 6,3 pm all over except where specified. These values apply p
13、rior to cadmium plating. The surface roughness for the thread will be as achieved by normal methods of manufacture. Form of contour within limiting dimensions at manufacturers option (Appicable Marking (see clause 7) both faces) , I II Figure - Configuration 1) All forms of entry are optional within
14、 those limiting dimensions (radius or chamfer) Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-prEN2370 Page 5 - a? t O0 I s. lo N. O I II , ml r I3 O
15、- O c9 Io m. -JO +I I I I I III I I I t I N. O c3, O ! 1/ x/ a. O ! *. O I- l+ Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AECMA PREN2370 83 101231
16、1 0003029 b prEN2370 Page 6 6 Designation Each nut shall only be designated as in the following example : Description block Identity block NUT I ENj370y Number of EN standard - = Locking holes code 100 = Thread code (See table I) Where the following codes apply : F = With locking holes - = Without l
17、ocking holes. NOTE : If necessary the originator code S9005 may be introduced between the description block and the identity block. 7 Marking Each nut shall be marked at the position indicated in the figure in accordance with EN2424 according to the marking styles defined in table 2. TABLE 2 Thread
18、code Marking style 020 to 040 G 050 to 070 E I 080 to 160 I C I 180 to 200 A I 8 Technical specification Nuts supplied to this standard shall conform with the requirements of EN2427 l. Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
