prEN 3155-065

• Abstract:

  This document specifies the required characteristics, tests and tooling applicable to male electrical contacts, type A, crimp, class S, size 8, used in elements of connection in accordance with EN 3155-002 (this contact can be fitted in connectors EN 3645 series and EN 4165 series).; It can be used together with EN 3155-001.; The associated female contacts are specified in EN 3155-083.

• Status: Not Published
• Publication Date: 02-Jan-2028
• ICS: 49.060 - Aerospace electric equipment and systems
• Technical Committee: ASD-STAN - Aerospace
• Drafting Committee: ASD-STAN/D 2/S 3 - Elements of Connection (Connectors, Contacts, rear accessories, crimping tools
• Current Stage: 4020 - Submission to enquiry - Enquiry
• Start Date: 02-Jul-2026
• Completion Date: 02-Jul-2026
• Ref Project: oSIST prEN 3155-065:2026 - Aerospace series - Electrical contacts used in elements of connection - Part 065: Contacts, electrical, male, type A, crimp, class S, size 8 Product standard

• Referred By: EN ISO 15614-9:2025 - Specification and qualification of welding procedures for metallic materials - Welding procedure test - Part 9: Underwater hyperbaric wet welding (ISO 15614-9:2025)
• Effective Date: 28-Jan-2026
• Referred By: EN ISO 25239-4:2020 - Friction stir welding - Aluminium - Part 4: Specification and qualification of welding procedures (ISO 25239-4:2020)
• Effective Date: 28-Jan-2026
• Referred By: EN ISO 25239-5:2020 - Friction stir welding - Aluminium - Part 5: Quality and inspection requirements (ISO 25239-5:2020)
• Effective Date: 28-Jan-2026
• Referred By: EN ISO 15614-2:2025 - Specification and qualification of welding procedures for metallic materials - Welding procedure test - Part 2: Arc welding of aluminium and its alloys (ISO 15614-2:2025)
• Effective Date: 28-Jan-2026
• Revises: EN 3155-065:2019 - Aerospace series - Electrical contacts used in elements of connection - Part 065: Contacts, electrical, male, type A, crimp, class S, size 8 - Product standard
• Effective Date: 28-Jan-2023

Overview

prEN 3155-065 is a draft European standard developed by CEN, part of the aerospace series for electrical contacts used in connection elements. This standard defines the required characteristics, test methods, and associated tooling for male electrical contacts, type A, crimp, class S, size 8. These contacts are intended for use with elements of connection according to EN 3155-002, specifically to be fitted in EN 3645 and EN 4165 series connectors.

The scope covers both the product's essential requirements and conditions for qualification, providing practical guidance for manufacturers, suppliers, and aerospace engineers engaged in the design and testing of high-reliability electrical interconnections.

Key Topics

• Product Classification:

  • Male electrical contacts - type A, crimp style, class S, and size 8.
  • Suitable for use within aerospace-grade electrical connectors.
  • Class S allows operation in temperatures from −65 °C up to 200 °C.

• Interoperability:

  • Designed for compatibility with connectors from the EN 3645 and EN 4165 series.
  • Reference to associated female contacts (EN 3155-083) ensures proper system integration.

• Required Characteristics:

  • Material: Typically copper alloy with protective gold plating, as per EN 3155-001.
  • Markings: Utilizes color codes for size and barrel identification, aligned with ISO 8843.
  • Cable Accommodation: Specifies permissible cable sizes and types for safe operation.
  • Contact dimensions, mass, and tolerances specified to maintain interchangeability.

• Testing and Quality Assurance:

  • Rigorous testing protocols in line with EN 3155-001 and the EN 2591 series (covering aspects such as endurance, vibration, temperature cycling, resistance, and mechanical strength).
  • Requirements for crimp tools (per SAE-AS22520) and insertion/extraction tools (per SAE-AS81969).
  • Mandates cable stripping requirements and marking standards.

Applications

• Aerospace Electrical Systems:

  • Widely used in aircraft wiring harnesses, avionics, and electronic modules where secure, reliable, and high-performance wire-to-connector solutions are critical.
  • Compatible with both circular (EN 3645) and rectangular modular (EN 4165) aerospace connectors, making these male contacts suitable for a broad range of applications within civil and military aviation.

• Manufacturing and Assembly:

  • Specifies tooling and handling instructions to enable repeatable high-integrity crimping, ensuring long-term connection reliability in demanding environments.
  • Used by manufacturers and maintenance providers to ensure interoperability and compliance with European aerospace standards.

• Testing and Qualification:

  • Applied during quality control and validation of electrical connectors prior to release into service.
  • Ensures connectors and contacts meet necessary thermal, mechanical, and environmental stress requirements.

Related Standards

To ensure full compliance and system compatibility, prEN 3155-065 should be used in conjunction with:

• EN 3155-001: Technical specification for general requirements.
• EN 3155-002: List and utilization guide for electrical contacts.
• EN 3155-083: Standard for corresponding female contacts.
• EN 3645 and EN 4165: Connector series standards.
• EN 2591 Series: Test methods for electrical and optical connection elements.
• SAE-AS22520: Crimping tool requirements.
• SAE-AS81969: Insertion and removal tool specifications.

By adhering to prEN 3155-065 and the referenced standards, organizations can achieve robust, standardized electrical connections vital for aerospace safety, system performance, and international market access.

Keywords: prEN 3155-065, aerospace electrical contacts, size 8, crimp, class S, EN 3645, EN 4165, connector standard, electrical connection, CEN, European standard, male contact, test methods, aerospace series.

SLOVENSKI STANDARD
01-september-2026
Aeronavtika - Električni kontakti za uporabo v veznih elementih - 065. del:
Kontakti, električni, moški, tip A, nagubani, razred S, velikost 8 - Standard za
proizvod
Aerospace series - Electrical contacts used in elements of connection - Part 065:
Contacts, electrical, male, type A, crimp, class S, size 8 Product standard
Luft- und Raumfahrt - Elektrische Kontakte zur Verwendung in Verbindungselementen -
Teil 065: Elektrische Stiftkontakte, Typ A, crimpbar, Klasse S, Größe 8 - Produktnorm
Série aérospatiale - Contacts électriques utilisés dans les organes de connexion - Partie
065 : Contacts électriques, mâles, type A, à sertir, classe S, taille 8 - Norme de produit
Ta slovenski standard je istoveten z: prEN 3155-065
ICS:
49.060 Letalska in vesoljska Aerospace electric
električna oprema in sistemi equipment and systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2026
ICS 49.060 Will supersede EN 3155-065:2019
English Version
Aerospace series - Electrical contacts used in elements of
connection - Part 065: Contacts, electrical, male, type A,
crimp, class S, size 8 Product standard
Luft- und Raumfahrt - Elektrische Kontakte zur
Verwendung in Verbindungselementen - Teil 065:
Elektrische Stiftkontakte, Typ A, crimpbar, Klasse S,
Größe 8 - Produktnorm
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee ASD-
STAN.
If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 3155-065:2026 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 5
4 Required characteristics . 6
4.1 Specific characteristics . 6
4.2 Dimensions and mass . 6
4.3 Marking by colour code . 7
4.4 Material, surface treatment . 7
4.5 Permissible cables . 7
4.6 Tooling . 8
4.6.1 Crimping tools . 8
4.6.2 Insertion/Extraction tools . 8
4.7 Cable stripping . 8
4.8 Tests . 9
4.9 Gauges . 11
4.10 Connectors for qualification tests . 11
5 Designation . 11
6 Marking . 12
7 Technical specification . 12
Bibliography . 13

European foreword
This document (prEN 3155-065:2026) has been prepared prepared by ASD-STAN.
After enquiries and votes carried out in accordance with the rules of this Association, this document has
received the approval of the National Associations and the Official Services of the member countries of
ASD-STAN, prior to its presentation to CEN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 3155-065:2019.
EN 3155-065:2019:
— re-introduction of delivery codes for sealing sleeves in the designation (Clause 5).
1 Scope
This document specifies the required characteristics, tests and tooling applicable to male electrical
contacts, type A, crimp, class S, size 8, used in elements of connection in accordance with EN 3155-002
(this contact can be fitted in connectors EN 3645 series and EN 4165 series).
It can be used together with EN 3155-001.
The associated female contacts are specified in EN 3155-083.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 2083, Aerospace series — Copper or copper alloy conductors for electrical cables — Product standard
EN 2591-101, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 101: Visual examination
EN 2591-102, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 102: Examination of dimensions and mass
EN 2591-202, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 202: Contact resistance at rated current
EN 2591-204, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 204: Discontinuity of contacts in the microsecond range
EN 2591-210, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 210: Electrical overload
EN 2591-301, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 301: Endurance at temperature
EN 2591-305, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 305: Rapid change of temperature
EN 2591-307, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 307: Salt mist
EN 2591-319, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 319: Gastightness of solderless wrapped connections
EN 2591-402, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 402: Shock
EN 2591-403, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 403: Sinusoidal and random vibration
EN 2591-406, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 406: Mechanical endurance
EN 2591-417, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 417: Tensile strength (crimped connection)
EN 2591-503, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 503: Contact deformation after crimping
EN 2591-507, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 507: Plating porosity
EN 2591-508, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 508: Measurement of thickness of coating on contacts
EN 2591-509, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 509: Adhesion of coating on contacts
EN 2591-513, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 513: Magnetic permeability
EN 3155-001, Aerospace series — Electrical contacts used in elements of connection — Part 001: Technical
specification
EN 3645-001, Aerospace series — Connectors, electrical, circular, scoop-proof, triple start threaded
coupling, operating temperature 175 °C or 200 °C continuous — Part 001: Technical specification
EN 4434, Aerospace series — Copper or copper alloy lightweight conductors for electrical cables — Product
standard (Normal and tight tolerances)
ISO 8843, Aircraft — Crimp-removable contacts for electrical connectors — Identification system
SAE-AS22520, Crimping tools, wire termination, general specification for
SAE-AS81969, Installing and removal tools, connector electrical contact, general specification for
TR 4831, Aerospace series — Applicable crimping tools for electrical contact product standards
EN 3155-065 and EN 3155-083
TR 4865, Aerospace series — Suitable cable outlet to be mated on EN 3645 connector (layout type: 21R48)
for the qualification of electrical contact product standards EN 3155-065 and EN 3155-083
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 3155-001 apply.
ISO and IEC maintain terminology databases for use in standardiz
...