1、AECMA STANDARD NORME AECMA AECMA NORM Edition approved for publication 1994-07-08 prEN 4073 Edition P 1 July 1994 Comments should be sent within six months after the date of publication to AECMA Technopolis - 175, rue Jean-Jacques Rousseau 921 38 Issy-les-Moulineaux Cedex - FRANCE C3 Chairman Mr Are
2、na DIT PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cedex - Tl. (1) 47.36.98.76 UDC : Descriptors : ENGLISH VERSION Aerospace series Screws, pan head, six lobe recess, coarse tolerance normal shank, medi
3、um length thread, in alloy steel, cadmium plated Classification : 1 100 MPa (at ambient temperature) / 235 OC Srie arospatiale Vis tte cylindrique, empreinte six lobes, tige normale tolrance large, filetage moyen, en acier alli, cadmies Classification : 1 100 MPa ( temprature ambiante) / 235 OC Luft
4、- und Raumfahrt Flachkopf schrau ben, mit Sechs-Bogenzahn, mit mittlerer Gewindelnge, aus legiertem Stahl, verkadmet Klasse : 1 100 MPa (bei Raumtemperaturl / 235 OC This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA (Association Europenne des Constructeurs de Ma
5、triel 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 publication of this prestandard, the technical content shall not be cha
6、nged to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. 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 submitted as a dr
7、aft European Standard to CEN (European Committee for Standardization) for formal vote. aecma 1994 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-,-,-CEN P
8、RENr4073 94 3404569 00bb225 $53 Page 3 prEN 4073 : 1994 i Scope This standard specifies the characteristics of screws, pan head, six lobe recess, coarse tolerance normal shank, medium length thread, in alloy steel, cadmium plated. Classification : 1 100 MPa 1) / 235 OC 2) 2 Normative references IS0
9、3353 IS0 5855-2 IS0 7689 IS0 7913 EN 2000 EN 2133 EN 2424 EN 3042 EN 3911 TR 3775 NAS 1800-90 Aerospace - Rolled threads for bolts - Lead and runout requirements Aerospace - MJ threads - Part 2 : Limit dimensions for bolts and nuts Aerospace - Alloy steel bolts with strength classification 1 100 MPa
10、 and MJ threads - Procurement specification Aerospace - Bolts and screws, metric - Tolerances of form and position Aerospace series - Quality assurance - EN aerospace products - Approval of the quality system of manufacturers Cadmium plating of steels with maximum specified tensile strength equal to
11、 or less than 1 450 MPa and copper and copper alloys - Aerospace series 3) Aerospace series - Marking of aerospace products 3) Aerospace series - Quality assurance - EN aerospace products - Qualification procedure Aerospace series - Six lobe recess - Geometrical definition 4) Aerospace series - Bolt
12、s and pins - National materials 5) Recess, Six Lobe Drive - Internal - Dimensions for Recess and Gages 6) 1) Minimum tensile strength of the material at ambient temperature 2) Maximum temperature that the screw can withstand without continuous change in its original characteristics, after return to
13、ambient temperature. The maximum temperature is determined by the surface treatment. 3) Published as AECMA Standard at the date of publication of this standard 4) Published as AECMA Prestandard at the date of publication of this standard 5) Published as AECMA Technical Report at the date of publicat
14、ion of this standard 6) Published by : Aerospace Industries Association of America, Inc, 1250 Eye street, NW Washington, DC 20005, United States Previous page is blank Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo r
15、eproduction or networking permitted without license from IHS-,-,-CEN PRENs4073 74 3404589 0066226 07T m Page 4 prEN 4073 : 1994 3 Required characteristics 3.1 See figure 1 and table 1. Dimensions and tolerances are expressed in millimetres and apply after surface treatment. Configuration - Dimension
16、s - Masses 3.2 IS0 7913 and those specified in figure 1 and table 1 Tolerances of form and position 3.3 Materiais TR 3775 (alloy steel, classification 1 100 MPa) 3.4 Surface treatment EN 2133, 8 pm to 14 pm, on all surfaces which can be contacted by a 20 mm diameter ball. On all other surfaces, a co
17、ntinuous deposit shall be present, but no value is specified. Black colour option : code B 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-,-,-CEN PRENu407
18、3 94 3404569 O066227 T2b - m C O Q O .- c 0“ O m v al O r - - t Page 5 prEN 4073 : 1994 8 c I 0 o 9 I I - O O N O O Lo O a U O U e ln 8 c al .- m U O C O L .i- .- - L! 3 Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo
19、 reproduction or networking permitted without license from IHS-,-,-CEN PRENx4073 9U = 3Y0458 0066228 962 Diameter code 030 Thread ) Dl 02 03 h12 h13 nom. TOI. MJ30,5 - 4h6h 3 5,5 2,3 O 040 050 MJ40,7-4h6h 4 7 3 -0,5 MJ50,8 - 4h6h 5 8,5 3,4 060 080 MJ6xl - 4h6h 6 10 4,2 MJ8xl - 4h6h 8 13 6,2 f 0.5 10
20、0 120 MJIOx1,25-4h6h 10 16 7,9 MJ121,25 -4h6h 12 18 9.8 040 030 - T1 O 1,04 0,055 1,4 002 to040 2 to 40 10 6 25 I - 2,26 0,l 0,4 I 02 - 0,9 002 to 030 2 to 30 7.5 - 050 1,6 003 to050 Page 6 prEN 4073 : 1994 Table 1 - G min. H13 max. H13 x F TOI. H O + 0,2 3 4 - O + 0,3 O + 0.5 - 1,4 h14 12 15r331 i,
21、6 l-!?!-l 2,4 17.23 13.8 5 6 (concluded) i; 1 K 1 LI f 0,i 2, 3, f 0.1 Length code nom. L2 Recess Mass 4, EN 391 1 NAS 1800 I L3 I rnax.ymin. 1 1 code I number I 5) I 6) I I 3to 50 12 14 - 4,55 0,153 0,222 6,95 3to 60 -1 2,4 006 to 120 16.5 20,5 - 15,44 0,395 0.61 6 4to 80 5 to 100 10,5 T5 O T55 0,6
22、 29,3 6 to 120 22,5 43,l 0,887 1) In accordance with IS0 5855-2 2) Increments : 1 for L1 I30 2 for 30 100 3) If greater lengths are required, they shall be chosen using the above increments. The length code corresponds to the length i, completed by one or two zeros to the left, where necessary, to o
23、btain a three digit code. 4) Approximate values (kg/1 O00 pieces), calculated on the basis of 7,85 kg/dmJ, given for information purposes only. They apply to screws without holes. 5) Value for head and first 4 6) Increase for each additional millimetre of L4. Copyright Association Europeene des Cons
24、tructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-CEN PREN*4073 94 m 3404589 0066229 AT9 m Description block Page 7 prEN 4073 : 1994 Identity block EN4073H050040 4 Designation EXAMPLE : Number
25、of this standard Length Diameter Hole code code code (see (see (see table table table 2) 1) 1- 1 ) Holes Loc kwi re Split pin Lockwire and split pin No hole NOTE : If necessary, the code 19005 shall be placed between the description block and the identity block. Code H D C - (hyphen) Table 2 030 and
26、 040 050 to 120 N B 5 Marking See table 3 and figure 1. Table 3 EN 2424 Style Diameter code 6 Technical specification IS0 7689, except for clauses : - Approval of manufacturers : see EN 2000 ; - Qualification of bolts : see EN 3042. 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-,-,-
