1、I I, -. . A.E,C.M.A. STANDARD NORM E A.E. C. M .A. A.E.C.M.A. NORM prEN2911 Issue P 1 May 1986 EDITE PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATRIEL AEROSPATIAL 88, boulevard Malesherbes, 75008 PARIS -TL. 45-63-82-85 UDC : Key words : ENGLISH VERSION Aerospace series Shank nuts, self locking
2、, flange restrained, in heat resisting steel FE-PA92HT (A286) silver plated Classification : 1 I O0 MPa/650 OC Srie arospatiale crou sertir, auto-freinant, en acier rsistant chaud FE-PA92HT (A286) argent Classification : 11 O0 MPa/650 OC Luft- und Raumfahrt Einnietmuttern, selbstsichernd, aus hochwa
3、rmfestem Stahl FE-PA92HT (A286) versilbert Klasse : 11 O0 MPa/650 OC This standard is initially published on green paper for the needs of AECMA-Members (Association Europenne des Constructeurs de Matriel Arospatial). It has been technically approved by the experts of the concerned AECMA Commission f
4、ollowing comment by the manufacturers of the Member countries. 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 published in its final version on yellow paper as an AECMA Standard. Nota - Extr
5、a copies can be supplied by B.N.A.E. - 8, rue Moreau-Vauthier - 92100 BOULOGNE-BILLANCOURT I Comments should be sent within six months C8 Chairman I after the date of publication decision Edition approved for publication 15 May 1986 A.E.C.M.A. 88, Bd. Malesherbes Mr WILLIAMS 75008 PARIS - FRANCE aec
6、ma 1986 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-,-,-prEN2911 Page 3 Issue PI 1 Scope and field of application This standard specif ies the dimensio
7、ns of self-locking, silver-coated shank nuts with MJ- thread, of heat resisting steel FE-PA92-HT, for aerospace applications at a maximum temperature of 650 OC. 2 References EN2399 Heat resisting steel FE-PA92-HT; Rm-900 MPa, bars for forged bolts DG25 mm - Aerospace series EN2424 Identification mar
8、king of standard fasteners - Aerospace series EN2786 Aerospace series - Electrolytic deposition of silver on metals (1) EN3004 Aerospace series - Nuts, self-locking, material FE-PA92-HT, classification 1100 MPa/650 OC; Technical specifications (1) IS05855/1 Aerospace construction - MJ threads - Part
9、 1: Basic profile iSO5855/2 Aerospace construction - MJ threads - Part 2: Dimensions for bolts and nuts IS08788 Aerospace Fasteners - Tolerances of form and position for nuts (1) 3 Required characteristics 3.1 Material Heat resisting steel FE-PA92-HT according to EN2399 3.2 Configuration - Dimension
10、s - Tolerances - Masses Configuration, dimensions, tolerances (2) and masses shall be in conformity with the values in the figure and in table. Dimensions are after coating. 3.3 Surface treatment Silver coat to EN2786, coating thickness 5 to 15 /um. On nuts MJ6 and larger, the coating thickness shal
11、l be not less than 5 /um, measured at the pitch diameter. Nuts MJ5 and smaller shall show complete coating coverage on the threads. i : - 3.4 Thread surface Thread surface will be achieved by normal methods of manufacture. Previous page is blank (i) in preparation (2) In conformity with IS08788 for
12、tolerances of form and position 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 AE-C-NA PRENZILL Bb it032311 0004i.107 b M Thread CJ P E H L C T 2 t0
13、,l o Diarne ter D %,i o -0,l h13 h14 TOI. + -0,l +0,25 rnax. code 050 fdJ 50, -4li6H 7 5,2 6,5 13 7 1,8 t0,10 9,5 2,4 8,5 060 MJ 6x1 -4H5H O 6,2 7,5 14 8 1,8 t0,lO 10,5 2,4 9,5 070 MJ 7x1 -4H51-I 9 7,2 8,5 16 9 2,8 t0,lO 11,5 3,4 10,5 O80 MJ 8x1 -4H51-I 10 ,2 9,5 17 10 3,2 :0,15 12,5 3,9 11,5 prEN29
14、11 Page 4 Issue PI Mass - kg/lUUU parts 2,70 3,35 4,16 5;40 o 13 A Bearing surface may be flat or concav, WnIbut shall not be convex. Figure - Configuration Table - Dimensions and masses Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECM
15、ANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AECMA PREN2911 Bb W LOI12311 OOL1408 B -2 Description block prEN2911 Page 5 Issue PI Identity block 4 Designation 5 Marking The shank nuts shall be marked according to EN2424, class A. 6 Technical specification The shank nuts shall conform with the requirements of EN3004 (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-,-,-
