EN 3155-016:2025
(Main)Aerospace series - Electrical contacts used in elements of connection - Part 016: Contacts, electrical, male, type A, crimp, class S - Product standard
Aerospace series - Electrical contacts used in elements of connection - Part 016: Contacts, electrical, male, type A, crimp, class S - Product standard
This document specifies the required characteristics, tests and tooling applicable to male electrical contacts, type A, crimp, class S, used in elements of connection according to EN 3155 002.
It is used together with EN 3155 001.
The tests as applied in this document do not permit the full qualification and are expected to be completed with associated components.
Luft- und Raumfahrt - Elektrische Kontakte zur Verwendung in Verbindungselementen - Teil 016: Elektrische Stiftkontakte, Typ A, crimpbar, Klasse S - Produktnorm
Dieses Dokument legt die Anforderungen, Prüfungen und Werkzeuge für elektrische Stiftkontakte, Typ A, crimpbar, Klasse S, zur Verwendung in elektrischen Verbindungselementen nach EN 3155 002 fest.
Es wird in Verbindung mit EN 3155 001 angewendet.
Bei den in diesem Dokument angewendeten Prüfungen ist keine vollständige Qualifikation zulässig; dies kann nur erwartet werden, wenn sie mit den zugehörigen Bauteilen durchgeführt werden.
Série aérospatiale - Contacts électriques utilisés dans les organes de connexion - Partie 016 : Contacts électriques, mâles, type A, à sertir, classe S - Norme de produit
Le présent document spécifie les caractéristiques requises, les essais et l’outillage applicables aux contacts électriques mâles, de type A, à sertir, de classe S, utilisés dans les organes de connexion suivant l’EN 3155-002.
Il est utilisé conjointement avec l’EN 3155-001.
Les essais tels qu’ils sont appliqués dans la présente norme ne permettent pas la qualification complète et doivent être complétés avec des composants associés.
Aeronavtika - Električni kontakti za uporabo v veznih elementih - 016. del: Kontakti, električni, moški, tip A, stisljivi, razred S - Standard za proizvod
Ta dokument določa zahtevane lastnosti, preskuse in orodja za moške električne kontakte tipa A, stisljive, razreda S, ki se uporabljajo v veznih elementih v skladu s standardom EN 3155-002. Uporablja se skupaj s standardom EN 3155-001. Preskusi, uporabljeni v tem dokumentu, ne dovoljujejo polne kvalifikacije in naj bi se jih dokončalo s povezanimi komponentami.
General Information
Relations
Overview
EN 3155-016:2025 is a CEN product standard in the Aerospace series that defines the required characteristics, tests and tooling for male electrical contacts - Type A, crimp, Class S used in elements of connection (per EN 3155-002). It is intended to be used together with EN 3155-001 (technical specification). The standard covers geometry, materials, surface treatment, permissible cables, crimp tooling, insertion/extraction tools, cable stripping and a defined set of test methods. Class S contacts are rated for an operating temperature range of −65 °C to 200 °C.
Key topics and technical requirements
- Contact geometry and mass: Dimensions and tolerances are specified (figures and Table 1) in millimetres and apply after surface treatment. Size designations include contact sizes 22, 20, 16 and 12.
- Material and finish: Contact bodies are copper alloy with gold plating over an appropriate undercoat; coating thickness/protection is referenced to EN 3155-001.
- Marking: Visual mark (dimple) on the front of the contact for identification.
- Permissible conductors and currents: Permissible cable sizes are listed (AWG equivalents), covering conductors from about AWG 26 to AWG 12 with rated test currents defined per size (e.g., up to ~23 A for larger conductors).
- Crimping and insertion tooling: Crimp tools shall conform to SAE AS22520 and use specified positioners (M22520 series) and selectors (Table 3). Insertion/extraction tools conform to SAE AS81969 (M81969 series).
- Cable preparation: Stripping lengths are prescribed by contact size (e.g., 4.0–6.8 mm depending on size).
- Tests: Electrical, mechanical and environmental tests reference the EN 2591 series (visual, contact resistance low level and at rated current, mechanical endurance, tensile strength of crimp, shock, vibration, salt mist, etc.). The standard notes that the tests herein do not by themselves permit full qualification and must be completed with associated components (e.g., connectors per EN 3708-003).
Applications and users
- Manufacturers of aerospace connectors and crimp contacts who need to design, produce and mark male Type A Class S contacts.
- Aerospace electrical design engineers and harness suppliers specifying contact performance and permissible conductor sizes.
- Test laboratories and quality/acceptance engineers performing EN 2591 series tests and tooling validation.
- Procurement and certification teams verifying conformity for aerospace installations requiring high-temperature Class S contacts.
Related standards
- EN 3155-001 (Technical specification) - to be used together with this part
- EN 3155-002 (Elements of connection) - application context
- EN 2591 series (test methods) - electrical, mechanical and environmental tests
- EN 2083 / EN 4434 (copper conductors) - conductor requirements
- SAE AS22520 (crimping tools), SAE AS81969 (insertion/extraction tools)
- EN 3708 series (connector assemblies)
Keywords: EN 3155-016:2025, aerospace electrical contacts, male type A crimp class S, crimping tools, contact resistance, EN 3155-001, EN 2591 test methods, connector contacts.
Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2025
Aeronavtika - Električni kontakti za uporabo v veznih elementih - 016. del:
Kontakti, električni, moški, tip A, stisljivi, razred S - Standard za proizvod
Aerospace series - Electrical contacts used in elements of connection - Part 016:
Contacts, electrical, male, type A, crimp, class S - Product standard
Luft- und Raumfahrt - Elektrische Kontakte zur Verwendung in Verbindungselementen -
Teil 016: Elektrische Stiftkontakte, Typ A, crimpbar, Klasse S - Produktnorm
Série aérospatiale - Contacts électriques utilisés dans les organes de connexion - Partie
016 : Contacts électriques, mâles, type A, à sertir, classe S - Norme de produit
Ta slovenski standard je istoveten z: EN 3155-016:2025
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.
EN 3155-016
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2025
EUROPÄISCHE NORM
ICS 49.060 Supersedes EN 3155-016:2019
English Version
Aerospace series - Electrical contacts used in elements of
connection - Part 016: Contacts, electrical, male, type A,
crimp, class S - Product standard
Série aérospatiale - Contacts électriques utilisés dans Luft- und Raumfahrt - Elektrische Kontakte zur
les organes de connexion - Partie 016 : Contacts Verwendung in Verbindungselementen - Teil 016:
électriques, mâles, type A, à sertir, classe S - Norme de Elektrische Stiftkontakte, Typ A, crimpbar, Klasse S -
produit Produktnorm
This European Standard was approved by CEN on 14 April 2025.
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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3155-016:2025 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 . 8
4.4 Material, surface treatment. 8
4.5 Permissible cables . 9
4.6 Tooling . 9
4.6.1 Crimping tools . 9
4.6.2 Insertion/extraction tools . 10
4.7 Cable stripping . 10
4.8 Tests . 11
4.9 Gauges . 13
5 Designation . 14
6 Marking . 14
7 Technical specification . 14
Bibliography . 15
European foreword
This document (EN 3155-016:2025) has been 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 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 February 2026, and conflicting national standards shall
be withdrawn at the latest by February 2026.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 3155-016:2019.
This document includes the following significant technical changes with respect to EN 3155-016:2019:
— Figure 1 and Figure 2: footnote for diameters E and G added;
— Table 1: values for dimension H updated;
— Table 6 “Tests”: remarks added for tests EN 2591-406 and EN 2591-509.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
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, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the United
Kingdom.
1 Scope
This document specifies the required characteristics, tests and tooling applicable to male electrical
contacts, type A, crimp, class S, used in elements of connection in accordance with EN 3155-002.
It is used together with EN 3155-001.
The tests as applied in this document do not permit the full qualification and are expected to be completed
with associated components.
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 2591-201, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 201: Contact resistance — Low level
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 2591-417, 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 3708-001, Aerospace series — Modular interconnection systems — Terminal junction systems —
Part 001: Technical specification
EN 4008-007, Aerospace series — Elements of electrical and optical connection — Crimping tools and
associated accessories — Part 007: Positioner for crimping tool M22520/2-01 — Product standard
EN 4008-008, Aerospace series — Elements of electrical and optical connection — Crimping tools and
associated accessories — Part 008: Positioner for crimping tool M22520/7-01 — Product standard
EN 4434, Aerospace series — Copper or copper alloy lightweight conductors for electrical cables — Product
standard (Normal and tight tolerances)
SAE AS22520, Crimping Tools, Wire Termination, General Specification
...
Frequently Asked Questions
EN 3155-016:2025 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Electrical contacts used in elements of connection - Part 016: Contacts, electrical, male, type A, crimp, class S - Product standard". This standard covers: This document specifies the required characteristics, tests and tooling applicable to male electrical contacts, type A, crimp, class S, used in elements of connection according to EN 3155 002. It is used together with EN 3155 001. The tests as applied in this document do not permit the full qualification and are expected to be completed with associated components.
This document specifies the required characteristics, tests and tooling applicable to male electrical contacts, type A, crimp, class S, used in elements of connection according to EN 3155 002. It is used together with EN 3155 001. The tests as applied in this document do not permit the full qualification and are expected to be completed with associated components.
EN 3155-016:2025 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 3155-016:2025 has the following relationships with other standards: It is inter standard links to EN 3155-016:2019. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase EN 3155-016:2025 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
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