1、AECMA PREN2906 86 m LOL231L 0004385 O m f 2 A. E. C. M .A. STAN DARD NORME A.E.C.M.A. A.E.C.M.A. NORM prEN2906 Issue P 1 May 1986 _ DIT PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL 88, boulevard Malesherbes, 75008 PARIS -TL. 45-63-82-85 UDC : Key words : ENGLISH VERSION Aerospa
2、ce series Nuts, self locking, bi hexagonal, in heat resisting steel FE-PA92HT (A286) unplated Classification : I I O0 MPa/650 OC Srie arospatiale crou bihexagonal, auto-freinant, en acier rsistant chaud FE-PA92HT (A286) non revtu Classification : 1 I O0 MPa/650 OC Luft- und Raumfahrt Zwlfkantmuttern
3、, selbstsichernd, aus hochwarmfestem stahl FE-PA92HT (A286) blank 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 conce
4、rned AECMA Commission following comment by the manufacturers of the 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. . Memb
5、er countries. Nota - Extra copies can be supplied by B.N.A.E. -8, rue Moreau-Vauthier - 92100 BOULOGNE-BILLANCOURT Edition approved for publication Comments should be sent within six months C8 Chairman after the date of oubiication decision 15 May 1986 A.E.C.M.A. Mr WILLIAMS 88, Bd. Malesherbes 7500
6、8 PARIS - FRANCE 03 aecma 1986 prEN2906 Page 3 Issue Pl 1 Scope and field of application This standard specifies the dimensi ns of self-locking, unplated bihexagonal nuts with MJ- thread in heat resisting steel F E-PA92-HT according to EN2399 for aerospace applications. Maximum test temperature of t
7、he material 650 OC. 2 References IS04095 Fasteners for aerospace construction - Bi-hexagonal wrenching configuration IS05855/1 Aerospace construction - MJ threads - Part 1: Basic profile IS05855/2 Aerospace construction - MJ threads - Part 2: Dimensions for bolts and nuts IS08788 Aerospace Fasteners
8、 - Tolerances of form and position for nuts (1) EN2399 Heat resisting steel FE-PA92-HT; Rm B 900 MPa, bars for forged bolts D 25 mm - Aerospace series EN2424 Identification marking of standard fasteners - Aerospace series EN3004 Aerospace series - Nuts, self-locking, material FE-PA92-HT, clacsif ica
9、tion 1100 MPa/650 OC - Technical specification (1) 3 Required characteristics 3.1 Configuration - Dimensions - Tolerances Configuration shall be in accordance with the figure; dimensions, tolerances (2) and masses shall conform with the figure and the table. Details of form, not stated are at the ma
10、nufac turers option. 3.2 Material Heat resisting steel FE-PA92-HT according to EN2399 3.3 Surface treatment None Previous page is blank (i) In preparation (2) In conforrnity with IS08788 for tolerances of form and position J max. KL min. inin. NY max. min. 050 060 il70 080 100 120 la0 MJ 508 -4H6H 5
11、,2 5,8 7 MJ 610 -4H5H 6,3 7,l 8 MJ 7x1,O -4H5H 7,3 8,l 9 MJ 810 -4H5H 8,3 9,l 10 MJ 10125 -4H5H 10,3 1191 12 MJ 12125 -4H5H 1293 13,l 14 IVlJ 1415 -4H5H 14,4 15,2 17 - prEN2906 Page 4 Issue PI Threads surface will be as achieved by 7 (y ) normal melhods of manufacture g configuration Ixl7m-p 6 place
12、s AAdy Remove sharp edges 0,l to 0,4 mm Figure - Configuration Table - Dimensions and masses Dimensions in millimetres Mass kg/1000 part max. M (4) min. H max. Z Code I Designation I inin. 1 rnax. 1 7 2 10,4 091 0,13 10,l 0,13 12,6 0,15 13 3,l 7,69 15 17,5 - - (i) Biiiexagonal configuration in confo
13、rmity with IS04095 over length IM (2) All forms of entry (radius or chamfer) optional within these limiting dimensions. (3) Thread in conforinity with IS05855 part 1 and part 2. In self-locking zone the tolerances apply before forming out of round. (4) Wrench pad engagement prEN2906 Page 5 Issue P 1
14、 Number of EN Standard 4 Designation Note: If necessary, the design code S9005 may be introduced between the description block and the identity block. 5 Marking Each bihexagonal nut shall be marked in accordance to EN2424, class A. 6 Technical specification The bihexagonal nuts shall conform to the requirements of EN3004.
