1、STD-AECMA PREN 4108-ENGL 1997 W LCIL23LL 0033288 210 AECMA STANDARD prEN 4108 NORME AECMA Edition P 1 AECMA NORM July 1997 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 : 49.030.99 Descript
2、ors : ENGLISH VERSION Aerospace series Wrenches, crow foot, attachment socket, socket drive Srie arospatiale Embouts cannels, & tuyauter, carr conducteur radial Luft- und Raumfahrt Ringschlsseleinstze. offen, verzahnt mit Innenvierkant This “Aerospace Series“ Prestandard has been drawn up under the
3、responsibility of AECMA (The European 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
4、this Prestandard, the technical content 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 (NPSI and formal agreement of the Official Servi
5、ces of the Member countries it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formai vote. Nota - Extra coDies can be supplied bv B.N.A.E. - TechnoDolis 54 - 199. rue Jean-Jacaues Rousseau - 921 38 ISSY-LES-MOULINEAUX CEDEX I Comments should be sen
6、t within six months after the date of publication to I Edition approved for publication 1997-07-31 AECMA Gulledelle 94 B-1200 BRUXELLES I I aecma 1997 C8 Chairman Mr Feltham COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesSTD-AECMA PREN
7、 qLOB-ENGL 3747 = L0123LL 0033289 157 Page 3 prEN 4108 : 1997 1 Scope This standard specifies the characteristics of crow foot wrenches for splined nuts for aerospace applications. 2 Normative references IS0 1174 Assembly tools for bolts and screws - Driving squares for power socket wrenches and han
8、d socket wrenches IS0 4156 Straigth cylindrical involute splines - Metric module, side fit - Generalities, dimensions and inspection EN 2424 Aerospace series - Marking of aerospace products EN 41 11 Aerospace series - Wrenches, splined, sockets for pipe fittings - Technical specification l) 3 Requir
9、ed characteristics 3.1 Configuration - Dimensions - Tolerances See figures 1 and 2 and tables 1 and 2. Dimensions and tolerances are in millimetres. 3.2 Material Material shall be corrosion resistant. The actual material specification shall be the choice of the manufacturer, provided that the spanne
10、r meets the requirements of the technical specification, EN 41 1 1. 3.3 Hardness 42 HRC 54 3.4 Surface treatment Nickel-chromium coating Nickel thickness : 5 pm Chromium thickness : 0,25 pm 1) Published as AECMA Prestandard at the date of publication of this standard Previous page is blank COPYRIGHT
11、 Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesSTD*AECMA PREN VLOB-ENGL 1797 M LOL233l 0033290 975 II Page 4 prEN 4108 : 1997 in accordance with IS0 1174 i TYPE Cl A- splhc drive. For spline dimensions see Table 2. Section AB Drawing not to sca
12、le Dimensions not quoted are at manufacturers discretion. Dimension “A“ to be equidistant about slot centre line. Surface texture to be Ra 32 unless otherwise specified. Shape designated “optional“ are at manufacturers discretion. d Figure 1 Table 1 2 I f max. max. 14 8 18 9 10 22 1) DN : Diameter N
13、ominal (outside diameter of the corresponding pipe) I 2) In accordance with IS0 1174 G max. 7 9 11 P 2, 4 5,5 8 Q 2, 10 12,5 COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling Services STDmAECMA PREN 4108-ENGL 1777 W L01232L DOL3271 805 Page 5 prE
14、N 4108 : 1997 Figure 2 Table 2 Rmin / Splines - 45O pressure angle - side fit - fillet root - 6H tolerance to IS0 41 56 I I I LiLI Circubr sp .e width 1,209 1,258 1,210 I- 1,259 1,260 1,211 1,261 1,660 1.60E 1,661 1,662 1,663 1.60E 2,062 2,002 1,607 1,226 1.22 - 1,22 - 1,228 - 1,626 1,17E - 1.57 - 1
15、,62 - adius min. - 0,19 - 0.26 - 0,31 - 1 ) DN : Diameter Nominal (outside diameter of the corresponding pipe) COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesSTDmAECMA PREN i.ILOB-ENGL 3777 = LO32333 0033292 743 W Page 6 prEN 4108 : 19
16、97 4 Designation EXAMPLE : Description block identity block EN41 OS1 O Number of this standard DN (tube diameter code, see tables 1 and 2) NOTE : if necessary the code 19005 shall be placed between the description block and the identity block. 6 Marking EN 2424, style C, as indicated on figure 1. 7 Technical specification EN 4111 COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling Services
