SIST EN 3155-004:2025

SLOVENSKI STANDARD
01-november-2025
Aeronavtika - Električni kontakti za uporabo v veznih elementih - 004. del:
Kontakti, električni, moški, tip A, stisljivi, razred T - Standard za proizvod
Aerospace series - Electrical contacts used in elements of connection - Part 004:
Contacts, electrical, male, type A, crimp, class T - Product standard
Luft- und Raumfahrt - Elektrische Kontakte zur Verwendung in Verbindungselementen -
Teil 004: Elektrische Stiftkontakte, Typ A, crimpbar, Klasse T - Produktnorm
Série aérospatiale - Contacts électriques utilisés dans les organes de connexion - Partie
004 : Contacts électriques, mâles, type A, à sertir, classe T - Norme de produit
Ta slovenski standard je istoveten z: EN 3155-004:2025
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 3155-004
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2025
EUROPÄISCHE NORM
ICS 49.060 Supersedes EN 3155-004:2019
English Version
Aerospace series - Electrical contacts used in elements of
connection - Part 004: Contacts, electrical, male, type A,
crimp, class T - Product standard
Série aérospatiale - Contacts électriques utilisés dans Luft- und Raumfahrt - Elektrische Kontakte zur
les organes de connexion - Partie 004 : Contacts Verwendung in Verbindungselementen - Teil 004:
électriques, mâles, type A, à sertir, classe T - Norme de Elektrische Stiftkontakte, Typ A, crimpbar, Klasse T -
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 3155-004:2025 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 by colour code . 8
4.4 Material, surface treatment . 9
4.5 Permissible cables . 10
4.6 Tooling . 10
4.6.1 Crimping tools . 10
4.6.2 Insertion/extraction tools . 12
4.7 Cable stripping . 12
4.8 Tests . 12
4.9 Gauges . 17
5 Designation . 17
6 Marking . 17
7 Technical specification . 17
Bibliography . 18

European foreword
This document (EN 3155-004:2025) 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 3155-004:2019.
This document includes the following significant technical changes with respect to EN 3155-004:2019:
— normative references updated;
— scope: extension of compatible connector classes in EN 2997 series;
— specification of contact types M and H in different clauses of the document;
— Figure 3 “Test sample configuration” updated.
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 004, type A, crimp, class T, used in elements of connection in accordance with EN 3155-002.
It is used together with EN 3155-001.
The associated female contacts are specified in EN 3155-005.
The contacts specified by this document are applicable for connector classes specified in EN 2997 series.
This document specifies two contact types (M and H) depending on connector class.
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 2591-416, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 416: Contact bending strength
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 2997 (all parts), Aerospace series — Connectors, electrical, circular, coupled by threaded ring, fire-
resistant or non fire-resistant, operating temperatures −65 °C to 175 °C continuous, 200 °C continuous,
260 °C peak
EN 3155-001, Aerospace series — Electrical contacts used in elements of connection — 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 AS81969/14A, Installing and Removal Tools, Connector Electrical Contact, Type III, Class 2,
Composition B
SAE AS81969/30B, Installing and Removal Tools, Connector Electrical Contact, Type II, Class 2,
Composition C, for Unwired Contacts
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 standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp/
— IEC Electropedia: available at https://www.electropedia.org/

Published by Society of Automotive Engineers (SAE), available at: https://www.sae.org/.
4 Required characteristics
4.1 Specific characteristics
Type A contacts are for general application and class T corresponds to an operating temperature range
from −65 °C to 260 °C.
4.2 Dimensions and mass
Dimensions and mass shall be in accordance with Figure 1, Figure 2 and Table 1.
Dimensions and tolerances are given in millimetres and apply after surface treatment.

Key
1 break allowed
2 one side only
3 in accordance with EN 3155-001 for Length of Selective Protection “LSP” definition
4 approximately spherical
Figure 1 — Dimensions
Figure 2 — Barrel, contacts 16–18 and 12–12
Table 1 — Dimensions
Size A B C D E ⌀ F ⌀ G ⌀ H ⌀ J ⌀ K ⌀ L M N ⌀ P ⌀ S ⌀ T Mass
g
Contact Barrel
max.        max.
13,94 4,34 3,30 0,84 1,98 1,04 1,27 1,98 2,62 1,68 4,75 1,73 0,81 0,51
20 20 18,29 — 0,30
13,79 4,06 3,17 0,74 1,93 0,99 1,22 1,93 2,54 1,57 3,94 1,35 0,66 0,23
13,94 4,34 3,30 0,84 1,98 1,04 1,35 1,98 2,62 1,68 4,75
...