1、 CEN PRENa40ib 94 3404589 0066234 Lbb = AECMA STANDARD NORME AECMA AECMA NORM prEN 4076 Edition P 1 July 1994 EDITE PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATERIEL AROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cedex - Tl. (I) 47.36.98.76 UDC : Descrip
2、tors ENGLISH VERSION Aerospace series Screws, pan head, slotted, threaded to head, in corrosion resisting steel, passivated Classification : 490 MPa (at ambient temperature) / 425 OC Srie arospatiale Luft- und Raumfahrt Vis tte cylindrique fendue, filetes jusqu proximit de la tte, en acier rsistant
3、la corrosion, passives Classification : 490 MPa ( temprature ambiante) 1425 OC Flachkopfschrauben mit Schlitz, Gewinde annhernd bis Kopf, aus korrosionsbestndigem Stahl, passiviert Klasse : 490 MPa (bei Raumtemperatur) 1425 OC This “Aerospace Series“ Prestandard has been drawn up under the responsib
4、ility of AECMA (Association Europenne des Constructeurs de Matriel Arospatial). It is published on green paper for the needs of AECMA-Members. It has been technically approved by the experts of the concerned Technical Committee folio wing comment by the Member countries. Subsequent to the publicatio
5、n of this prestandard, the technical content shall not be changed to an extent that interchangeability is affected, ph ysically or functionally, without re-identification of the standard. After examination and signature of the AECMA Standard Checking Centre (NPS) 2nd formal agreement of the Official
6、 Services of the Member countries it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. Nota - Extra copies can be supplied by B.N.A.E. - Technopolis 54 - 199, rue Jean-Jacques Rousseau - 921 38 ISSY-LES-MOULINEAUX CEDEX C3 Chairman I Comm
7、ents should be sent within six months after the date of Dublication to I Edition approved for publication 1994-07-08 AECMA Technopolis - 175, rue Jean-Jacques Rousseau 921 38 Issy-les-Moulineaux Cedex - FRANCE Mr Arena I aecma 199L CEN PREN*4076 94 3404569 0066235 OT2 m Page 3 prEN 4076 : 1994 1 Sco
8、pe This standard specifies the characteristics of screws, pan head, slotted, threaded to head, in corrosion resisting steel, passivated. Classification : 490 MPa 1) / 425 OC 2) 2 Normative references IS0 3353 IS0 5855-2 IS0 7913 EN 2000 EN 2424 EN 2516 TR 3775 Aerospace - Rolled threads for bolts -
9、Lead and runout requirements Aerospace - MJ threads - Part 2 : Limit dimensions for bolts and nuts Aerospace - Bolts and screws, metric - Tolerances of form and position Aerospace series - Quality assurance - EN aerospace products - Approval of the quality system of manufacturers Aerospace series -
10、Marking of aerospace products 3) Aersopace series - Passivation of corrosion resistant steels and decontamination of nickel base alloys 4) Aerospace series - Bolts and pins - National materials 5) 3 Required characteristics 3.1 See figure 1 and table 1. Dimensions and tolerances are expressed in mil
11、limetres and apply after surface treatment. Configuration - Dimensions - Masses 3.2 IS0 7913 and with those specified in figure 1 and table 1 3.3 Materials TR 3775 (corrosion resisting steel, classification : 490 MPa) Tolerances of form and position 3.4 Surface treatment EN 2516 1) Minimum tensile s
12、trength of the material at ambient temperature 2) Maximum temperature that the screw can withstand without continuous change in its original characteristics, after return to ambient temperature. The maximum temperature is determined by the surface treatment. 3) Published as AECMA Standard at the dat
13、e of publication of this standard 4) In preparation at the date of publication of this standard 51 Published as AECMA Technical Report at the date of publication of this standard Previous page is blank CEN PREN*407b 94 m 3404589 006623b T39 = Page 4 prEN 4076 : 1994 y y Values in micrometres apply p
14、rior to surface treatment. Break sharp edges 0,l to 0,4 1) Shape optional Figure 1 Page 5 prEN 4076 : 1994 040 050 Table 1 MJ40.7 - 4h6h 8 6,7 3 2,4 MJ50,8 - 4h6h 10 8,7 3,4 3 Diameter Thread code I - 0,3 060 016 I MJ1,6x0,35 -4h6h I 3,2 O - 0,3 MJ6xl -4h6h 12 10,7 4,2 * Of5 3.6 O20 IMJZx0,4-4h6h I
15、4 040 050 060 025 IMJ2,5x0,45-4h6h I 5 006 to 056 6 to 56 1,6 02 1,29 0,15 008 to 070 8 to 70 03 2 03 0.25 2,61 0,25 O10 to 084 10 to 84 0,7 2,4 0,6 03 4.54 0,35 030 IMJ3x0.5-4h6h I 6 035 I MJ3,5x0,6-4h6h I 7 TOI. O - 0,2 I - I - 0,5 0,5 0,55 0,6 0,6 0,65 + 0,15 0,7 0,7 0,85 0 0,8 0.8 0,95 1 1 1 ,O5
16、 1,2 1,2 1,25 1,5 1.5 1,65 0 + 0,25 CEN PRENx407b 94 H 3404589 00bb238 801 Description block SCREW Page 6 prEN 4076 : 1994 Identity block EN4076-02001 O 4 Designation EXAMPLE : Diameter code EN 2424 Style Diameter code (see table 1) Length code (see table 1) J NOTE : If necessary, the code 19005 sha
17、ll be placed between the description block and the identity block. 5 Marking See table 2 and figure 1. Table 2 I 016 to 035 I G I I 040to060 I F I 6 Approval of manufacturers EN 2000 7 Packaging and labelling 7.1 Packaging It shall prevent any damage or corrosion occuring during handling and transportation. Each package shall only contain screws of the same identity block, and taken from the same inspection batch. 7.2 Labelling Each package shall bear a label on which the identity block, quantity, production batch number and inspectors stamp have been recorded.
