1、STD-AECMA PREN 9407-ENGL 1797 = LOL23Ll 00L92b4 779 = Edition approved for publication AECMA STANDARD NORME AECMA AECMA NORM C3 Chairman Comments should be sent within six months after the date of publication to prEN 4407 Edition P I November 1997 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE I
2、NDUSTRIES (AECMA) Gulledelle 94 - B-1200 BRUXELLES - Tel. (+32) 2 775 81 1 O - Fax. (+32) 2 775 81 1 1 ICs: 49.040.20 Descriptors: Aircraft industry, screw, hexagonal head screw, titanium alloy, specification, dimension, dimensional tolerance, surface treatment, designation, marking ENGLISH VERSION
3、Aerospace series Bolts, normal hexagonal head, threaded to head, in titanium alloy, aluminium IVD coated Classification: 1 100 MPa (at ambient temperature) / 425 OC Srie arospatiale Vis tte hexagonale normale, filetes jusqu proximit de la tte, Luft- und Raumfahrt Sechskantschrau ben, Gewinde annhern
4、d bis KoDf, en alliage de titane, revtues aluminium IVD Classification : 1 100 MPa ( temprature ambiante) I425 OC aus Titanlegierung, Aluminium IVD besc.;htet Klasse: 1 100 MPa (bei Raumtemperatur) 1425 OC This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA (The E
5、uropean Association of Aerospace Industries). 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 following comment by the Member countries. Subsequent to the publication of this Prestandard, the technica
6、l content shall not be changed 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 INPSI and formal agreement of the Official Services of the Member countries it
7、 will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. 1997-1 1-28 AECMA Gulledelle 94 B-1200 BRUXELLES I Mr Arena aecma 1997 STDmAECHA PREN 4LI07-ENGL 1777 LOL23LL 00Li-12b5 bOO Previous page is blank Page 3 prEN 4407: 1997 1 Scope This stan
8、dard specifies the characteristics of bolts, normal hexagonal head, threaded to head, in titanium alloy, aluminium IVD coated. Classification: 1 I00 MPa 1) / 425 OC 2) 2 Normative references IS0 3353 IS0 5855-2 IS0 7913 IS0 9152 EN 2000 EN 2424 TR 3775 MIL-C-83488C Aerospace - Rolled threads for bol
9、ts - Lead and runout requirements Aerospace - MJ threads - Part 2: Limit dimensions for bolts and nuts Aerospace - Botls and screws, metric - Tolerances of form and position Aerospace - Bolts, MJ threads, in titanium alloy, strength class 1 100 MPa - Procurement specification 3) Aerospace series - Q
10、uality assurance - EN aerospace products - Approval of the quality system of manufacturers Aerospace series - Marking of aerospace products Aerospace series - Bolts and pins - National materials 4) Coating, aluminium, ion vapor deposited 5) 3 Required characteristics 3.1 See figure 1 and table 1. Di
11、mensions and tolerances are expressed in millimetres and apply after surf ace treatment. Details of form not stated are left to the manufacturers discretion. Configuration - Dimensions - Masses 3.2 IS0 7913 Tolerances of form and position 1) Minimum tensile strength of the material at ambient temper
12、ature 2) Maximum temperature that the bolt can withstand without continuous change in its original characteristics, after return to ambient temperature. The maximum temperature is determined by the surface treatment. 3) In preparation at the date of publication of this standard 4) Published as AECMA
13、 Technical Report at the date of publication of this standard 5) Published by: Department of Defense (DOD), the Pentagon, Washington, D.C. 20301, U.S.A. 3.3 Materials TR 3775 (titanium alloy, strength class 1 100 MPa) 3.4 Surface treatment MIL-C-83488, Type II class 3, 4 pm to 12 pm After aluminium
14、deposit: - mechanical blasting, followed by a chromate conversion coating within 24 h max. 6) - optional lubrication with cethylic alcohol (code E) ?Y 171? Values in micrometres apply prior to surface treatment. Break sharp edges 0,l to 0,4. Marking Figure 1 6) Products used shall be in conformity w
15、ith material regulation into force. Page 5 prEN 4407: 1997 Table 1 Diameter Thread ) code I 6.4 3 - 7,6 040 MJ40,7 - 4h6h 6,4 - 050 MJ50,8 - 4h6h 7,4 5.25 7,4 3,4 1 8,7 I I I - 060 MJ6xl - 4h6h 9.4 6,25 9,3 4,2 070 MJ7xl -4h6h 10,3 7,25 10.2 5.2 O80 I MJ8xl - 4h6h I 12.3 I 8.25 I 12.2 I 6.2 I 100 MJ
16、101,25-4h6h 16,3 10.25 16 7,9 120 MJ121.25 -4h6h 18.3 12,25 18 9,s f 0,5 140 MJ141,5 -4h6h 21,3 14,25 21 11,5 160 MJ161,5 -4h6h 23,3 16,25 23 13,5 180 I MJ18x1,5 - 4h6h I 26,3 I 18.25 I 26 I 153 I 200 I MJ20x1,5 - 4h6h I 29.3 I 20.25 I 29 I 17,5 I - 24,5 26,8 30,2 33,6 F G H max. lo1 I 0.2 1,85 4,5
17、I 10 4,85 (concluded) 1) In accordance with IS0 5855-2 2) 03 rnax. shall be less than J. 3) Increments: 2 for L I100 4forL 100 4) If greater lengths are required, they shall be chosen using the above increments. The length code corresponds to the length L, completed by one or two zeros to the left,
18、where necessary, to obtain a three digit code. 5) Approximate values (kg/l O00 pieces), calculated on the basis of 4,45 kg/dm3, given for information purposes only. They apply to bolts without holes. 6) Value for head and first L 7) Increase for each additional 2 mm of L. STD-AECMA PREN 4407-ENGL 17
19、97 m LO123LL 00LLi2bB 3LT m Page 6 prEN 4407: 1997 Description block 4 Designation EXAMPLE: Identity block EN4407H050010 without NOTE: If necessary, the code 19005 shall be placed between the description block and the identity block. - (hyphen) Table 2 050 to 200 I Code I Holes I C + MJ with H 5 Marking See table 3 and figure 1, indented. Table 3 EN 2424 Style Diameter code I 030 and 040 I N I 6 Technical specification IS0 9152, except for: - Approval of manufacturers: see EN 2000; - Qualification of bolts: not applicable.
