1、CEN PRENr4Lb8 94 3404589 0062758 545 Edition approved for publication AECMA STANDARD NORME AECMA AECMA NORM C8 Chairman Comments should be sent within six months after the date of Dublication to prEN 4168 Edition P1 May 1994 DIT PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATRIEL AEROSPATIAL Tec
2、hnopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cedex - Tl. (1) 47.36.98.76 UDC : Descriptors : ENGLISH VERSION Aerospace series Clips, spring tension, three parts Outer clips in heat resisting steel FE-PA92HT (A2861 Srie arospatiale Luft- und Raumfahrt Colliers de fixation r
3、essort en trois parties Demi-colliers extrieurs, Rohrschellen, federnd, dreiteilig AuBenschelle aus hochwarmfestem Stahl en acier rsistant la corrosion FE-PA92HT (A286) FE-PA9PHT (A286) This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA (Association Europenne des
4、 Constructeurs de Matriel Arospatial). 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 fallo wing comment by the Member countries. Subsequent to the publication of this prestandard, the technical cont
5、ent shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and signature of the AECMA Standard Checking Centre INPSI and formal agreement of the Official Services of the Member countries it will
6、be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. 1994-05-31 AECMA Technopolis - 175, rue Jean-Jacques Rousseau 921 38 Issy-les-Moulineaux Cedex - FRANCE M. Williams aecma 199 CEN PRENx4Lb8 94 W 3404589 OOb2759 481 W Page 3 prEN 41 68 : 1994 i
7、 Scope This standard specifies the characteristics of outer clips, three parts, spring tension, in FE-PA92HT for applications at a maximum temperature of 260 OC. They shall be assembled with parts from EN 41 66 and EN 41 67. 2 Normative references EN 2000 Aerospace series - Quality assurance - EN ae
8、rospace products - Approval of the quality system of manufacturers EN 2424 Aerospace series - Marking of aerospace products 1) O O O EN 2516 Aerospace series - Passivation of corrosion resistant steels and decontamination of nickel base alloys 2) EN 3638 Aerospace series - Heat resisting steel FE-PA
9、92HT - Solution treated - Sheet and strip - a I 3 mm 2) EN 4166 Aerospace series - Clips, spring tension, three parts - PTFE bushes 3) EN 4167 Aerospace series - Clips, spring tension, three parts - Inner clips in heat resisting steel FE-PA92HT (A286) 3) 3 Required characteristics 3.1 See figure 1 a
10、nd table 1. Dimensions and tolerances are in millimetres and apply after passivation. Configuration - Dimensions - Tolerances 3.2 Material EN 3638 3.3 Surface treatment EN 2516 3.4 Heat treatment Precipitation heat treated after forming 3.5 Hardness HV = 260 to 345 1) Published as AECMA Standard at
11、the date of publication of this standard 2) In preparation at the date of publication of this standard 3) Published as AECMA Prestandard at the date of publication of this standard Previous page is blank CEN PREN*4LbA 94 m 3404589 00627bO LT3 m Diameter code 004 006 Page 4 prEN 4168 : 1994 A B C max
12、. min. max. min. max. min. 8,7 8,l 13,6 13,l 8,7 8,l 10,6 10 14,5 14 10,6 10 Y Break sharp edges 0,l to 0,4 E max. min. 0,9 0,7 1,l 0,9 Y Direction G max. 45O 550 65 O View along L o1 2 014 016 018 Figure l Table 1 16,7 15,7 17,8 17,3 16,5 15,9 18,5 17,5 18,7 17,7 18,3 17,7 20,3 19,3 19,6 18,6 20,l
13、19,5 22,l 21,l 20,5 20 21,9 21,3 Marking .: 025 032 +- 1 28,3 27,3 24 23,5 28,l 27,5 35,3 34,3 27,5 27 35,l 34,5 I I I 008 I 123 I 11,9 I 15,5 I 15 I 12,5 I 11,9 I O10 I 14,3 I 13,7 I 16,4 I 15,9 I 14,3 I 13,7 1 I I 020 I 24 I 23 I 21,5 I 21 I 23,8 I 23,2 I I I I I I 1 1 min. 350 450 550 CEN PREN+4L
14、b 94 3404589 OOb2bL 03T Page 5 prEN 41 68 : 1994 4 Designation EXAMPLE : Description block Identity block OUTER CLIP Number of this standard Diameter code (see table 1) NOTE : If necessary, the code 19005 shall be placed between the description block and the identity block. 5 Marking EN 2424, style A, as indicated on figure 1. 6 Quality assurance EN 2000
