SIST EN 4644-001:2012

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.VSHFLILNDFLMHLuft- und Raumfahrt - Elektrische und optische Rechtecksteckverbinder, modular, rechteckige Kontakteinsätze, Dauerbetriebstemperatur 175 °C (oder 125 °C) konstant - Teil 001: Technische LieferbedingungenSérie aérospatiale - Connecteur, électrique et optique, rectangulaire, modulaire, à inserts rectangulaires, température de fonctionnement 175 °C (ou 125 °C) continu - Partie 001: Spécification techniqueAerospace series - Connector, electrical and optical, rectangular, modular, rectangular inserts, operating temperature 175 °C (or 125 °C) continuous - Part 001: Technical specification49.060Aerospace electric equipment and systemsICS:Ta slovenski standard je istoveten z:EN 4644-001:2012SIST EN 4644-001:2012en01-september-2012SIST EN 4644-001:2012SLOVENSKI
STANDARD



SIST EN 4644-001:2012



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 4644-001
May 2012 ICS 49.060; 49.090 English Version
Aerospace series - Connector, electrical and optical, rectangular, modular, rectangular inserts, operating temperature 175 °C (or 125 °C) continuous - Part 001: Technical specification
Série aérospatiale - Connecteur, électrique et optique, rectangulaire, modulaire, à inserts rectangulaires, température de fonctionnement 175 °C (ou 125 °C) continu - Partie 001: Spécification technique
Luft- und Raumfahrt - Elektrische und optische Rechtecksteckverbinder, modular, rechteckige Kontakteinsätze, Dauerbetriebstemperatur 175 °C (oder 125 °C) konstant - Teil 001: Technische LieferbedingungenThis European Standard was approved by CEN on 6 August 2011.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4644-001:2012: ESIST EN 4644-001:2012



EN 4644-001:2012 (E) 2 Contents Page Foreword .3Introduction .41Scope .42Normative references .43Terms and definitions .54Description .65Design . 186Dimensions and masses . 197Tests . 778Quality assurance . 919Designation and marking . 9710Delivery conditions . 9711Packaging . 9712Storage . 97 SIST EN 4644-001:2012



EN 4644-001:2012 (E) 3 Foreword This document (EN 4644-001:2012) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). This standard was reviewed by the Domain Technical Coordinator of ASD-STAN's Electrical Domain. After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of ASD, prior to its presentation to CEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November 2012, and conflicting national standards shall be withdrawn at the latest by November 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 4644-001:2012



EN 4644-001:2012 (E) 4 Introduction The connectors defined by this standard are suitable for use on board of commercial and military aircraft for both disconnect panel and rack and panel applications in severe environmental conditions. 1 Scope This European Standard specifies the required characteristics, the condition for qualification, acceptance and quality assurance for electrical and optical rectangular connectors with single or multiple removable rectangular inserts for use in a temperature range from – 65 °C to 175 °C continuous for electrical contact. This family of connectors is particularly suitable for aeronautic use in zones of severe environmental conditions on board aircraft, applying EN 2282. Inserts for fiber optic contacts or mixing fiber optic contacts and electrical contacts are described in EN 4639-002. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2266-003, Aerospace series — Cables, electrical, for general purpose — Operating temperatures between − 55 °C and 200 °C — Part 003: Ink jet printable — Product standard EN 2282, Aerospace series — Characteristics of aircraft electrical supplies EN 2591 (all parts), Aerospace series — Elements of electrical and optical connection — Test methods EN 3155-001, Aerospace series — Electrical contacts used in elements of connection — Part 001: Technical specification EN 3155-002, Aerospace series — Electrical contacts used in elements of connection — Part 002: List and utilization of contacts EN 4530-002, Aerospace series — Sealing sleeves used in elements of connection — Part 002: List and utilization of sealing sleeves EN 4639-002, Aerospace series — Connectors, optical, rectangular, modular, multicontact, 1,25 diameter ferrule, with removable alignment sleeve holder — Part 002: List of product standards EN 4644-002, Aerospace series — Connector, electrical and optical, rectangular, modular, rectangular inserts, operating temperature 175 °C (or 125 °C) continuous — Part 002: Specification of performance and contact arrangements EN 9100, Quality Management Systems — Requirements for Aviation, Space and Defence Organizations EN 9133, Aerospace series — Quality management systems — Qualification procedure for aerospace standard parts SIST EN 4644-001:2012



EN 4644-001:2012 (E) 5 MIL-HDBK-454B, General guidelines for electronic equipment 1) SAE AS31971, Connectors, high reliability, space use, general specification for 2) SAE AS39029/1, Installing and removal tools, connector electrical contact, general specification for 2) 3 Terms and definitions For the purposes of this document, the definitions given in EN 2591-100 apply. The reference planes and axis used in this product standard are listed below: Ap : shell bottoming reference plane on male housing. Ar : shell bottoming reference plane on female housing. Bp : vertical axis of male housing Br : vertical axis of female housing Cp : horizontal axis of male housing Cr : horizontal axis of female housing DAC:
disconnect aligning housing cavity DNC:
disconnect non aligning housing cavity N : extremity of insert retention clip reference plane P : front face of hard insert R : vertical axis of housing backshell interface RAC:
rack & panel aligning housing cavity RNC:
rack & panel non Aligning housing cavity S : horizontal axis of housing backshell interface T : backshell bottoming reference plane on housing X : horizontal axis of insert Y : vertical axis of insert
1) Published by: DoD National (US) Mil. Department of Defense http://www.defenselink.mil/ 2) Published by: SAE National (US) Society of Automotive Engineers http://www.sae.org/ SIST EN 4644-001:2012



EN 4644-001:2012 (E) 6 4 Description 4.1 General This family of connectors is divided into two types of connectors which are the following:  disconnect panel connectors;  rack and panel connectors. The current revision of this standard is describing two disconnect panel housing sizes and one rack and panel housing size. However, it is also providing a design rule to extend the current range described. The design rule is based on the description of housing aligning cavities, housing non aligning cavities and a clinging dimension line; see 4.2 and 4.3 for details. These connectors have rectangular housings, removable rectangular inserts and contacts and can be fitted with rear accessories. Male and female inserts can be fitted either in the male or female housing. Depending on the housing size, the disconnect panel connectors are mated and unmated either by using a centre coupling screw or two quarter turn fasteners. The centre coupling screw and coupling nut can be installed either on the male or female housing. The centre coupling mechanism shall provide a total of 12 polarization positions. Housings having the quarter turn fasteners are polarized by using two polarizing posts and keys offering a total of 16 polarizing positions. A size 1 housing has one insert cavity with one keyway, a quarter turn fastener and two polarizing posts or keys. A size 2 housing has two insert cavities with one cavity having one keyway and the other having two keyways; a central coupling mechanism provides housing polarization. There is
two rack and panel (blind mate) connector housing sizes; it is a size three housing and a size four housing which have respectively three and four insert cavities all with one keyway, three polarizing posts or keys offering 64 polarizing positions and no locking mechanism. In addition to this rack and panel use, the size four male connector can be mated with two size 2 female connectors in a disconnect application by using two centre coupling mechanisms. These connectors use different types of contacts (signal, power, coaxial, triaxial, quadrax, etc.) see EN 3155-002 and optical contacts see EN 4639-002. SIST EN 4644-001:2012



EN 4644-001:2012 (E) 7 4.2 Female housing 4.2.1 General Size 1 and 3 female housing shall be attached by rectangular flange with two mounting holes, size 3 housing has floating eyelet mounting holes or through holes. The size 3 housing has four pins, each of which can take two positions, to polarize the shell with the panel on which it is mounted. Size 4 female housing shall be attached by rectangular flange with two or three mounting holes, Size 4 housing has four pins, each of which can take two positions, to polarize the shell with the panel on which it is mounted. Size 2 female housing are either panel mount connector or cable connector. Panel mount receptacle connector shall be attached by rectangular flange with two mounting holes. The insert cavities are identified on the female housing by letters A, B, C, D for size 4, letters A, B, C for size 3 letters, A, B for size 2 and no letter for size 1. The insert cavities are polarized by either one (A polarizing position) or two keyways (B polarizing position) location. Housing size 1, 3 and 4 insert cavities have one keyway. Housing size 2 insert cavity identified with letter A has one keyway and insert cavity identified with letter B has two keyways. Each insert cavity has two insert retaining devices allowing rear insertion and rear release of the insert. Each female housing has a grounding device ensuring electrical continuity between housings before contact mating. In addition, size 1 and 2 female housings are available with a grounding block (classes B and F) or without a grounding block (classes A, C and E) allowing grounding of a cable braid with a pigtail. For each female housing, some cavities are aligning cavities and other cavities are non aligning.
Aligning cavities guaranty not only the alignment between male and female housing but also guarantee the shell to shell bottoming. Non aligning female housing cavities have a circular location tolerance. In order to define how alignment of the female and male housing is achieved a dimension line between the two housing aligning cavities is defined. SIST EN 4644-001:2012



EN 4644-001:2012 (E) 8 4.2.2 Disconnect panel female housing alignment
Key 1 Dimensions for housing size 1 2 Dimension for housing size n (n > 1) 3 Dimension of grounding device (optional) Figure 1 – Disconnect panel female aligning cavity (DAC) SIST EN 4644-001:2012



EN 4644-001:2012 (E) 9
Key 1 Dimension of grounding device (optional) Figure 2 — Disconnect panel female aligning cavity (DNC) SIST EN 4644-001:2012



EN 4644-001:2012 (E) 10 4.2.3 Rack and panel female housing
Key 1 Dimension for grounding device
Figure 3 —
Rack and panel female aligning cavity (RAC) SIST EN 4644-001:2012



EN 4644-001:2012 (E) 11
Key 1 Dimension for grounding device (optional) Figure 4 — Rack and panel female non aligning cavity (RNC) SIST EN 4644-001:2012



EN 4644-001:2012 (E) 12 4.3 Male housing 4.3.1 General Size 1, 3 and 4 male housing shall be attached by rectangular flange with two mounting holes; Size 2 male housing are either panel mount connector or cable connector. Panel mount connector shall be attached by rectangular flange with two mounting holes. The insert cavities are identified on the male housing by letters A, B, C, D for size 4, letters A, B, C for size 3, letters A, B for size 2 and no letter for size 1. The insert cavities are polarized by either one or two keyways location. Housing size 1, 3 and 4 insert cavities have one keyway. Housing size 2 insert cavity identified with letter A has one keyway and insert cavity identified with letter B has two keyways. Each insert cavity has two insert retaining devices allowing rear insertion and rear release of the insert. Size 1 and 2 male housings are available with (classes B and F) or without a grounding block (classes A, C and E) allowing grounding of a cable braid with a pigtail. All male housing have a minimum of one (for single cavity connectors) and a maximum of two aligning housing cavities (see Figure 5 and Figure 7); the remaining housing cavities are non aligning cavities (see Figure 6 and Figure 8). Aligning cavities guaranty not only the alignment between male and female housing but also guarantee the shell to shell bottoming. Non aligning housing cavities have a circular location. In order to define how alignment of the female and male housing is achieved a clinging dimension line between the two housing aligning cavities is defined. SIST EN 4644-001:2012



EN 4644-001:2012 (E) 13 4.3.2 Disconnect panel male housing
Key 1 Dimension for housing size 1 2 Dimension for housing size n (n > 1) Figure 5 — Disconnect panel male aligning cavity (DAC) SIST EN 4644-001:2012



EN 4644-001:2012 (E) 14
Figure 6 — Disconnect panel male non aligning cavity (DNC) SIST EN 4644-001:2012



EN 4644-001:2012 (E) 15 4.3.3 Rack and Panel male housing See Figure 7 and Figure 8.
Figure 7 — Rack and panel male aligning cavity (RAC) SIST EN 4644-001:2012



EN 4644-001:2012 (E) 16
Figure 8 — Rack and panel male non aligning cavity (RNC) 4.4 Rear accessories See EN 4644-002. 4.5 Inserts The insert assembly shall be single-bloc type design complete with contact retention systems and appropriate seals. The female inserts use female contacts and male inserts use male contacts. These inserts use contacts of size 22, 20, 16, 12, 8 and 5. The inserts are rear release rear removable from the housing. Male and female inserts can be installed either in the male or female housing. There are inserts with one polarizing rib (A polarizing position) and inserts with two polarizing ribs (B polarizing position). This means that there are inserts dedicated to housing cavities with one keyway and inserts dedicated to housing cavities with two keyways. See Table 1 below. SIST EN 4644-001:2012



EN 4644-001:2012 (E) 17 Table 1 Shell size 1 2 3 4 Shell cavity labeling None A B A B C A B C D Insert polarization A A B A A A A A A A
A blank insert is installed in a housing cavity where no contact is required. This blank insert has no polarizing rib and the same dimensions as an insert for pin contacts. It can be installed in any male or female housing cavity. This blank insert can mate without causing any interference with an insert for male contacts or with an insert for female contacts. The blank insert does not provide sealing. 4.6 Keying mechanism Size 1, 3 and 4 housings have a polarizing system using polarizing posts having a L shape cross section and polarizing keys having a L shape cavity to mate with the polarizing posts. Each polarizing post and key provides 4 polarizing positions. Each post and key is retained in the housing by a special shape which allowed them to be clipped in the housing. Size 1 housings have two polarizing pins offering 16 polarizing positions. Size 3 and 4 housings have three polarizing pins offering 64 polarizing positions.
The size 2 housing has either a centre coupling screw or coupling nut which ensure also the polarizing function. The coupling screw has a coding peg and the coupling nut has a coding slot. The centre coupling screw and nut have an hexagonal shoulder which slides in an hexagonal print in the housing, consequently, the coupling screw or nut can take 6 positions. The coding peg on the coupling screw and the slot on the coupling nut can be vertically aligned with an angle or a flat of the hexagonal shoulder. There are two types of coupling screw and coupling nut, those having the coding peg or the slot aligned with a flat and those for which it is aligned with an angle of the hexagonal shoulder. These two types of coupling screw and nut provide a total of 12 polarizing positions. The size 4 male connector can have two centre coupling screw or coupling nut in order to be mated with two size 2 disconnect female connectors. 4.7 Dust caps See EN 4644-002. 4.8 Materials and surface treatment 4.8.1 General When dissimilar metals are in close contact, adequate protection against corrosion shall be used in order to make sure that the electromotive force of the cell shall not exceed 0,25 V. 4.8.2 Housings The material of the housing shall be aluminium alloy or composite. When aluminium is used, it shall be protected with nickel plating or aluminium chromatation (see EN 4644-002). Composite housings are nickel plated. SIST EN 4644-001:2012



EN 4644-001:2012 (E) 18 4.8.3 Contacts Removable contacts (see EN 3155-002). 4.8.4 Non-metallic materials The material used for composite housings, polarizing posts and keys, inserts, seals, dust covers and grommets shall have mechanical characteristics consistent with the required use. 5 Design 5.1 Housings The connector housing shall be a one piece construction. Each housing cavity shall be fitted with two retaining device to provide insert retention. If the receptacle housing has a grounding device per housing cavity, it shall provide electrical contact between housings before probability of electrical contact. The housing shall accommodate rear accessories. The accessories shall be fixed by screw on the rear side of the connector. The quarter turn fasteners and the centre coupling mechanism shall be designed so that the connectors mate when it is rotated clockwise and unmate when it is rotated counter clockwise. The quarter turn fasteners and central jackscrew shall have a hexagonal socket head screw compatible with the coupling torque values defined in the product standard. 5.2 Inserts Inserts shall be made of a rigid dielectric material or metallic when specified; elastomeric material for sealing parts. Cross sections and angle radii shall be sufficient to ensure that no cracking, chipping or breakage can occur in normal use. There are two types of inserts:  Inserts with one polarizing rib;
 Inserts with two polarizing ribs. Inserts with one polarizing rib shall fit the cavities of housing size 1, 3, 4 and cavity A of housing size 2. Inserts with two polarizing ribs shall fit the cavity B of housing size 2. The inserts shall be rear removable from the housing and shall be mechanically retained in the housing. The removal of an insert shall be done by using the tool described in product standard (see EN 4644-002). An insert is installed in the housing by hand, it is a rear snap in insert. The mating face of the insert shall ensure that sealing is provided when connectors are mated together. The interfacial seal shall be on the insert having male contacts and shall not be removable. The rear grommet shall permit sealing for all cable diameters indicated in EN 4644-002 and shall not be removable. For size 5 and height contacts, the insert contact cavity and the grommet shall accept the sealing boots described in EN 4530-002. The mechanical contact retention system shall be integrated in the rigid part of the insert. SIST EN 4644-001:2012



EN 4644-001:2012 (E) 19 Connectors shall be designed to allow the insertion and removal of individual contacts without having to remove the insert from the housing. Inserts shall be designed for rear release rear removable contacts. Insertion, extraction tools are specified in EN 3155 product standards. There are three environmental categories of inserts:  environmental inserts (with grommet and interfacial seal);  non environmental inserts (without grommet and interfacial seal);  Semi environmental inserts (with an interfacial seal and without grommet). 5.3 Connector mating sequence The mating sequence shall be the following:  shell to shell engagement and ESD discharge;  polarizing;  locking system;  grounding device system;  electrical contacts;  sealed interface compression;  metal to metal or composite shell to shell bottoming. 6 Dimensions and masses The general dimensions and masses are given in the product standard. 6.1 Disconnect panel connectors 6.1.1 Female and male mating dimensions SIST EN 4644-001:2012



EN 4644-001:2012 (E) 20 6.1.1.1 Size 1 disconnect panel connectors See Figure 9 to Figure 11.
Figure 9 — Mating dimensions SIST EN 4644-001:2012



EN 4644-001:2012 (E) 21
Key 1 A keying Figure 10 — Female housing SIST EN 4644-001:2012



EN 4644-001:2012 (E) 22
Key 1 A keying Figure 11 — Male housing SIST EN 4644-001:2012



EN 4644-001:2012 (E) 23 6.1.1.2 Size 2 disconnect panel connectors See Figure 12 to Figure 14.
Figure 12 — Mating dimensions SIST EN 4644-001:2012



EN 4644-001:2012 (E) 24
Key 1 A keying 2 B keying Figure 13 — Male housing
SIST EN 4644-001:2012



EN 4644-001:2012 (E) 25
Key 1 A keying 2 B keying Figure 14 — Female housing
SIST EN 4644-001:2012



EN 4644-001:2012 (E) 26 6.1.1.3 Size 2 female disconnect connectors mated with size 4 male disconnect connectors See Figure 15.
Figure 15 — Mating dimensions SIST EN 4644-001:2012



EN 4644-001:2012 (E) 27 6.1.2 Housing size 1 locking system 6.1.2.1 Female housing See Figure 16.
Key 1
Dimension when not under stress 2
Minimum spring compression force: 150 N. per axis 3
A keying Figure 16
SIST EN 4644-001:2012



EN 4644-001:2012 (E) 28 6.1.2.2 Male housing See Figure 17 and Figure 18.
Key 1 A keying
Figure 17 SIST EN 4644-001:2012



EN 4644-001:2012 (E) 29
Figure 18 SIST EN 4644-001:2012



EN 4644-001:2012 (E) 30 6.1.3 Size 2 locking system 6.1.3.1 Male housing with jackscrew See Figure 19a.
Key 1 A keying 2 B keying Figure 19a
SIST EN 4644-001:2012



EN 4644-001:2012 (E) 31 6.1.3.2 Male housing with jacknut See Figure 19b. Key 1 A keying 2 B keying Figure 19b SIST EN 4644-001:2012



EN 4644-001:2012 (E) 32 6.1.3.3 Female housing with jacknut See Figure 20a.
Key 1 A keying 2 B keying Figure 20a
SIST EN 4644-001:2012



EN 4644-001:2012 (E) 33 6.1.3.4 Female housing with jackscrew See Figure 20b.
Key 1 A keying 2 B keying Figure 20b SIST EN 4644-001:2012



EN 4644-001:2012 (E) 34 6.1.4 Size 4 locking system for a mating with a size 2 locking system 6.1.4.1 Male housing See Figure 21.
Key 1 A keying 2 Indexing point For others dimension on the locking device, see Figure 19a. Figure 21
SIST EN 4644-001:2012



EN 4644-001:2012 (E) 35 6.2 Rack and Panel connector 6.2.1 Size 3 connectors See Figure 22 to Figure 24. Key 1
Panel mounting faces Figure 22 — Mating dimensions SIST EN 4644-001:2012



EN 4644-001:2012 (E) 36
Key 1 A keying Figure 23 — Male housing SIST EN 4644-001:2012



EN 4644-001:2012 (E) 37
Key 1 A keying Figure 24 — Female housing SIST EN 4644-001:2012



EN 4644-001:2012 (E) 38 6.2.2 Size 4 connectors See Figure 25. Key 1 Panel mounting faces Figure 25 — Mating dimensions SIST EN 4644-001:2012



EN 4644-001:2012 (E) 39
Key 1 A keying Figure 26 — Male housing SIST EN 4644-001:2012



EN 4644-001:2012 (E) 40
Key 1 A keying Figure 27 — Female housing SIST EN 4644-001:2012



EN 4644-001:2012 (E) 41 6.3 Rear accessory interface 6.3.1 Male and female size 1 rear accessory interface See Figure 28.
Key 1 Vertical reference axis of connector (Br or Bp) 2 Insert longitudinal axis (Cr or Cp) 3 Blind hole optional 4 Self-locking thread 4-40 UNC 5 Radius 3,60 max. optional Figure 28 SIST EN 4644-001:2012



EN 4644-001:2012 (E) 42 6.3.2 Male and female size 2 rear accessory interface See Figure 29.
Key 1 Vertical reference axis of connector (Br or Bp) 2 Horizontal reference axis of connector (Cr or Cp) 3 Optional shape Figure 29 SIST EN 4644-001:2012



EN 4644-001:2012 (E) 43 6.3.3 Female size 3 rear accessory interface See Figure 30.
Key 1 Vertical reference axis of connector (Br) 2 Horizontal reference axis of connector (Cr) 3 Vertical axis of shell cavity 4 Optional shape 5 4-40 UNC 2B self-locking thread. Depth = 4,50 mm min. Figure 30 SIST EN 4644-001:2012



EN 4644-001:2012 (E) 44 6.3.4 Female size 4 rear accessory interface See Figure 31.
Key
1 Vertical reference axis of connector (Br) 2 Horizontal reference axis of connector (Cr) 3 Vertical axis of shell cavity 4 Optional shape 5 4-40 UNC 2B self locking thread. Depth = 4,50 mm min. Figure 31 SIST EN 4644-001:2012



EN 4644-001:2012 (E) 45 6.4 Male and female ground block interface 6.4.1 Housing size 1 See Figure 32. Key 1 M39029/1-101 extremity to female connector bottoming face
2 M39029/1-101 extremity to male connector bottoming face 3 Insert longitudinal axis 4 Horizontal axis of connector 5 Housing and insert vertical axis Figure 32 SIST EN 4644-001:2012



EN 4644-001:2012 (E) 46 6.4.2 Housing size 2 See Figure 33.
Key 1 Dimension applicable to male housing 2 Dimension applicable to female housing 3 Horizontal axis of connector 4 Vertical axis of housing cavities 5 Vertical axis of connector Figure 33 SIST EN 4644-001:2012



EN 4644-001:2012 (E) 47 6.5 Insert to housing interface 6.5.1 Contact position 6.5.1.1 Contact position for connector size 1 See Figure 34 and Table 2.
Key 1 Contact extremity 2 Dimension when insert is butting in rear position 3 Female contact cavity position 4 Male contact cavity position
Figure 34 SIST EN 4644-001:2012



EN 4644-001:2012 (E) 48 Table 2 Dimensions in millimetres Contact size A B C D min. max. min. max. min. max. min. max. 22 4,04 5,17 3,78 5,02 8,21 9,35 8,38 9,61 20 3,54 4,70 3,78 4,93 8,68 9,85 8,47 9,61 16 2,87 4,10 3,83 5,02 9,28 10,52 8,38 9,56 12 2,87 4,12 3,83 5,04 9,26 10,52 8,36 9,56 8 2,30 3,47 4,23 5,39 9,92 11,09 8,0
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