1、I* AECF1A - PREN3038 87 - 10323Ll 0004733 4 _ = , Edition approved for publication Comments should be sent within six months after the date of publication decision 88, Bd. Malesherbes 16 February 1987 A.E.C.M.A. 75008 PARIS - FRANCE A. E.C. M .A. STAN DARD NORME A.E.C.M.A. A.E.C.M.A. NORM C3 Chairma
2、n Mr ARENA prEN3038 Issue P 1 February 1987 DIT PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL 88, boulevard Malesherbes, 75008 PARIS - TL. 45-63-82-85 UDC : Key words ENGLISH VERSION Aerospace series Bolts, pan head, Torq-Set recess, close tolerance shank, short thread, corrosio
3、n resisting steel, passivated Classification : 1 I00 MPa/425 OC Srie arospatiale Luft- und Raumfahrt Vis tte cylindrique, Flachkopfpapschrauben empreinte Torq-Set , tige tolrances serres, filetage court, en acier rsistant la corrosion, passiv Classification : 1 1 O0 MPa/425 OC mit Flugelkreuzschlitz
4、 , kurzes Gewinde, aus hochwarmfestem Stahl, passiviert Klasse : 1 1 O0 MPa/425 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 AECM
5、A Commission following comment by the manufacturers of the Member countries. After examination and signature of the AECMA Standard Checking Centre (NFS 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
6、. . Previ o u :- LI I Scope This standard specifies the characteristics for bolts with pan head, Torq-Set recess, close tolerance shank and short Lthread in passivated corrosion resisting steel of tensile strength classification 1100 MPa. 2 Field of application These bolts are intended for use in ai
7、rcraft assemblies in which the fasteners are subjected principally to shear load, for temperatures not exceeding 425 OC. 3 References IS0 3353, Aerospace construction - Rolled threads - Runout and lead IS0 585511, Aerospace construction - MJ threads - Part 1 : Basic profile IS0 5855/2, Aerospace con
8、struction - MJ threads - Part 2 : Dimensions for bolts and nuts Aerospace - Fasteners - Tolerances of form and position for bolts and screws Aerospace - Internal drive, Torq-Set 8 offset cruciform recess for rotary fastening devices - Metric series threads * IS0 7913, IS0 7994, IS0 8168, Fasteners f
9、or aerospace - Stainless steel protruding and flush head bolts with a specified minimum tensile strength of 1100 MPa - MJ threads - Technical specification 1) EN2000, Aerospace series - Quality assurance requirements for the manufacture and procurement of EN aerospace standard products. Identificati
10、on marking of standard fasteners - Aerospace series Aerospace series - Passivation of corrosion resistant steels 1) Aerospace series - Substitute materials for bolts EN2424, EN2516, EN3051, 4 Required characteristics 4.1 Configuration - Dimensions - Tolerances The configuration shall be in accordanc
11、e with the figure ; the dimensions and tolerances 2) shall conform with the values shown in the figure and in tables 1 and 2, after passivation. 4.2 Surface roughness See figure. The values apply before passivation. 4.3 Materials Stainless steel EN3051 4.4 Surface treatments Passivation EN251 6. 1)
12、In preparation 2) In conformity with IS0 7913 for tolerances of form and position, except those marked *, see table 1. AECMA PREN3038 87 = 1012311 0004733 8 1 Issue P 1 prEN3038 Page 4 3q ,oy og 0Q-l Rolled Break sharp edges0,l to 0,4 mm Im_3. A (L / 1D) a Markina , Exkernal diameter diameter - 0,02
13、5 Max: actual plain shank .e Min: defined by 6h tolerance (see table i) 1) Runout shall be measured at in. If (L-R) O0 / 7 o, 95 2,13 3,92 6,36 10,27 13,94 26,35 !45,28 - - - O50 50 _ . _ - - . O52 Dimensions in mi II met res I o54 54 056 56 O58 58 O60 60 062 62 - 064 _I- _I_ 66 066 _-_- - 17,20 25,
14、06 33,21 56,48 88,78 1764 25,66 34,OO 57,71 90,56 - _ 18,8 126,27 34,79 58,94 92,33 _ -_- 26,87 35,57 60,17 j94,11 64-:- -_ - -. - - - - -_ 27,48 _ I_.- 36,36 _ 61,40 95,88 - _ - - - - _- 28,08 37,15 62,63 97,66 - _I 068 68 28.68-37,93 63,86 99,43 Table 2 - Dimensional codes, lengths and masses (con
15、tinued) O Dimensions in rnillintetres 8 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 mm for lengths L less than 100 mm and in multiples of 4 above 100 mm. The length cade correspon
16、ds to the length L in millimetres completed by a zero to the left, where necessary, to obtain a 3 digit code. AECMA PREN3038 87 = LOL231L OOOLi737 5 Issue P 1 prEN3038 Page 8 Option Split pin hole 5 Designation Each bolt shall only be designated as in the following example : Locking code D Descripti
17、on block No split pin hole Identity block - BOLT, PAN HEAD EN3038D03001 I Number of EN Standard D : Locking code (see table 3) 030 : Diameter code (see table i) O10 : Length code (see table 2) 030 and 040 050 to 120 Table 3 - Locking code D B Note : If necessary the originator code S9005 may be intr
18、oduced between the description block and the identity block. 6 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 EN2924. Table 4 - Marking styles Diameter code Marking style I 7 Technical specification Conforming to IS0 9153 except for quality assurance requirements - See EN2000.
