EN 3646-004:2015
(Main)Aerospace series - Connectors, electrical, circular, bayonet coupling, operating temperature 175 °C or 200 °C continuous - Part 004: Receptacle, jam-nut mounting - Product standard
Aerospace series - Connectors, electrical, circular, bayonet coupling, operating temperature 175 °C or 200 °C continuous - Part 004: Receptacle, jam-nut mounting - Product standard
This Standard defines the characteristics of the jam-nut mounted receptacles of the family of bayonet coupling circular connectors, intended for use in an operating temperature range of –65 °C to 175 °C or 200 °C continuous.
It applies to models defined in Table 4.
For contact, filler plugs and rear accessories associated with this receptacle see EN 3646-002. For plugs and protective covers see EN 3646-008 and EN 3646-009 respectively.
Luft- und Raumfahrt - Elektrische Rundsteckverbinder mit Bajonettkupplung, Betriebstemperatur 175 °C oder 200 °C konstant - Teil 004: Fester Steckverbinder mit Mutternbefestigung - Produktnorm
Série aérospatiale - Connecteurs électriques circulaires à accouplement par baïonnettes, température d'utilisation 175 °C ou 200 °C continu - Partie 004: Embasse à fixation par écrou - Norme de produit
La présente Norme définit les caractéristiques des embases à fixation par écrou de la famille des connecteurs circulaires à accouplement par baïonnettes destinées à être utilisés dans une plage de températures comprises entre - 65 °C et 175 °C ou 200 °C continu.
Elle s'applique aux modèles définis dans le Tableau 4.
Pour les contacts, les obturateurs d'étanchéité et les accessoires arrière associés à ces embases, voir l’EN 3646-002. Pour les fiches et les bouchons de vol, voir respectivement les EN 3646-008 et EN 3646-009.
Aeronavtika - Konektorji, električni, okrogli, bajonetno sklapljanje, stalna delovna temperatura 175 °C ali 200 °C - 004. del: Podloga, pritrjena z matico - Standard za proizvod
Ta standard določa lastnosti podloge, pritrjene z matico, v družini okroglih bajonetno sklopljenih konektorjev, namenjenih uporabi pri obratovalni temperaturi od −65 °C do 175 °C ali stalni obratovalni temperaturi 200 °C.
Uporablja se za modele iz preglednice 4.
Za dodatke kontaktov, slepih čepov in izhodov, povezane s to podlogo, glejte standard EN 3646-002. Za čepe
in zaščitne kape glejte standarda EN 3646-008 in EN 3646-009.
General Information
- Status
- Published
- Publication Date
- 17-Nov-2015
- Withdrawal Date
- 30-May-2016
- Technical Committee
- ASD-STAN - Aerospace
- Drafting Committee
- ASD-STAN/D 2 - Electrical
- Current Stage
- 6060 - Definitive text made available (DAV) - Publishing
- Start Date
- 18-Nov-2015
- Completion Date
- 18-Nov-2015
Relations
- Effective Date
- 08-Jun-2022
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 25-Oct-2023
Overview
EN 3646-004:2015 is a European standard developed by CEN under the Aerospace and Defence Industries Association of Europe (ASD-STAN). It specifies the characteristics of jam-nut mounted receptacles within the family of bayonet coupling electrical circular connectors, designed for aerospace applications. These connectors are engineered to withstand continuous operating temperatures ranging from -65 °C to 175 °C or 200 °C, ensuring reliability in harsh aerospace environments.
This product standard applies to specific models outlined in the standard and complements related parts such as contacts, plugs, and protective covers defined in EN 3646-002, EN 3646-008, and EN 3646-009. EN 3646-004:2015 supersedes the 2013 edition, reflecting the latest technical requirements and industry practices.
Key Topics
Connector Type
Jam-nut mounted receptacles with bayonet coupling provide secure, quick mating/unmating in aerospace systems.Operating Temperature
Rated for continuous use between –65 °C and either 175 °C or 200 °C, suitable for high-temperature aerospace environments.Dimensions and Design
Detailed dimensional specifications and tolerances for multiple housing sizes ensure compatibility and interchangeability. Key features include:- Interface mating and rear dimensions per EN 3646-001
- Panel cut-out dimensions for mounting
- Tightening torque requirements for jam nuts
Material and Surface Treatments
Special aluminum alloys with black anodizing, nickel plating, or cadmium plating are used to enhance corrosion resistance and durability.Contact Types and Arrangements
Supports various contact types (male, female) and crimped or specialized contact barrel deliveries, compliant with EN 3155-002.Marking Requirements
Ensures traceability with manufacturer part number, date of manufacture, and maker’s mark on both product and packaging.Compliance and Standards Integration
EN 3646-004 references and aligns with other key aerospace standards including EN 3646-001 (Technical Specification), EN 3646-002 (Contact Arrangements), and ISO 3161 for thread dimensions.
Applications
This standard is crucial for the design, manufacture, and quality assurance of electrical connectors used in vital aerospace systems where high mechanical reliability and thermal stability are mandatory. Typical applications include:
- Aircraft electrical wiring harnesses
- Avionics and control systems
- High-temperature engine and auxiliary equipment connectors
- Environmental systems requiring robust, vibration-resistant connections
- Military and space aerospace equipment requiring standardized interface components
Manufacturers, aerospace system integrators, and maintenance organizations use EN 3646-004 to ensure connectors meet rigorous safety, performance, and interoperability criteria.
Related Standards
Adoption of EN 3646-004 is reinforced through interconnected standards, such as:
- EN 3646-001 – Technical specification covering general parameters for the aerospace bayonet coupling connector family.
- EN 3646-002 – Defines contact arrangements, performance requirements, and accessories like filler plugs.
- EN 3646-008 – Covers plug product standards complementing the receptacles of EN 3646-004.
- EN 3646-009 – Specifies protective covers to safeguard receptacles when not mated.
- EN 3155-002 – Lists types of electrical contacts used in aerospace connectors.
- ISO 3161 – Governs the thread dimensions relevant to jam-nut mounting hardware.
These standards collectively ensure modularity and consistent quality across the aerospace connector ecosystem.
Keywords: aerospace electrical connectors, bayonet coupling connectors, jam-nut receptacles, EN 3646-004, continuous operating temperature connectors, aerospace connector standards, high-temperature connectors, circular electrical connectors, aerospace component mounting, CEN aerospace standards.
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Frequently Asked Questions
EN 3646-004:2015 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Connectors, electrical, circular, bayonet coupling, operating temperature 175 °C or 200 °C continuous - Part 004: Receptacle, jam-nut mounting - Product standard". This standard covers: This Standard defines the characteristics of the jam-nut mounted receptacles of the family of bayonet coupling circular connectors, intended for use in an operating temperature range of –65 °C to 175 °C or 200 °C continuous. It applies to models defined in Table 4. For contact, filler plugs and rear accessories associated with this receptacle see EN 3646-002. For plugs and protective covers see EN 3646-008 and EN 3646-009 respectively.
This Standard defines the characteristics of the jam-nut mounted receptacles of the family of bayonet coupling circular connectors, intended for use in an operating temperature range of –65 °C to 175 °C or 200 °C continuous. It applies to models defined in Table 4. For contact, filler plugs and rear accessories associated with this receptacle see EN 3646-002. For plugs and protective covers see EN 3646-008 and EN 3646-009 respectively.
EN 3646-004:2015 is classified under the following ICS (International Classification for Standards) categories: 49.060 - Aerospace electric equipment and systems. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 3646-004:2015 has the following relationships with other standards: It is inter standard links to EN 3646-004:2013, EN ISO 6185-1:2018, EN ISO 10240:2024, EN ISO 10088:2009, EN ISO 21487:2018, EN ISO 11547:2018, EN ISO 6185-2:2018, EN ISO 11105:2017, FprEN 3646-004. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 3646-004:2015 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2016
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SIST EN 3646-004:2014
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Aerospace series - Connectors, electrical, circular, bayonet coupling, operating
temperature 175 °C or 200 °C continuous - Part 004: Receptacle, jam-nut mounting -
Product standard
Luft- und Raumfahrt - Elektrische Rundsteckverbinder mit Bajonettkupplung,
Betriebstemperatur 175 °C oder 200 °C konstant - Teil 004: Fester Steckverbinder mit
Mutternbefestigung - Produktnorm
Série aérospatiale - Connecteurs électriques circulaires à accouplement par
baïonenettes, température d'utilisation 175 °C ou 200 °C continu - Partie 004: Embasse
à fixation par écrou - Norme de produit
Ta slovenski standard je istoveten z: EN 3646-004:2015
ICS:
31.220.10 9WLþLLQYWLþQLFHNRQHNWRUML Plug-and-socket devices.
Connectors
49.060 /HWDOVNDLQYHVROMVND Aerospace electric
HOHNWULþQDRSUHPDLQVLVWHPL equipment and systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 3646-004
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2015
EUROPÄISCHE NORM
ICS 49.060 Supersedes EN 3646-004:2013
English Version
Aerospace series - Connectors, electrical, circular, bayonet
coupling, operating temperature 175 °C or 200 °C
continuous - Part 004: Receptacle, jam-nut mounting -
Product standard
Série aérospatiale - Connecteurs électriques circulaires Luft- und Raumfahrt - Elektrische Rundsteckverbinder
à accouplement par baïonnettes, température mit Bajonettkupplung, Betriebstemperatur 175 °C oder
d'utilisation 175 °C ou 200 °C continu - Partie 004: 200 °C konstant - Teil 004: Fester Steckverbinder mit
Embasse à fixation par écrou - Norme de produit Mutternbefestigung - Produktnorm
This European Standard was approved by CEN on 8 June 2015.
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, Former Yugoslav Republic of Macedonia, 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
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3646-004:2015 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Required characteristics . 4
5 Designation. 8
6 Marking . 9
7 Technical specification . 9
European foreword
This document (EN 3646-004:2015) has been prepared by the Aerospace and Defence Industries
Association of Europe - Standardization (ASD-STAN).
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 May 2016, and conflicting national standards shall be
withdrawn at the latest by May 2016.
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.
This document supersedes EN 3646-004:2013.
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, Former Yugoslav Republic of Macedonia,
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.
...
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