ASD-STAN PREN 4499-1999 Aerospace Series Screws 100 Degree Countersunk Reduced Head Offset Cruciform Recess Close Tolerance Normal Shank Short Thread in Titanium Alloy Anodized wit.pdf

1、STDOAECMA PREN 4499-ENGL L999 LOL23LL 00L655L 643 111 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 B-1200 BRUXELLES prEN 4499 Edition P I September 1999 PUBLISHED BY TH

2、E EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMA) Gulledelle 94 - 8-1200 BRUXELLES - Tel. (+32) 2 775 81 1 O - 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 reduced head, offset cruciform recess, close tolerance normal shank, short thread, in titanium alloy, anodized, with aluminium pigmented coating

4、 Classification: 1 1 O0 MPa (at ambient temperature) / 31 5 OC Srie arospatiale Vis tte fraise 100“ rduite, 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 “

5、C Luft- und Raumfahrt 100“ Senk-Paschrauben, mit kleinem Kopf, mit Flgelkreuzschlitz, kurzes Gewinde, aus Titanlegierung, anodisiert, mit Aluminium pigmenttete Beschichtung Klasse: I 100 MPa (bei Raumtemperatur) I315 OC This “Aerospace Series“ Prestandard has been drawn up under the responsibility o

6、f AECMA (The European Association of Aerospace Industries). If is published on green paper for the needs of AECMA-Members. If has been technically approved by the experfs of the concerned Technical Committee following comment by the Member countries. Subsequent to the publication of this frestandard

7、, the technical content shall not be changed to an exfenf that interchangeability is affected, physically or functionally, withouf re-idenfification of the standard. Affer examinafion and signature of the AECMA Standard Checking Cenfre (NPS) and formal agreement of the Official Services of the Membe

8、r countries it will be submitted as a draft European Sfandard to CEN (European Committee for Standardizafion) 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 aecma 1999 STD-AE

9、CMA PREN 4499-ENGL L999 11111 1012311 0016552 5T BI Page 3 prEN 4499: 1999 1 Scope This standard specifies the characteristics of screws, 100“ countersunk reduced head, offset cruciform recess, close tolerance normal shank, short thread, in titanium alloy, anodized, with aluminium pigmented coating.

10、 Classification: 1 100 MPa / 315 “C *) 2 Normative references IS0 3353 IS0 5855-2 IS0 791 3 IS0 7994 IS0 9152 IS0 13921 EN 2000 EN 2424 EN 3042 EN 4016 EN 4474 MI L-L-871328 TR 3775 Aerospace - Rolled threads for bolts - Lead and runout requirements Aerospace - MJ threads - Part 2: Limit dimensions

11、for bolts and nuts Aerospace - Bolts and screws, metric - Tolerances of form and position Aerospace - Internal drive, offset cruciform recess (Torq-Set ) for rotary fastening devices - Metric series Aerospace - Bolts, with MJ threads, in titanium alloys, strength class 1 100 MPa - Procurement specif

12、ication Aerospace - Screws, 100“ reduced countersunk head, internal offset cruciform ribbed or unribbed drive, 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 series - Quality assurance -

13、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, Aerospace series - Aluminium pigmented coating - Coati

14、ng methods 3, Lubricant, Cetyl Alcohol, 1 -Hexadecanol, Application to Fasteners 4, Aerospace series - Bolts and pins - National materials 5, I) Minimum tensile strength of the material at ambient temperature 2) Maximum temperature that the screw can withstand without continuous change in its origin

15、al 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 (DoD), the Pentagon, Washington, D.C.20301, USA 5) Published as AECMA Te

16、chnical Report at the date of publication of this standard Previous page is blank Page 4 prEN 4499: 1999 3 Required characteristics 3.1 See figure 1 and table 1. Dimensions and tolerances are: in conformity with IS0 13921, expressed in millimetres and apply after coating (tolerance on shank diameter

17、 before coating is also specified). Details of form not stated are left to the manufacturers discretion. Configuration - Dimensions - Masses 3.2 IS0 7913 Tolerances of form and position 3.3 Materials TR 3775 (titanium alloy, strength class 1 100 MPa) 3.4 Surface treatments EN 4474 Lubrication with c

18、etylic alcohol (chlorine free) according to MIL-L-87132 STDOAECMA PREN 4499-ENGL 1999 II LOI12311 00Lb554 352 1111 Page 5 prEN 4499: 1999 050 T O001 STD*AECMA PREN 4499-ENGL 1799 Page 6 prEN 4499: 1999 q?j or N O0 I 7-r- r m e m O O ._ ii t. o e m In u) al 8 al c P 3 % - al O u) al N r, 2 4- M L O f

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21、 ._ m 9 I O0 I c .- u Y- 0- m Y- sr f WCQ c9 t t-a a hl d. Co O - W CQ“ 2 a Y- 9 * li E .- rn W II J e! c O c .- E - - ._ E - m S O U U .- e .- I Pr %-x CO%- O0 Coo 0- m c) m c I- 2 ti a;$ so 0 STDBAECMA PREN 4477-ENGL 1977 133111 LOL23LL 00Lb55b 125 Page 7 prEN 4499: 7999 Holes With 4 Designation E

22、XAMPLE: Code D Description block f Drive Code IS0 7994 R I Identity block IS0 7994 un rib bed SCREW EN4499D05001 O Number of this standard Hole code (see table 2) Diameter code (see table 1) Length code (see table 1) Drive code (see table 3) A NOTE If necessary, the code 19005 shall be placed betwee

23、n the description block and the identity block. 050 to 200 C + MJ I 5 Marking See table 4 and figure 1, indented. Table 4 1 Diameter code 040 EN 2424 Style STD-AECMA PREN 4477-ENGL 1999 m LO32333 O036557 06% 11111 Page 8 prEN 4499: 1999 6 Technical 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