1、Edition approved for publication 16 February 1987 Comments should be sent within six months after the date of publication decision A.E.C. M .A. 88, Bd. Malesherbes 75008 PARIS - FRANCE C3 Chairman Mr ARENA Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS unde
2、r license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AECMA PREN2884 87 W 10L231L 0004301 L W - Previous page is blank Issue P 1 prEN2884 Page 3 1 Scope and field of application O This standard specifies the characteristics for bolts with pan recess,
3、coarse tolerance shank and short thread, in anodized tensile strength classification 1100 MPa, . for general purpose vehicle assemblies, where temperatures do not exceed 315 OC. 2 References IS0 3353, Aerospace construction - Rolled threads threads IS0 585511, Aerospace construction - MJ threads - P
4、ar IS0 585512, IS0 7913, IS0 7994, e EN2424, EN2491, EN2808, EN3051, EN3067, head, Torq-Set itanium alloy of use in airbone - Runout and lead 1 : Basic profile Aerospace construction - MJ threads - Part 2 : Dimensions for bolts and nuts Aerospace - Fasteners - Tolerances of form and position for bol
5、ts and screws Aerospace - Internal drive, Torq-Set offset cruciform recess for rotary fastening devices - Metric series Identification marking of standard fasteners - Aerospace series Aerospace series - Molybdenum disulfide solid film lubricants for application to removable fasteners in titanium, ti
6、tanium alloy, corrosion resisting steel and cadmium plating steel 1) Aerospace series - Anodizing of titanium and titanium alloy 1) Aerospace series - Substitute materials for bolts Bolts and screws, protruding and flush head, either with h12 tolerance shank or fully threaded, in titanium alloy of t
7、ensile strength - Classifications 900 and 1100 MPa - MJ threads - Technical specification 1) 3 Required cha racteri s t icc 3.1 Configuration - Dimensions - Tolerances The configuration shall be in accordance with the figure ; the dimensions and tolerances 2) shall conform with the values shown in t
8、he figure and in tables 1 and 2, after anodizing but before lubrication. 3.2 Surface roughness See figure. The values apply before anodizing and lubrication. 3.3 Materials Titanium alloy EN3051 3.4 Surface treatments Anodizing EN2808 Lubrication EN2491, 5 to 10 pn, 1) In preparation 2) In conformity
9、 with IS0 7913 for tolerances of form and position, except those marked *, see table 1. 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-,-,-Issue P 1 prEN2
10、884 Page 4 3j?/l#y O- Rolled Break sharp edges 0,l to 0,4 mm A (L 1D) B (L 1D) o ,081-1 I 1) Runout shall be measured at 1D. If (L-R) D measure at 0,5 (L-R). 2) N = L nom. + M - Figure - Configuration 7994 - Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS un
11、der license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-IA N H- l-4 O U p4- ?I O u a- $ + &O cl II 8 c l-4 O u 5:- m wrl m Y plop -.) O0 10 P I I I I I I I i i 1 o g/ w o o, h N O 2 O +I N P 5 Ii v) u &I (d a rn ln W rn v: H * 3 h u e O rw u C H d 8 r
12、 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-,-,-Issue P 1 prEN2884 Page 6 Table 2 - Dimensiona codes, lengths and masses Dimensions in millimetres Cop
13、yright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Issue P 1 prEN2884 Page 7 Table 2 - Dimensional codes, lengths and masses (continued) Dimensions in mi I I
14、 me tres i) Values apply to bolts without hole. 2) The preferred length ranqe lies within the bold lines, If greater lengths-are necessary they shall be chosen in steps of 2 mm for lengths L less than 100 mm and in multiples of 4 above 100 mm. The length code corresponds to the length L in millimere
15、s completed by a zero to the left, where necessary, to obtain a 3 digit code. 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 AECMA PREN2884
16、 87 m L0123LL 0004306 O Issue P 1 prEN2884 Page 8 Description block 4 Designation Each bolt shall only be designated as in the following example : I dent it y block Number of EN Standard 030 : Diameter code (see table 1) D : Locking code (see table 3) I table II Diameter code 030 and 040 Table 3 - L
17、ocking code Marking style D Split pin hole O - 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. Table 4 - Marking styles 050 to 120 B I 6 Technical specification EN3067. 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-,-,-
