AECMA PREN 4072-1999 Aerospace Series Screws 100 Degrees Countersunk Normal Head Offset Cruciform Recess Close Tolerance Normal Shank Short Thread in Titanium Alloy Aluminium IVD C.pdf

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1、STDUAECMA PREN 4072-ENGL 1999 1012311 0017237 418 Edition approved for publication 1999-11 -30 AECMA STANDARD NORME AECMA AECMA NORM C3 Chairman Mr Visconti Comments should be sent within six months after the date of publication to AECMA Gulledelle 94 B-1200 BRUXELLES prEN 4072 Edition P 2 November

2、1999 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMA) 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, countersunk head screw, cross re

3、cess screw, titanium alloy, screw thread, specification, 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 tita

4、nium alloy, aluminium IVD coated Classification: I 100 MPa (at ambient temperature) / 425 OC Srie arospatiale Luft- und Raumfahrt 100“ Senkschrauben, mit Flgelkreuzschlitz, kurzes Gewinde, aus Titanlegierung, Aluminium IVD beschichtet Klasse: 1 100 MPa (bei Raumtemperatur) I425 OC Vis tte fraise 100

5、“ normale, empreinte cruciforme dporte, ft normal tolrance serre, filetage court, en alliage de titane, revtues aluminium IVD Classification : 1 i00 MPa ( temprature ambiante) I425 “C This “Aerospace Series“ frestandard has been drawn up under the responsibility of AECMA (The European Association of

6、 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 technical content shall not be

7、 changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and signafure of the AECMA Standard Checking Centre (NPS) and formal agreement of the Official Services of the Member countries it will be submitted as

8、a draft European Standard to CEN (European Committee for Standardization) for formal vote. Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-STD=AECMA PR

9、EN 4072-ENGL 1777 = LOL2331 0037238 354 Page 3 prEN 4072: 1999 I Scope This standard specifies the characteristics of screws, 100“ countersunk normal head, offset cruciform recess, close tolerance normal shank, short thread, in titanium alloy, aluminium IVD coated. Classification: 1 100 MPa 1) / 425

10、 “C 2) 2 Normative references IS0 3353 IS0 5855-2 IS0 5856 IS0 791 3 IS0 7994 IS0 91 52 EN 2000 EN 2424 EN 3042 EN 4016 TR 3775 MIL-C-83488C Aerospace - Rolled threads for bolts - Lead and runout requirements Aerospace - MJ threads - Part 2: Limit dimensions for bolts and nuts Aerospace - Screws, 10

11、0“ normal countersunk head, internal offset cruciform ribbed 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 - Bolts and screws, metric - Tolerances of form and position Aerospace -

12、 Internal drive, offset cruciform recess (Torq-Set 9) for rotary fastening devices - Metric series Aerospace - Bolts, with MJ threads, in titanium alloys, strength class 1 100 MPa - Procurement specification Aerospace series - Quality assurance - EN aerospace products - Approval of the quality syste

13、m of manufacturers Aerospace series - Marking of aerospace products Aerospace series - Quality assurance - EN aerospace products - Qualification procedure Aerospace series - Oversized bolts 3) Aerospace series - Bolts and pins - National materials 4) Coating, aluminium, ion vapor deposited 5) 1) Min

14、imum tensile strength of the material at ambient temperature 2) Maximum temperature that the screw can withstand without continuous change in its original characteristics. aiter return to ambient temperature. The maximum temperature is determined by the surface treatment. 3) Published as AECMA Prest

15、andard at the date of publication of this standard 4) Published as AECMA Technical Report at the date of publication of this standard 5) Published by: Department of Defense (DoD), the Pentagon, Washington,DC 20301, U.S.A. Copyright Association Europeene des Constructeurs de Materiel Aerospatial Prov

16、ided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-STDgAECMA PREN ri012-ENGL 3777 W 303233L 0031237 270 W Page 4 prEN 4072: 1999 3 Required characteristics 3.1 See figure 1 and table I. Configuration - Dimensions - Masses Dimensions

17、 and tolerances are: in conformity with IS0 5856, expressed in millimetres and apply after surface treatment. 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 (titanium alloy, strength class 1 100 MPa) 3.4 Surface

18、 treatment MIL-C-83488, Type II, class 3, 4 pm to 12 pm After aluminium deposit: - mechanical blasting, 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.

19、Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-STDmAECMA PREN 4072-ENGL 3999 H LOL2311 0037240 TO2 = Page 5 prEN 4072: 1999 O c) .- L n rn L P E c E o

20、 .- 0- Y m m x 7 O 7 1 3 m A O- I / - m 4 1 7 I O- - 4 II Lu0 I I .sO 7 O001 Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-STD=AECMA PREN 4072-ENGL 1

21、999 LOL23LL 001724L 949 = Page 6 prEN 4072: 1999 O : u a c e! I a- s e al r al al O u al N - 2 O al c O 2i U al n 9 o F - E 4- 5 al O u U t O Q u - Y 2 s al U 8 5 UJ C al al - E E o ui c t c al 5 O m al ._ n s m C u 3 c O r o al m r ln 2i 0 .- u: n - 5 -0 g! a g! .- U 2- I. *. O0 I N O0 I c o 0 N 0-

22、 +I - 44 C U (9 O u a o8 I . E m $2 a- O0 I u! O +I - Ln in Y N Co cI 0“ 3“ (D Co Il I -I PPP 777 O00 ab-ao 000 c (0 c P in r- X O 2 - O O hl I U m g! f O m O - n in u Ou m Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for Resal

23、eNo reproduction or networking permitted without license from IHS-,-,-STDmAECMA PREN 4072-ENGL 1999 9 30323LL 0037242 685 D Holes Page 7 prEN 4072: 1999 Code 4 Designation EXAMPLE: Drive IS0 7994 Description block I Identity block Code R SCREW EN4072D050040A Number of this standard Hole code (see ta

24、ble 2) Diameter code (see table 1) Length code (see table 1) Drive code (see table 3) Lubrication code (see 3.4) i EN 2424 Style Diameter code 050 to 200 C+MJ Table 3 I l 1 I ISO unribbed 7994 A 5 Marking See table 3 and figure i, indented. Table 3 I 030 and 040 I N I Copyright Association Europeene

25、 des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-STD-AECMA PREN 4072-ENGL 3999 W 3032313 0037243 733 Page 8 prEN 4072: 1999 6 Technical specification IS0 9152, with the following modi

26、fications: 6.1 Approval of man u fact u rers 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 Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-