1、AECMA STANDARD NORME AECMA AECMA NORM 1 aecma 1998 prEN 4323 Edition P 1 December 1998 I PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMA) Gulledelle 94 - 8-1200 BRUXELLES - Tel. (+32) 2 775 81 1 O - Fax. (132) 2 775 81 11 Edition approved for publication ICs: 49.030.20 C8 Chairm
2、an Comments should be sent within six months after the date of publication to Descriptors: Aircraft industry, screw, countersunk head screw, cross recessed screw, titanium alloy, classification, dimension, surface treatment, designation ENGLISH VERSION Aerospace series Screws, 100“ countersunk head,
3、 six lobe recess, threaded to head, in titanium alloy TI-P63, anodized, MOS, coated Classification: 900 MPa (at ambient temperature) I350 OC Srie arospatiale Luft- und Raumfahrt Vis tte fraise IOO“, empreinte six lobes, filetes sous tte, en alliage de titane TI-P63, anodises, revtues MOS, Classifica
4、tion: 900 MPa ( temprature ambiante) I350 “C 100“ Senkschrauben, Sechs-Bogenza hn, Gewinde bis Kopf, aus Titanlegieurng TI-P63, anodisiert, MOS, beschichtet Klasse: 900 MPa (bei Raumtemperatur) I350 OC This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA (The Europ
5、ean Association of 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 co
6、ntent shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. Afer examination and signature of the AECMA Standard Checking Centre (NPS) and formal agreement of the Official Services of the Member countries it will
7、 be submitted as a drafi European Standard to CEN (European Committee 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 1998-1 2-31 AECMA Gulledelle 94 6-1200 BRUXELLES Mr Feltham
8、Page 3 prEN 4323: 1998 1 Scope This standard specifies the characteristics of screws with 100“ countersunk head with six lobe recess, threaded to head, in TI-P63, anodized, MOS, coated, for aerospace applications. Classification: 900 MPa 1) / 350 “C 2) 2 Norm at ive references IS0 3353 IS0 5855-2 EN
9、 2424 EN 2491 EN 3457 EN 3813 EN 3818 EN 3911 Aerospace - Rolled threads for bolts - Lead and runout requirements Aerospace - MJ threads - Part 2: Limit dimensions for bolts and nuts Aerospace series - Marking of aerospace products Aerospace series - Molybdenum disulphide dry lubricants - Coating me
10、thods Aerospace series - Titanium alloy TI-P63 - Not heat treated - Reference heat treatment: solution treated and aged - Grade 2 forging stock for fasteners D I 25 mm 3) Aerospace series - Titanium alloy TLP64001 - Annealed - Bar and wire for forged fasteners - De 5 25 mm - Use condition: Solution
11、treated and aged - R, L 1 I O0 MPa 4) Aerospace series - Bolts with MJ threads, in titanium alloy TI-P63 - Classification: 1 100 MPa (at ambient temperature) - Technical specification 3) Aerospace series - Six lobe recess - Geometrical definition 3) 3 Required characteristics 3.1 See figure 1 and ta
12、bles 1 and 2. Dimensions and tolerances are in millimetres. They apply after anodizing but before MOS, coating. Configuration - Dimensions - Tolerances - Masses 3.2 Materials EN 3457 or EN 3813 3.3 Surface treatment EN 2491 _ 1) Minimum test strength of the material at ambient temperature 2) Maximum
13、 test temperature of the parts 3) Published as AECMA Prestandard at the date of publication of this standard 4) In preparation at the date of publication of this standard Previous page is blank STD-AECMA PREN q323-ENGL 3798 D 30323L3 0035538 L(2L( W _ Thread Code Designation 030 MJ3x0,5-4h6h O40 MJ4
14、x0,74h6h Page 4 prEN 4323: 1998 DEbF GHbK P Q R T O f 0,13 min. min. - 0,08 nom. TOI. max. min. nom. TOI. 2,68 6 5,4 4,5 1,4 O,O6 0,63 2,3 0 0.80 +0,1 IO -0,5 04 02 3.55 8 7,2 5,78 1,87 0,08 0,93 3 Rolled “c/ “c;/ 7- Values apply before anodizing and MOS, coating. 050 O60 070 Remove sharp edges O, 1
15、 to 0,4. MJ5x0,84h6h 4,48 10 9 7,71 2,38 0,s 3,4 0,5 0,3 1,l 3,98 3.58 EN3911-27 MJ6x1-4h6h 5.35 12 10,8 9 2,81 0.1 1,26 4,2 f0,5 + 5,l 4,6 EN391130 MJ7xldhGh 6,35 14 12,8 10,28 3,23 1,57 5,2 55 5 EN39114 0.7 0,5 1,5 o - not concave v-1 Figure 1 Table 1 STD-AECMA PREN 4323-ENGL 3998 m L0123Ll 003553
16、9 3bO m Page 5 prEN 4323: 1998 Table 2 a Mass = quoted in kgll O00 parts I STD=AECMA PREN 4323-ENGL 1578 LO123Ll 0015520 O82 = Page 6 prEN 4323: 1998 050 4 Designa ti on EXAMPLE: C Description block Identity block SCREWS EN4J23-030012 Number of this standard Thread code (see table I) Length code (see table 2) NOTE: If necessary, the code 19005 shall be placed between the description block and the identity block. 5 Marking EN 2424, style see table 3 and as indicated on figure I. Table 3 I Thread code I Style I 6 EN 3818 I 030and040 I F I I 060and070 1 A I Technical specification
