1、STD-AECMA PREN 4498-ENGL 1999 LOL23LL 00Lb545 34T M Edition approved for publication Comments should be sent within six months after the date of publication to AECMA STANDARD NORME AECMA AECMA NORM C3 Chairman prEN 4498 Edition P I September 1999 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE IN
2、DUSTRIES (AECMA) Gulledelle 94 - B-1200 BRUXELLES - Tel. (+32) 2 775 8110 - Fax. (+32) 2 775 811 1 ICs: 49.030.20 Descriptors: aircraft industry, aircraft equipment, screw, hexagonal head screw, titanium alloy, screw thread, specification, characteristic, dimension, mass, dimensional tolerance, surf
3、ace treatment, designation, marking ENGLISH VERSION Aerospace series Bolts, large bihexagonal head, close tolerance normal shank, medium length thread, in heat resisting nickel base alloy, passivated, with aluminium pigmented coating Classification: I 550 MPa (at ambient temperature) / 315 “C Srie a
4、rospatiale Luft- und Raumfahrt Vis tte bihexagonale large, ft normal tolrance serre, filetage moyen, en alliage rsistant chaud base de nickel, pascives, avec revtement alumino-organique Classification : I 550 MPa ( temprature ambiante) I315 “C Sechskant-Pacchrau ben, mittlere Gewindelnge, aus hochwa
5、rmfester Nickelbasislegierung, passivsiert, mit Aluminium pigmenttete Beschichtung Klasse: 1 550 MPa (bei Raumtemperatur) I315 OC This %Aerospace Series“ Prestandard has been drawn up under the responsibilify of AECMA (The European Association of Aerospace Industries). It is published on green paper
6、 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 Prestandar, the technical content shall not be changed to an extent that interchangeability is affect
7、ed, 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 draft European Standard to CEN (European Committee fo
8、r Standardization) for formal vote. 1999-09-30 AECMA Gulledelle 94 B-1200 BRUXELLES Mr Visconti I aecma 1999 COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesSTD=AECMA PREN 4498-ENGL 5979 LOL23LL 00Lb54b 2Bb Page 3 prEN 4498: 1999 I Scop
9、e This standard specifies the characteristics of bolts, large bihexagonal head, close tolerance normal shank, medium length thread, in heat resisting nickel base alloy, passivated, with aluminium pigmented coating. Classification: 1 550 MPa l)/ 315 “C *) 2 Normative references IS0 3186 IS0 3353 IS0
10、4095 IS0 5855-2 IS0 7913 IS0 9154 EN 2000 EN 2424 EN 2516 EN 3042 EN 3769 EN 4016 EN 4474 MIL-L-87132B TR 3775 Aerospace - Bolts, large bihexagonal head, normal shank, short or medium length MJ threads, metallic material, coated or uncoated, strength classes 1 250 MPa to 1 800 MPa - Dimensions Aeros
11、pace - Rolled threads for bolts - Lead and runout requirements Aerospace - Bihexagonal drives - Wrenching configuration - Metric series Aerospace - MJ threads - Part 2: Limit dimensions for bolts and nuts Aerospace - Bolts and screws, metric - Tolerances of form and position Aerospace - Bolts, with
12、MJ threads, in heat resisting nickel base alloy, strength class I 550 MPa - Procurement specification 3, Aerospace series - Quality assurance - EN aerospace products - Approval of the quality system of manufacturers Aerospace series - Marking of aerospace products Aerospace series - Passivation of c
13、orrosion resisting steels and decontamination of nickel base alloys Aerospace series - Quality assurance - EN aerospace products - Qualification procedure Aerospace series - Electrolytic polishing of corrosion resistant steels and heat resisting alloys Aerospace series - Oversized bolts 4, Aerospace
14、 series - Aluminium pigmented coating - Coating methods 4, Lubricant, Cetyl Alcohol, I -Hexadecanol, Application to Fasteners 5, Aerospace series - Bolts and pins - National materials 6, 1) Minimum tensile strength of the material at ambient temperature 2) Maximum temperature that the bolt can withs
15、tand without continuous change in its original characteristics, after return to ambient temperature. The maximum temperature is determined by the coating. 3) In preparation at the date of publication of this standard 4) Published as AECMA Prestandard at the date of publication of this standard 5) Pu
16、blished by: Department of Defense (DoD), the Pentagon, Washington, D.C.20301, USA 6) Published as AECMA Technical Report at the date of publication of this standard PI-evious page is blank COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling Service
17、sSTD-AECMA PREN 4498-ENGL 1997 ais 1022311 0016547 LB2 Page 4 prEN 4498: 1999 3 Required characteristics 3.1 Configuration - Dimensions - Masses See figure 1 and table 1. Dimensions and tolerances are: in conformity with IS0 31 86, expressed in millimetres and apply after coating (tolerance on shank
18、 diameter before coating is also specified). Details of form not stated are left to the manufacturers discretion. 3.2 IS0 7913 Tolerances of form and position 3.3 Materials TR 3775 (heat resisting nickel base alloy, strength class I 550 MPa) 3.4 Surface treatments EN 2516 or EN 3769 on the head (exc
19、ept bearing face), then EN 2516 on all the bolt. In this case, code P shall be used in the designation, plus EN 4474. Lubrication with cetylic alcohol (chlorine free) according to MIL-L-87132 COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling Serv
20、icesSTD-AECMA PREN 4498-ENGL 1999 a 10123LL 0036548 059 m Page 5 prEN 4498: 1999 m N *4 I I .r 1 E l O01 I I T- e (u C oc CO n c .- COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesSTD-AECIA PREN 4498-ENGL 1999 .I LOL23LL 00Lb549 T95 Pag
21、e 6 prEN 4498: 1999 m c7J mN NI? O0 n -4 C ai u O o e .- 0 u a, 2 5 m c m O O .- n 5 2 o c u) W c W s= 2 3 m - W O u) O W N 5 c L B 2! O x u al a, Q n c - 5- J 5 20 + - t 2 - O m O O CO - 4 e - O O CO O O 4 c - a? in T - t-“ m - Q s $ NN li W O r -J O - c s .- B n u) O O 2, Q Q m 2. a, u - c - c - s
22、 S O m W u) O 3 Q S O m e ._ c E 2 e Lo K .- L %- 2 u) Y in Lc O u) m m Q a, S O u a, ._ 5 Y 0 E d C “! 0- +I I -j-o a O o 3 O0 ui N 9 O I li E 9 .- O m U W a, m E u) s= O S c - n - .- 3 E F z # c a, .- 5 E u 6 .- u m P 5 5 o al Q X al .c. in Co in ? 5 .- 3 ? YC XE c .- I 2 I (4 T- -?- O m c E .- %i
23、 .- a“ E “? T- T I 2% 99 O0 I II I Oin *in O0 0- 9 II m W O c m O m P o COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesSTDmAECNA PREN 4498-ENGL 1999 I LO32333 0036550 707 Page 7 prEN 4498: 1999 Number of this standard 4 EXAMPLE: Des ig
24、 na ti on Hole code (see table 2) Diameter code (see table 1) Description block I Identity block Holes Code I NOTE If necessary, the code 19005 shall be placed between the description block and the identity block. 1 With H 5 Marking EN 2424, style C plus MJ, indented (see figure 1). 6 Technical specification IS0 91 54, except for clauses: - Approval of manufacturers: see EN 2000; - Qualification of bolts: see EN 3042. 7 Oversized bolts EN 4016 COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling Services
