1、,- o O . Edition approved for publication 2 November 1987 A. E.C. M .A. STAN DARE) NORME A.E.C.M.A. A.E.C.M.A. NORM Comments should be sent within six months C4 Chairman after the date of publication decision 88, Bd. Malesherbes A.E.C.M.A. Mr STAIB 75008 PARIS - FRANCE prEN 2605 Issue P 1 November 1
2、987 EDITE PAR LASSOCIATION EUROPEENNE DES CONSTRUCTEURS DE MATERIEL AROSPATIAL 88, boulevard Malesherbes, 75008 PARIS -TEL. 45-63-82-85 UDC : 621.643.06 : 629.7 Key words : Aircraft industry - Straight metric-size unions - Interface - Dimensions ENGLISH VERSION Aerospace series Straight metric-size
3、unions with locking ring 240 union interface Dimensions Srie arospatiale Raccords droits mtriques avec bague de scurit Interface des raccords a 24O Dimensions Luft- und Raumfahrt Gerade metrische Verschraubung mit Sicherungsring 240 Anschluzapfen Abmessungen This .Aerospace Series pre-standard has b
4、een drawn up under the responsibility of AECMA (Association Europenne des 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 AECMA Commission following comment by the Member countries.
5、Subsequent to the publication 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 form
6、al agreement of the Officiai Services of the Member countries it will be submitted as a draft European Standard to CEN (European Committee $or Standardization) for final vote. AECMA PREN2605 87 I LOL23LL 000361 21 Previous page Issue P 1 prEN 2605 Page 3 is blank 0 1 Scope and field of app1icatio.n
7、This standard specifies the dimensional characteristics of the nut end of 24O cone 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 assembled to standard EN 2607 an
8、d used in hydraulic systems with a maximum pressure of 28000 kPa for which a metric size coupling with a 24O conical sealing surface has been selected 2 References IS0 1101 - Technical drawings - Geometrical tolerancing - Toierancing of form, orientation, location and run-out - Generalities, definit
9、ions, symbols, indications on drawings IS0 1302 -Technical drawings - Method of indicating surface texture on ISQ 5855/1 -Aerospace construction - MJ Threads - Part 1 - Basic profile IS0 5855/3 -Aerospace - MJ Threads - Part 3 - Dimensions for fittings for O draw i ngs fluid systems 1) IS0 7321 -Aer
10、onautics and space - Hydraulic systems - Geometric definition EN 2603 -Aerospace series - Straight metric-size unions with locking ring - of a metric-size union with a 24O conical seaing surface i) Port end - Dimensions EN 2607 -Aerospace series - Straight metric-size unions with locking ring - EN 2
11、645 -Aerospace series - Straight metric-size unions with locking ring - Configuration - O-ring dimensions Locking ring - Dimensions 1 j In preparation. -_ AECMA PREN2bOS 87 LOLZ3LL 0003b92 4 W Issue P 1 prEN 2605 Page 4 3 Required characteristics 3.1 Dimensions Inside dimensions in compliance with s
12、tandard IS0 7321. (1) Locking ring installed for dimensional check, see EN 2645 Contact between this dia and mating nipple - .- If102 1x1 shall be continuous 1. I II I 45“ f 5“ i Detail W (2) Refer to standard EN 2603 Figure AECMA PREN2605 87 W 101Z311 0003673 b W Port limen. iional code: 077 098 12
13、5 136 153 170 192 2 14 231 253 295 320 350 381 45 2 Thread Tube D5 nut D7 port nomi- end end na1 dia- meter 4g6g 4h6h I 05 06 08 10 12 16 li - Issue P 1 prEN 2605 Page 5 Table Dimensions in millimetres D6 0 -0,20 - 8,15 10,20 11,90 13,90 15,90 17,50 19,70 20 MJ271,501ELJ22x1,50 115,90 I21,50124,901
14、23,65 D17 b0,10 0 - 5,26 6,26 8,26 10,26 12,26 14,26 nomi- nal - 9,37 11,53 13,87 17,12 E,37 18,77 20,93 - +0,40 - 15,92 17,59 18,56 20,42 19,45 19,77 19,5a 56,26 VUSED 20,28 124,92121,261 7,25 I 2,28 I 4,401 i2,id 7,0016,85 10,80 D 5 and D 7 in compliance with IS0 585511 and 3 3 2 Surface roughness
15、 See IS0 302 - Unless otherwise specified 3.3 Form and position tolerances See IS0 1101. - I AECMA PRENZb05 87 LOL23Llr 0003bLl 8 W Issue P 1 prEN 2605 Page 6 4 Designation Each nut end shall only be designated as in the following example : Description block I Identity block NUT END EN2605-077 7-T Dimensional code I (see table ) Note : if necessary the originator code S9005 may be introduced between description block and identity block.
