1、_ AECMA STANDARD prEN 2373 Edition 2 NORME AECMA AECMA NORM April 1994 DITE PAR LASSOCIATION EUROPEENNE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL 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 Nu
2、ts, hexagon, thin, steel, cadmium plated, left hand thread Aerospace series Classification : 1 100 MPa/235 OC crous hexagonaux bas, en acier, cadmis, filetage gauche Srie arospatiale Classification : 1 100 MPa1235 OC Luft- und Raumfahrt Flache Sechskantmuttern, aus Stahl, verkadmet mit Linksgewinde
3、Klasse : 1 100 MPa/235 OC This industrial standard for the aerospace sector has b U (Associa tion Eurooenne des Constructeurs de Ma;dr the responsibility of It is published on yetlo w paper in three It will be submitted to CEN Replace page 1 of the previous edition by this page AECMA Dedassification
4、 approved 1994-04-29 The equivalent versions in French and German can be supplied by B.N.A.E. - Technopolis 54 - 199, rue Jean-Jacques Rousseau 921 38 ISSY - LES - MOULINEAUX CEDEX - FRANCE aecma 1994 Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under lic
5、ense with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AECMA PREN2373 83 W LOL23LL 0003043 O W - prEN2373 Page 2 Contents Scope Field of application References Materials and surface treatments Required characteristics Designation Marking Technical specifica
6、tion 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 prEN2373 Page 3 , I A.E.C.M.A. STANDARD prE N2373 Nuts, hexagon, thin steel, cadmium plated left
7、 hand thread Classification : 1100 MPa/235 OC 1 Scope This standard specifies the characteristics of cadmium plated thin hexagonal nuts in steel with left hand thread. 2 Field of application These nuts are intended for use on aircraft assemblies subjected principally to shear loading. They are inten
8、ded to be used with bolts of 1100 MPa tensile classification. The cadmium plating restricts the application 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. EN21 33, Cadmium platin
9、g of steels with maximum specified tensile strength equal to or less than 1450 MPa, and copper and copper alloys. EN2205, Steel FE-PL43S - 900 MPa Rm 1100 MPa - Bars - De 40 mm. EN2424, Identification marking of standard fasteners. EN2427, Nuts, plain and slotted - Technical Specification l. EN2438,
10、 Steel FE-PL62 - 900 MPa Rm 1100 MPa - Bars - De 40 mm. EN2444, Steel FE-PL711 - 900 MPa Rm 1100 MPa - Bars and wires - De 45 mm. EN2448, Steel FE-PL45 - 900 MPa Rm 1100 MPa - Bars - De k 40 mm. 4 Materials and surface treatments 4.1 Materials Steel EN2205 or EN2438 or EN2444 or EN2448. 4.2 Surface
11、treatments Cadmium plating EN2133, 7 to 10 pm. 1) In preparation. I I 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 PREN2373 83 m LOL23LL 00030
12、45 LI W prEN2373 Page 4 5 Required characteristics 5.1 Configuration - Dimensions - Tolerances Configuration shall correspond with the figure. Dimensions and tolerances shall correspond with the figure and table 1. These dimensions apply after cadmium plating. 5.2 Threads IS0 5855, part 1 and part 2
13、 after cadmium plating. 5.3 Surface roughness Ra = 6,3 pm, all over except where specified. These values apply prior to cadmium plating. The surface roughness for the thread will be as achieved by normal methods of manufacture. 2 locking holes of OK when designated (see clause 6) Form of contour wit
14、hin limiting dimensions at ,I: I ,Marking (see clause 7) I 1 YW I 3 places E NI Z I Detail Y Figure - Configuration 1) All forms of entry are optional within those limiting dimensions (radius or chamfer). 2) Bearing face may be flat to concave, but shall not be convex. Diameter Ef H may be tangentia
15、l to, but shall not intrude on the flats. 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 PREN2373 83 LOL23LL 00030gb b = prEN2373 Page 5 VI w F
16、.- E - .- E C C O .- VI .- E n .- E VI VI m x E 7 2 E m ln S O . E I 7 w -I 2 I- -.I Lo 1 2 O O! c e E 7 .- .i E C E x E (3- m m. O rc! O O O P Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networkin
17、g permitted without license from IHS-,-,-AECIA PREN2373 83 M L0123LL 00030Ll7 8 W prEN2373 Page 6 Where the following codes apply : F = with locking holes. - = without locking holes. NOTE : If necessary the originator code S9005 may be introduced between the description block and the identity block.
18、 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-code 080 to 160 180 to 200 Marking style I I C 8 Technical specification Nuts supplied to this standard shall conform with the requirements of EN2427 1 ). 1) In preparation. 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-,-,-
