1、A.E.C.M.A. STANDARD NORME A.E.C.M.A, A.E.C.M.A. NORM Edition approved for publication Comments should be sent within six months after the date of publication decision 88, Bd. Malesherbes 2 November 1987 A.E.C.M .A. 75008 PARIS - FRANCE prEN 2602 Issue P 1 November 1987 C4 Chairman Mr STAIB DIT PAR L
2、ASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATERIEL AROSPATIAL 88, boulevard Malesherbes, 75008 PARIS -TL. 45-63-82-85 UDC : 621.643.06 : 629.7 Key words : Aircraft industry - Straight metric-size unions - Ports - Dimensions ENGLISH VERSION Aerospace series Ports for installation of straight metric-
3、size unions with locking ring Dimensions Srie arospatiale Implantafion des raccords droits mtriques avec bague de scurit Dimensions Luft- und Raumfahrt Einschraub-Bohrung fr gerade metrische Verschraubung mit Sicherungsring Abmessungen This Aerospace Series pre-standard has been drawn up under the r
4、esponsibility of AECMA (Association Europenne des Constructeurs de MatrielArospatial). It is published on green paper for the needs of AECMA-Members. It has been technically approved by the experts of the concerned AECMA Commission following comment by the Member countries. . Subsequent to the publi
5、cation of this pre-standard, 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 (NPS) and formal agreement of the Off
6、icial Services of the Member countries it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for final vote. AECMA PREN2602 87 1012311 . 0003676 b Issue P 1 prEN 2602 Page 3 1 Scope and field of application This standard specifies the dimensional character
7、istics of ports for the installation of straight metric-size unions and locking ring assembly with elastomer O-rings for use on aerospace equipment. This standard applies to all straight metric-size unions with locking ring whose port end is defined by standard EN 2603. 2 References IS0 1101 - Techn
8、ical drawings - Geometrical tolerancing - Tolerancing of form, orientation, location and run-out - Generalities, definitions, symbols, indications on drawings IS0 1302 -Technical drawings - Method of indicating surface texture on draw i ng s IS0 5855/1 -Aerospace construction - MJ Threads - Part 1 -
9、 Basic profile IS0 5855/3 -Aerospace - MJ Threads - Part 3 - Dimensions for fittings for fluid systems 1) EN 2603 -Aerospace series - Straight metric-size unions with locking ring - Port end - Dimensions EN 2604 -Aerospace series - Straight metric-size unions with locking ring - 830 union interface
10、- Dimensions EN 2605 -Aerospace series - Straight metric-size unions with locking ring - 24 union interface - Dimensions EN 2606 -Aerospace series - Straight metric-size unions with locking ring - 60union interface - Dimensions 1) O 3 Required characteristics 3.1 Cross reference table between standa
11、rds EN 2604, EN 2605 and EN 2606 . 1) In preparation 2) Note : MJ profile thread, per IS0 585511, tolerance 4H5H Der IS0 5855/3 except the minor diameter which is modified to- allow centering o; the broaching a tool. Issue P 1 AECMA PRENZb02 87 I LOL23Ll 0003b77 8 W prEN 2602 Page 4 3.2 Dimensions r
12、all dimensions I h- - Y Detail Y Flat on wire if required Detail Z Dim. when machining with profile cutter Detail Z Dim. when machining with boring tool mc -4 F: 2; B 4; fi m * ;o z +I Wa a ad E W O + 0 d klz 4 ezi a, . _. I , c .rl L) C W -4 I a“ N O x rl ln m “? 4 m W 3 N W rl m cy -f, m W F; s m
13、s t2 N h ln W e4 -t, U ul o m ci* I I I . AECMA PREN2602 87 m LOL23LL 0003678 T m Issue P 1 prEN2602 Page 5 i 1 i- b AECMA PREN2602 87 LOL23LL 0003677 L Issue P l prEN 2602 Page 6 3.3 See 3.4 See 4 Surface roughness 3,2 / IS0 1302. Unless otherwise specified v Form and position tolerances IS0 1101. Designation Each port shall only be designated as in the following example : Identity block I Description block PORT Number of EN standard Dimensional code (see table 2) Note : If necessary the originator code S9005 may be introduced between description block and identity block.
