AECMA PREN 4496-1999 Aerospace Series Screws 100 Degree Countersunk Normal Head Offset Cruciform Recess Close Tolerance Normal Shank Short Thread in Titanium Alloy Anodized with Al.pdf

1、STD-AECMA PREN 44Sb-ENGL L999 E LOL2333 0036532 791 H Edition approved for publication 1999-09-30 AECMA STANDARD NORME AECMA AECMA NORM Comments should be sent within six months after the date of publication to AECMA Gulledelle 94 8-1200 BRUXELLES prEN 4496 Edition P 1 September 1999 PUBLISHED BY TH

2、E EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMA) Gulledelle 94 - B-1200 BRUXELLES - Tel. (+32) 2 775 81 10 - Fax. (+32) 2 775 81 11 ICs: 49.030.20 Descriptors: aircraft industry, aircraft equipment, screw, countersunk head screw, cross recess screw, titanium alloy, screw thread, specification,

3、 characteristic, dimension, mass, dimensional tolerance, surface treatment, designation, marking ENGLISH VERSION Aerospace series Screws, 100“ countersunk normal head, offset cruciform recess, close tolerance normal shank, short thread, in titanium alloy, anodized, with aluminium pigmented coating C

4、lassification: 1 100 MPa (at ambient temperature) / 315 OC Srie arospatiale Vis tte fraise 100“ normale, empreinte cruciforme dporte, ft normal tolrance serre, filetage court, en alliage de titane, anodises, avec revtement alumino-organique Classification : I I00 MPa ( temprature ambiante) I315 “C L

5、uft- und Raumfahrt 100“ Senk-Paschrauben, mit Fliigelkreuzschlitz, kurzes Gewinde, aus Titanlegierung, anodisiert, mit Aluminium pigmenttete Beschichtung Klasse: 1 i00 MPa (bei Raumtemperatur) I315 “C This “Aerospace Series“ Prestandard has been drawn up under the responsibilify of AECMA (The Europe

6、an Association of Aerospace Industries). If is published on green paper for the needs of AECMA-Members. If has been technically approved by the experts of the concerned Technical Commiftee following comment by the Member countries. Subsequent to the publication of this Presfandard, the technical con

7、tent shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the sfandard. After examination and signature of the AECMA Standard Checking Centre (NPS) and formal agreement of the Official Services of the Member countries it will

8、 be submifted as a draff European Standard to CEN (European Commiffee for Standardization) for formal vote. Nota - Extra copies can be supplied by B.N.A.E. - Technopolis 54 - 199. rue Jean-Jacques Rousseau - 92138 ISSY-LES-MOULINEAUX CEDEX C3 Chairman Mr Visconti aecrna 1999 COPYRIGHT Association Eu

9、ropeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesSTD-AECMA PREN qYSb-ENGL LS99 LOL231L 0016533 628 Page 3 prEN 4496: 1999 i Scope This standard specifies the characteristics of screws, 100“ countersunk normal head, offset cruciform recess, close tolerance norma

10、l shank, short thread, in titanium alloy, anodized, with aluminium pigmented coating. Classification: 1 100 MPa 1) i 315 “C 4 2 Normative references IS0 3353 IS0 5855-2 IS0 5856 IS0 7913 IS0 7994 IS0 9152 EN 2000 EN 2424 EN 3042 EN 4016 EN 4474 M IL-L-87132B TR 3775 Aerospace - Rolled threads for bo

11、lts - Lead and runout requirements Aerospace - MJ threads - Part 2: Limit dimensions for bolts and nuts Aerospace - Screws, 100“ normal countersunk head, internal offset cruciform ribbed drive, normal shank, short or medium length MJ threads, metallic material, coated or uncoated, strength classes l

12、ess than or equal to 1 100 MPa - Dimensions Aerospace - Bolts and screws, metric - Tolerances of form and position Aerospace - Internal drive, offset cruciform recess (Torq-Set 8) for rotary fastening devices - Metric series Aerospace - Bolts, with MJ threads, in titanium alloys, strength class 1 10

13、0 MPa - Procurement specification 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 -

14、Oversized bolts 3) Aerospace series -Aluminium pigmented coating - Coating methods 3) Lubricant, Cetyl Alcohol, 1 -Hexadecanol, Application to Fasteners 4) Aerospace series - Bolts and pins - National materials 5) 1) Minimum tensile strength of the material at ambient temperature 2) Maximum temperat

15、ure that the screw can withstand without continuous change in its original characteristics, after return to ambient temperature. The maximum temperature is determined by the coating. 3) Published as AECMA Prestandard at the date of publication of this standard 4) Published by: Department of Defense

16、(DoD), the Pentagon, Washington, D.C.20301, USA 5) Published as AECMA Technical Report at the date of publication of this standard COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesSTD-AECMA PREN 449b-ENGL 1999 I LOL23LL 00Lb534 5b4 Page

17、4 prEN 4496: 1999 3 Required characteristics 3.1 Configuration - Dimensions - Masses See figure 1 and table 1. Dimensions and tolerances are: in conformity with IS0 5856, expressed in millimetres and apply after coating (tolerance on shank diameter before coating is also specified). Details of form

18、not stated are left to the manufacturers discretion. 3.2 IS0 7913 Tolerances of form and position 3.3 Materials TR 3775 (titanium alloy, strength class I 100 MPa) 3.4 Surface treatments EN 4474 Lubrication with cetyiic alcohol (chlorine free) according to MIL-L-87132 COPYRIGHT Association Europeene

19、Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesPage 5 prEN 4496: 1999 STD-AECMA PREN 499b-ENGL 1999 88 LOL23LL OOLb535 4T0 O CI .- 8 n t .- *- O O CI 7 0- m) O N) m x 7 I 3 050 7 0001 COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by

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23、 m K O U TJ m .- Y ._ II 7.r bo3 O0 bCo O0 I x$ O0 24 m a m 2 I- COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling Services4 EXAMPLE: Des ig na ti on Holes Description block Identity block SCREW EN4,496D050040 Number of this standard Hole code (s

24、ee table 2) Diameter code (see table 1) Length code (see table I) Drive code (see table 3) Code i Page 7 prEN 4496: 1999 Drive NOTE If necessary, the code 19005 shall be placed between the description block and the identity block. Code 1 With D 1 I IS0 7994 I R I IS0 7994 unribbed A 5 Marking See ta

25、ble 4 and figure 1, indented. Table 4 Diameter code I EN 2424 Style 03and 040 -7 N 1 050 to 200 I C + MJ i COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesSTD.AECMA PREN 4476-ENGL 1777 m 1012311 00Lb538 LOT H Page 8 prEN 4496: 1999 6 Te

26、chnical specification IS0 91 52, with the following modifications: 6.1 Approval of manufacturers EN 2000 6.2 Qualification of bolts EN 3042 6.3 Requirement deleted Double shear strength 7 Oversized bolts EN 4016 COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling Services