1、A.E.C.M.A. STAN DARD prEN 2925 NORME A.E.C.M.A. Issue P 2 A.E.C.M.A. NORM August 1992 EDITE PAR L?ASSOCIATION EUROPEENNE DES CONSTRUCTEURS DE MATERIEL AEROSPATIAL Technopoiis - 175. rue Jean-Jacqiies Rousseau - F 921 38 Issy-les Moaiineaux C4r:rlf.x Tel (1 47 36 9e 76 after the date of publication d
2、ecision AECMA Technopolis - 175, rue Jean-Jacquec Rousseau UDC : Key words : Sri Supersedes Issue P 1 May 1986 ENGLISH VERSION Aerospace series Bolts with double hexagon head, relieved shank, long thread, in heat resisting steel FE-PA92HT (A286) Classification : 900 MPa / 650 OC rospatiale Luft- und
3、 R Jrnfahrt Vis tte bihexagonale, tige rduite, filetage long, en acier rsistant chaud FE-PA92HT (A286) Classification : 900 MPa / 650 OC Zwlfkantschrau ben, Dnnschaft, langes Gewinde, aus hochwarrnfestem Stahl FE-PA92HT (A286) Klasse : 900 MPa / 650 OC This .Aerospace Series. pre-standard has been d
4、rawn up under the responsibility of AECMA (Association Europenne des Constructeurs de Matriel Arospatial). It is published un green paper for the needs of AECMA-Members. it has been technically approved by the experts of the concerned Commission following comment by the Member countries. Subsequent
5、to the publication of this pre-standard, 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 agreemen
6、t of the Official Services of the Member countries it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for final vote. Nata - Extra copies can be supplied by 6 NA E - Technopolis 54 - 199. rue Jeaii-Jacques Rousseau - 92138 ISSY-LES I.4GULIIIEAUX CEDEX E
7、dition approved for publication I Comments should be sent within six months I 1992-08-31 C8 Chairman Mr WILLIAMS _- - -_ CEN PRENX2925 92 = 34134589 0031375 309 prEN 2925 Page 3 1 Scope and field of application This standard specifies the characteristics of double hexagon headed bolts with relieved
8、shank and long thread in FE-PA92HT for aerospace applications. Classification : 900 MPa I650 OC 2, 2 References IS0 3353, IS0 4095, Aerospace construction - Rolled threads - Runout and lead threads Fasteners for aerospace construction - Ei-hexagonal wrenching configuration IS0 5855-2, Aerospace - MJ
9、 threads - Part 2 : Limit dimensions for bolts and nuts EN 2399, Heat resisting steel FE-PA92-HT - R, 2 900 MPa - Bars for forged bolts - D 5 25 mm - Aerospace series 3, EN 2424, Aerospace series - Identification Inarking of standard fasteners 3, EN 2576, Aerospace series - Bolts in heat resisting s
10、teel FE-PA92HT (A2861 - Classification : 900 MPa / 650 OC - Technical specification 4, EN 3639, Aerospace series - Heat resisting steel FE-PA92HT cold worked and softened - Bars and wires for continuous cold forging or extrusion of fasteners - 3 mm 5 D 5 30 mm - R, 5 900 MPa 5, 3 Required characteri
11、stics 3.1 Configuration - Dimensions - Tolerances - Masses See figure 1 and tables 1 and 2. Dimensions and tolerances are in millimetres. 3.2 Material EN 2399 or EN 3639 Minimum tensile strength of the material at ambient temperature Maximum test temperature of the parts 3, Published as AECMA standa
12、rd at the date of publication of the present standard 4, Published as AECMA pre-standard at the date of publication of the present standard 5, In preparation at the date of publication of the present standard - -_ .- Previous page is blank CEN PREN*2725 72 3q04587 003L37b 295 R o13mi.- IO3 -7 K Y-.i
13、p U 7- I i Remove +arp edges 0,l to 0,4 rPitcti diarnder I i-Thread I II _-I_ F Conforms to -H u- Shape in this area at manufacturers option Marking -7 12 x 4) When the length of the shank is less than one times the nominal value ot the shank diameter , the run-out is measured at a distance equal to
14、 half the actual shank length. 2) For bolts having a shank length less than one times the nominal value of the shank diameter D, and for those threaded to head, the pitch diameter axis shall be used as the datum. Figure 1 Table 1 - Y .u 3 3 3 c c I- 2 i:; PREN*ZZ5 92 3404589 0031377 1BL = _- I I t.2
15、 f-. P- Cu u. ci h C CEN PREN*2725 92 W 3404589 prEN 2925 Fage 6 0033378 038 W CEN PRENPZ925 92 = 3404589 0031379 T54 a I prEN 2925 Page 7 4 Designation Example : 1 Description block 1 Identity block Thread code (see table 1) Length code (see table 2) - I Note : If necessary, the originator code 19005 shall be placed between the description block and the identity block. 5 Marking EN 2424, style A, as indicated on the figure 1 6 Technical specification EN 2576
