1、 STD=AECMA PREN 4073-ENGL 3999 30L2311, 0037230 Ob3 Edition approved for publication 1999-1 1-30 AECMA STANDARD NORME AECMA AECMA NORM C3 Chairman Mr Visconti Comments should be sent within six months afler the date of publication to AECMA Gulledelle 94 8-1200 BRUXELLES prEN 4071 Edition P 2 Novembe
2、r 1999 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AEGMA) Gulledelle 94 - 8-1200 BRUXELLES - Tel. (+32) 2 775 81 10 - Fax. (+32) 2 775 81 11 ICs: 49.030.20 Supersedes edition P 1 October 1994 Descriptors: aircraft industry, aircraft equipment, screw, hexagonal head screw, titanium
3、 alloy, screw thread, specification, characteristic, dimension, mass, dimensional tolerance, surface treatment, designation, marking ENGLISH VERSION Aerospace series Bolts, normal hexagonal head, close tolerance normal shank, short thread, in titanium alloy, aluminium IVD coated Classification: 1 10
4、0 MPa (at ambient temperature) / 425 OC Srie arospatiale Luft- und Raumfahrt Vis tte hexagonale normale, ft normal tolrance serre, filetage court, en alliage de titane, revtues aluminium IVD Classification : I 100 MPa ( temprature ambiante) I425 OC Sechskant-Paschrauben, kurzes Gewinde, aus Titanleg
5、ierung, Aluminium IVD beschichtet Klasse: 1 100 MPa (bei Raumtemperatur) I425 OC This “Aerospace Series” Prestandard has been drawn up under the responsibility of AECMA (The European Association of Aerospace Industries). It is published on green paper for the needs of AECMA-Members. It has been tech
6、nically approved by the experts of the concerned Technical Committee following comment by the Member countries. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-ident
7、ification 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 draft European Standard to CEN (European Committee for Standardization) for formal vote. STD*AECMA PR
8、EN 4071-ENGL 1999 LO123LL OOL723L TTT W Page 3 prEN 4071: 1999 i Scope This standard specifies the Characteristics of bolts, normal hexagonal head, close tolerance normal shank, short thread, in titanium alloy, aluminium IVD coated. Classification: 1 100 MPa 1) / 425 “C 2) 2 Normative references IS0
9、 3193 IS0 3353 IS0 5855-2 IS0 7913 IS0 9152 EN 2000 EN 2424 EN 3042 EN 4016 TR 3775 MI L-C-83488C Aerospace - Bolts, normal hexagonal head, normal shank, short or medium length MJ threads, metallic material, coated or uncoated, strength classes less than or equal to 1 100 MPa - Dimensions Aerospace
10、- Rolled threads for bolts - 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 - Bolts, with MJ threads, in titanium alloys, strength class 1 100 MPa - Procurement specifi
11、cation Aerospace series - Quality assurance - EN aerospace products - Approval of the quality system of manufacturers Aerospace series - Marking of aerospace products Aerospace series - Quality assurance - EN aerospace products - Qualification procedure Aerospace series - Oversized bolts 3) Aerospac
12、e series - Bolts and pins - National materials 4) Coatina. aluminium. ion vaDor deDosited 5) 1) Minimum tensile strength of the material at ambient temperature 2) Maximum temperature that the bolt can withstand without continuous change in its original characteristics, after return to ambient temper
13、ature. The maximum temperature is determined by the surface treatment. 3) Published as AECMA Prestandard at the date of publication of this standard 4) Published as AECMA Technical Repoit at the date of publication of this standard 5) Published by: Department of Defense (DoD), the Pentagon, Washingt
14、on,DC 20301, U.S.A. STD-AECMA PREN 4071-ENGL 1999 m 3012311 0037232 93b Page 4 prN 4071 : 1999 3 Required characteristics 3.1 Configuration - Dimensions - Masses See figure 1 and table I. Dimensions and tolerances are: in conformity with IS0 3193, expressed in millimetres and apply after surface tre
15、atment. Details of form not stated are left to the manufacturers discretion. 3.2 IS0 791 3 Tolerances of form and position 3.3 Materials TR 3775 (titanium alloy, strength class I 100 MPa) 3.4 Surface treatment MIL-C-83488, Type II, class 3, 4 pm to 12 pm After aluminium deposit: - mechanical blastin
16、g, followed by a chromate conversion coating within 24 h max. 6); - optional lubrication with cethylic alcohol (code E). 6) Products used shall be in conformity with national regulations into force. STDUAECMA PREN 4071-ENGL 1999 m 1012331 0037233 872 m Page 5 prEN 4071: 1999 c c Q) m E L c - a, 0 L
17、3 u) O Y L O .- a A O- m / I;I 54 I I _I_ La 0 0- C +i 4. . Ia 0 4 Y m N) c3 m L STD.AECMA PREN 4073-ENGL 3999 30L2333 0037234 709 Page 6 prEN 4071 : 1999 N O I (3 oc I C ._ E u.- n E *? O m 6: $5 m rq O - N m o Ob- I III II I wt- 1: O0 (DI- O0 STD-AECMA PREN 4071-ENGL 1999 = 1012311 0017235 b45 = P
18、age 7 prEN 4071 : I999 o- o- o 0- F 8 m-ra O u) c 2 8 O 2 al S O x v al al n - 2 o 7 4 m 8 al O u) U C O Q u) O o al v O o 0- +I c N -ja U O o Y - io -J- $ S S STD-AECMA PREN 4073-ENGL 3999 = 3032333 0037236 583 9 Page 8 prEN 4071 : 1999 Description block 4 Designation EXAMPLE: Identity block I- Num
19、ber of this standard Hole code (see table 2) Diameter code (see table 1) NOTE If necessary, the code 19005 shall be placed between the description block and the identity block. Table 2 Holes Lockwi re Code H I Split pin I D I 030 and 040 050 to 200 5 Marking See table 3 and figure 1, indented. N C+MJ Table 3 Diameter code I EN 2424 Style 6 Technical specification IS0 91 52, with the following modifications: 6. i Approval of manufacturers EN 2000 6.2 Qualification of bolts EN 3042 6.3 Requirement deleted Double shear strength 7 Oversized bolts EN 4016
