1、F- - x AECMA PREN2885 87 W LOL23Ll - OOOq307 2 _- W A A. E. C. M .A. STAN DAR D prEN2885 NORME A.E.C.M.A. issue P 1 A.E.C.M.A. NORM February 1987 DIT PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATERIEL AROSPATIAL 88, boulevard Malesherbes, 75008 PARIS -TL. 45-63-82-85 UDC : Key words : ENGLISH
2、VERSION Aerospace series Bolts, pan head, Torq-Set recess, coarse tolerance shank, short thread, in steel, cadmium plated Classification : 900 MPa/235 OC Srie arospatiale Luft- und Raumfahrt Vis tte cylindrique, Flachkopfschrauben mit Flgelkreuzschlitz , kurzes Gewinde, aus Stahl, verkadmet Klasse :
3、 900 MPa/235 OC empreinte Torq-Set , tige tolrances larges, filetage court, en acier cadmi Classification : 900 MPa/235 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 appro
4、ved by the experts of the concerned AECMA Commission following comment by the manufacturers of the . Member countries. After examination and signature of the AECMA Standard Checking Centre (NPS) and formal agreement of the Officiai Services of the Member countries it will be published in its final v
5、ersion on yellow paper as an AECMA Standard. Nota - Extra copies can be supplied by B.N.A.E. - 8, tue Moreau-Vauthier - 92100 BOULOGNE-BILLANCOURT Edition approved for publication Comments should be sent within six months C3 Chairman after the date of publication decision 88, Bd. Malesherbes 16 Febr
6、uary 1987 A.E.C.M.A. Mr ARENA 75008 PARIS - FRANCE aecma 1987 AECMA PREN2885 87 Loi12311 0004308 i.I m Issue P 1 prEN2885 Page 3 1 Scope and field of application 0 This standard specifies the characteristics for bolts with pan head, Torq-Set recess, coarse tolerance shank and short thread, in cadmiu
7、m plated steel of tensile strength classification 900 MPa, for general purpose use in airborne vehicle assemblies. The cadmium plating restricts the application to temperatures not exceeding 235 OC. 2 References IS0 3353, IS0 5855/1, IS0 585512, IS0 7913, IS0 7994, 0 EN2133, EN2205, EN2424, EN2438,
8、EN2444, EN3051, EN3066, Aerospace construction - Rolled threads - Runout and lead th reads Aerospace construction - MJ threads - Part 1 : Basic profile Aerospace construction - MJ threads - Part 2 : Dimensions for bolts and nuts Aerospace fasteners - Tolerances of form and position for bolts and scr
9、ews Aerospace - Internal drive, Torq-Set offset cruciform recess for rotary fastening devices - Metric series Cadmium plating of steels with maximum specified tensile strength equal to or less than 1450 MPa and copper and copper alloys - Aerospace series Steel FE-PL43S - 900 MPa Rm 1100 MPa - Bars D
10、e 40 mm - Aerospace series Identification marking of standard fasteners - Aerospace series Steel FE-PL62 - 900 MPa Rm 1100 MPa - Bars De 40 mm - Aerospace series Steel FE-PL711 - 900 MPa Rm - 1100 MPa - Bars and wires De 45 mm - Aerospace sezes Aerospace series - Substitute materials for bolts Bolts
11、 and screws, protruding and flush head, either with hT2 tolerance shank or fully threaded, in steel of tensile strength classifications 600, 900 and 1100 MPa - MJ threads - Technical specification 1) - - - - - - 3 Required characteristics 3.1 The configuration shall be in accordance with the figure
12、; the dimensions and tolerances 2) shall conform with the values shown in the figure and in tables 1 and 2, after cadmium plating. See figure. The values apply before cadmium plating. 3.3 Materials 3) Steel : EN2205 or EN2438 or EN2444. Configuration - Dimensions - Tolerances - 3.2 Surface roughness
13、 3.4 Surface treatments Cadmium plating EN2133, 8 to 14 pm These values shall apply to all surfaces which can be contacted by a 20 mm diameter ball. On all other surfaces, a continuous deposit shall be present, although no minimum value is specified. i) in preparation 2) In conformity with IS0 7913
14、for tolerances of form and position, except those marked *, see table 1. 3) Substitute materials are given in EN3051. 0 7 /pl Previous page is blank AECMA PREN2885 87 W L01i23LL 0009309 b Issue P 1 prEN2885 Page 4 Break sharp edges 0,l to 0,4 mrn N - + 0,3 2) I . 1 1 hole G optional +-=- 1) Runout s
15、hall be measured at 1D. If (L-R) - I3 measure at 0,5 (L-RI, 2) N = L nom. + M Figure - Configuration I ri Q) 4 I- Issue P 1 prEN2885 Page 5 - AECMA PREN28B5 87 W LOL23LL 00043LL 4 W Issue P 1 . prEN2885 Page 6 Table 2 - Dimensional codes, lengths and masses Dimensions in millimetres , Iliameter .Ode
16、 030 I 040 I 050 I 060 I 070 I 080 I 1 O0 120 Length 2) L+0,2 Code 27 Mass ) (7,85 kg/dm3)- kg/lOOO pieces issue P 1 prEN2885 Page 7 Table 2 - Dimensional codes, lengths and masses (continued) Dimensions in millimetres Diameter Ode 030 I 040 I 050 I 060 I 070 I 080 I 100 I 120 ength 2) L+0,2 Code -2
17、 1 Mass ) (7,85 kg/dm3)- kg/lOOO pieces 1) Values apply to bolts without hole. 2) The preferred length range lies within the bold lines. If greater lengths are necessary they shall be chosen in steps of 2 mn for lengths L less than 100 mm and in multiples of 4 above. The lengti code corresponds to t
18、he length L in millimetres completed by a zero to the left, where necessary, to obtain a 3 digit code. ,AECMA PREN2885 87 LOL23LL OOOLI313 8 W Issue P 1 prEN2885 Page 8 Option Split pin hole No split pin hole 4 Designation Each bolt shall only be designated as in the following example : Locking code
19、 D - Description block Diameter code 030 and 040 050 to 120 I den ti ty block Marking style D B BOLT, PAN HEAD I Number of EN Standard D I Locking code (see table 3) 030 : Diameter code (see table 1) O10 : Length code (see table 2) Table 3 - Locking code Note : If necessary the originator code S9005 may be introduced between the description block and the identity block. 5 Marking Each bolt shall be marked in the position shown in the figure in accordance with the styles shown in table 4 as defined by EN2424. 6 Technical specification EN3066
