oSIST prEN 3155-066:2026
(Main)Aerospace series - Electrical contacts used in elements of connection - Part 066: Contacts, electrical, female, type A, crimp, class S, size 8 - Product standard
General Information
- Abstract
This document specifies the required characteristics, tests and tooling applicable to female electrical contacts, type A, crimp, class S, size 8, used in elements of connection in accordance with EN 3155-002.
It can be used together with EN 3155-001.
The associated male contacts are specified in EN 3155-065.
- Status
- Not Published
- Public Enquiry End Date
- 14-Sep-2026
- Technical Committee
- I13 - Imaginarni 13
- Current Stage
- 4020 - Public enquire (PE) (Adopted Project)
- Start Date
- 15-Jul-2026
- Due Date
- 02-Dec-2026
- Completion Date
- 15-Sep-2026
Overview
oSIST prEN 3155-066:2026 is a draft European standard developed by SIST, focusing on aerospace electrical connection technology. This document defines the characteristics, test requirements, and tooling for female electrical contacts, type A, crimp, class S, size 8. These contacts are intended for use in connection elements in accordance with EN 3155-002, and are vital components in modern aerospace electric equipment and systems.
This standard helps ensure compatibility, reliability, and performance of female type A crimp contacts within the aerospace industry. It addresses technical requirements in line with the broader EN 3155 series and is designed to be used together with standards such as EN 3155-001 and the corresponding male contacts standard, EN 3155-065.
Key Topics
Product Definition and Scope
The standard details the necessary features and testing methods for size 8, class S female electrical contacts, including:- Requirements for material (copper alloy with gold undercoat)
- Marking by color code in line with ISO 8843
- Applicable cable types and sizes
Performance Class and Temperature Range
- Class S contacts are designed for applications demanding high reliability over a broad temperature range (-65 °C to +200 °C).
Testing and Qualification
- Specifies the test procedures to verify electrical, mechanical, and environmental properties, including visual inspection, contact resistance, endurance, and vibration.
- References EN 2591 test methods for contact resistance, temperature cycling, salt mist exposure, and more.
Tooling Compatibility
- Outlines required crimping and insertion/extraction tools compliant with MIL-DTL-22520 and MIL-I-81969 standards.
- Ensures proper installation and maintenance in accordance with aerospace requirements.
Applications
These female crimp electrical contacts are crucial in a wide range of aerospace electrical systems. Their main applications include:
Aerospace Connectors
Used extensively in connector assemblies for wiring harnesses in aircraft, satellites, and other aerospace vehicles for reliable signal and power transmission.System Integration
Essential in systems needing high vibration resistance, tolerance to broad temperature variations, and demanding electrical performance.Maintenance and Upgrades
The use of industry-standard tools and clear marking ensures ease of installation, inspection, and replacement during regular maintenance cycles or system upgrades.Interchangeability
Ensures compatibility with existing aerospace connection elements through standardized dimensions and requirements, supporting efficient system integration and logistics.
Related Standards
To ensure comprehensive compliance and interoperability, users of oSIST prEN 3155-066:2026 should be aware of the following related aerospace standards:
- EN 3155-001: General technical specification for electrical contacts used in connection elements.
- EN 3155-002: List and utilization guide for various contact types.
- EN 3155-065: Product standard for associated male type A, crimp, class S, size 8 contacts.
- EN 2083: Standard covering copper or copper alloy conductors for electrical cables.
- EN 2591 Series: Extensive set of test methods for evaluating electrical and optical connection elements, including tests for visual inspection, dimensions, endurance, resistance, and environmental factors.
- MIL-DTL-22520: Specification for crimping tools used in termination processes.
- MIL-I-81969: Standard for insertion and extraction tools for electrical contacts.
- ISO 8843: System for identification of crimp-removable contacts.
For robust designs and reliable performance in aerospace electrical connections, adherence to oSIST prEN 3155-066:2026, alongside these related standards, is essential. This ensures maintenance of high-quality, safe, and compatible connection technologies across the aerospace sector.
Relations
- Effective Date
- 09-Feb-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
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Frequently Asked Questions
oSIST prEN 3155-066:2026 is a draft published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Electrical contacts used in elements of connection - Part 066: Contacts, electrical, female, type A, crimp, class S, size 8 - Product standard". This standard covers: This document specifies the required characteristics, tests and tooling applicable to female electrical contacts, type A, crimp, class S, size 8, used in elements of connection in accordance with EN 3155-002. It can be used together with EN 3155-001. The associated male contacts are specified in EN 3155-065.
This document specifies the required characteristics, tests and tooling applicable to female electrical contacts, type A, crimp, class S, size 8, used in elements of connection in accordance with EN 3155-002. It can be used together with EN 3155-001. The associated male contacts are specified in EN 3155-065.
oSIST prEN 3155-066:2026 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.
oSIST prEN 3155-066:2026 has the following relationships with other standards: It is inter standard links to SIST EN IEC 61400-8:2024, SIST EN ISO/ASTM 52909:2023, SIST EN ISO 52909:2024, SIST EN 17533:2020. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
oSIST prEN 3155-066:2026 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-september-2026
Aeronavtika - Električni kontakti za uporabo v veznih elementih - 066. del:
Kontakti, električni, ženski, tip A, nagubani, razred S, velikost 8 - Standard za
proizvod
Aerospace series - Electrical contacts used in elements of connection - Part 066:
Contacts, electrical, female, type A, crimp, class S, size 8 - Product standard
Luft- und Raumfahrt - Elektrische Kontakte zur Verwendung in Verbindungselementen -
Teil 066: Elektrische Buchsenkontakte, Typ A, crimpbar, Klasse S, Größe 8 -
Produktnorm
Série aérospatiale - Contacts électriques utilisés dans les organes de connexion - Partie
066 : Contacts électriques, femelles, type A, à sertir, classe S, taille 8 - Norme de produit
Ta slovenski standard je istoveten z: prEN 3155-066
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
English Version
Aerospace series - Electrical contacts used in elements of
connection - Part 066: Contacts, electrical, female, type A,
crimp, class S, size 8 - Product standard
Luft- und Raumfahrt - Elektrische Kontakte zur
Verwendung in Verbindungselementen - Teil 066:
Elektrische Buchsenkontakte, 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 3155-066:2026 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
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 . 8
4.5 Permissible cables . 8
4.6 Tooling . 8
4.6.1 Crimping tools . 8
4.6.2 Insertion/Extraction tools . 9
4.7 Cable stripping . 9
4.8 Tests . 9
4.9 Gauges . 11
5 Designation . 11
6 Marking . 11
7 Technical specification . 11
Bibliography . 12
European foreword
This document (prEN 3155-066:2026) 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.
Introduction
This document specifies the characteristics of female crimp contacts.
1 Scope
This document specifies the required characteristics, tests and tooling applicable to female electrical
contacts, type A, crimp, class S, size 8, used in elements of connection in accordance with EN 3155-002.
It can be used together with EN 3155-001.
The associated male contacts are specified in EN 3155-065.
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 2591-402, 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 2591-415, Aerospace series — Elements of electrical and optical connections — Test methods —
Part 415: Test probe damage (female contacts)
EN 2591-417, Aerospace series — E
...