1、- CEN PREN*E!92b 92 W 340q589 0033380 776 Edition approved for publication 1992-08-31 A. E. C. M .A. STAN DAR D NORME A.E.C.M.A. A.E.C.M.A. NORM Comments should be sent within six months after the date of publication decision A E.C.M.A. Technopolis - 175. rue Jean-Jacques Rousseau 92138 Issy-les-Mou
2、lineaux Cdex - FRANCE - prEN 2926 Issue P 2 August 1992 EDITE PAR LASSOCIATION EUROPEENNE DES CONSTRUCTEURS DE MATERIEL AEROSPATIAL Technopoiis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cdex - Tel (1) 47 36 98 76 UDC : Supersedes Issue P 1 May 1986 Key words : ENGLISH VERSION Ae
3、rospace series Bolts with double hexagon head, relieved shank, long thread, in heat resisting steel FE-PA92HT (A286), silver plated Classification : 900 MPa / 650 OC Srie arospatiale Luft- und Raumfahrt Zwlf kantschrauben, Dnnschaft, langes Gewinde, aus hochwarmfestem Stahl FE-PA92HT (A286). Klasse
4、: 900 MPa / 650 OC Vis tte bihexagonale. tige rduite, filetage long, en acier rsistant chaud FE-PA92HT (A286). Classification : 900 MPa / 650 OC argentees versilbert This .Aerospace Series pre-standard has been drawn up under the responsibility of AECMA (Association Europenne des Constructeurs de Ma
5、triel Arospatial). It is published on green paper for the needs of AECMA-Members. It has been technically approvedby the experts of the concerned Commission following comment by the Member countries. Subsequent to the publication of this pre-standard, the technical content shall not be changed to an
6、 extent that interchangeabilit y is affected, physically or functionally, without re-identification of the standard. After examination and signature of the AECMA Standard Checking Centre (NPS) and formal agreement of the Official Services of the Member countries it will be submitted as a draft Europ
7、ean Standard to CEN (European Committee for Standardization) for final vote. Nota - Extra copies can be supplied by E N.A.E - Technopolis 54 - 199, rue Jean-Jacques Rousseau - 92138 ISSY-LES-MOULINEAUX CEDEX I I C8 Chairman Mr WILLIAMS I I CEN PREN*2926 92 34L14589 0031381 b02 prEN 2926 Page 3 1 Sco
8、pe and field of application This standard specifies the characteristics of double hexagon headed bolts with relieved shank and long thread in FE-PA92HT, silver plated, for aerospace applications. Classification : 900 MPa ) / 650 OC 21 2 References IS0 3353, Aerospace construction - Rolled threads -
9、Runout and lead threads IS0 4095, Fasteners for aerospace construction - Bi-hexagonal wrenching configuration IS0 5855-2, Aerospace - MJ threads - Part 2 : Limit dimensions for bolts and nuts EN 2399, Heat resisting steel FE-PA92-HT - Rm 2 900 MPa - Bars for forged bolts - D 5 25 mm - Aerospace seri
10、es 3, EN 2424, Aerospace series - Identification marking of standard fasteners 3, EN 2576, Aerospace series - Bolts in heat resisting steel FE-PA92HT (A2861 - Classification : 900 MPa / 650 OC - Technical specification 4, EN 2786, Aerospace series - Electrolytic silver plating of fasteners EN 3639,
11、Aerospace series - Heat resisting steel FE-PA92HT cold worked and softened - Bars and wires for continuous cold forging or extrusion of fasteners - 3 mm c: D 6 30 mm - R, 1 900 MPa 5, 3 Required characteristics 3.1 Configuration - Dimensions - Tolerances - Masses See figure 1 and tables 1 and 2. Dim
12、ensions and tolerances are in millimetres. They apply after silver plating. 3.2 Material EN 2399 or EN 3639 3.3 Surface treatment EN 2786 Thickness : 3 pm to 6 pm Minimum tensile strength of the material at ambient temperature *) Maximum test temperature of the parts 3, Published as AECMA standard a
13、t the date of publication of the present standard 41 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 - _ I Previous page is blank prEN 2926 Page 4 Thread 1) D EFGH K Cl RI s 2) T U V XYZ Code Desi
14、gnation f 0.13 max. min. min. min. max. min. f 0.5 max. min. min. max. min. max. min. O50 MJ50.8.4h6h 4.48 9.1 8.3 6.8 1 5.65 5.02 3.4 0.5 0.3 7 2 2,s 2.5 3.7 3.2 O60 MJGl-4h6h 5.35 10.6 9.8 7.8 1.2 6.15 5.52 4.2 8 2.3 3.2 2.8 4.6 4.1 0,003 0.15 - 0.12 0.13 3,2 (J O,8 0,8 0,8 d 08 jM) Values apply b
15、efore silver plating. Rolled Remove dwrp edges 0,l to 0,4 r Conforms to / II L_ Shape in this area at manufacturers option -Pitch diameter Thread 1) When the length of the shank is less than one times the nominal value ot the shank diameter D, the run-out is measured at a distance equal to half the
16、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 jl - -_ _ - CEN PREN*2926 92 3404589 0031383 485 prEN 2926 Page 5 or. mo “. m qq
17、 N N N NN x prEN 2926 Page 6 c) 20 +I VI v), 2- j: VI VI, 2 -1 CEN PREN*Z926 92 3404589 0033384 333 W - . _-.- I- CEN PREN82Zb 92 3404587 0033385 258 prEN 2926 Page 7 4 Designation Example : Description block Identity block BOLT I EN2926-0800t J Number of this standard Thread code (see table 1) Length code (see table 2) O - 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
