oSIST prEN 3155-065:2026

• 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
• Public Enquiry End Date: 14-Sep-2026
• ICS: 49.060 - Aerospace electric equipment and systems
• 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
• Ref Project: prEN 3155-065 - 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: SIST 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: SIST 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: SIST EN ISO 15614-9:2026 - 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: SIST 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: SIST 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

oSIST prEN 3155-065:2026 is the Slovenian adoption of prEN 3155-065:2026, a draft European Standard from CEN for aerospace electrical contacts. It specifies the required characteristics, tests and tooling for male electrical contacts, type A, crimp, class S, size 8, used in elements of connection, so manufacturers, harness assemblers, and test laboratories know what to make, install, and verify.

What does oSIST prEN 3155-065:2026 specify?

oSIST prEN 3155-065:2026 covers a product standard for male electrical contacts, type A, crimp, class S, size 8, intended for aerospace connection elements in accordance with EN 3155-002. The contact can be fitted in EN 3645 series and EN 4165 series connectors, and the associated female contacts are covered by EN 3155-083.

The document is organized into clauses 1 to 7:

• Scope
• Normative references
• Terms and definitions
• Required characteristics
• Designation
• Marking
• Technical specification

It also includes a bibliography of related test methods, tools, connector standards, and cable standards. In practice, this means the document is not only about the contact itself, but also about the tooling, test methods, and naming needed to use it correctly.

What are the key requirements of oSIST prEN 3155-065:2026?

Geometry and identification

oSIST prEN 3155-065:2026 fixes the contact type, operating range, dimensions, mass, and colour coding. Class S corresponds to an operating temperature range from −65 °C to 200 °C, which tells users where the contact can be used without stepping outside its intended thermal envelope.

Clause 4.2 ties dimensions and mass to Figure 1 and Table 1, with dimensions applying after surface treatment. That matters because crimp contacts must fit the connector system and be measured after coating, not before.

Clause 4.3 assigns colour markings by code using ISO 8843. The red-red and red-white band combinations let production, inspection, and assembly teams identify the contact and barrel size quickly.

Materials, cables, and tooling

Clause 4.4 requires a copper alloy body and gold protective plating with an undercoat, with selective protection permitted. For buyers and quality teams, that points to the base material and surface finish that support electrical and environmental performance.

Clause 4.5 limits the permissible cables and conductor sizes for each contact/barrel size and gives the rated test current. This is important because the contact is qualified for specific wire sizes, not for any conductor a user might choose.

Clauses 4.6 and 4.7 define the tooling and preparation needed:

• Crimping tools must conform to SAE-AS22520 and match Table 4.
• Insertion/extraction tools must conform to SAE-AS81969 and match Table 5.
• Cable stripping must follow Table 6.

This means assembly is controlled end to end: the wire must be stripped to the stated length, crimped with the correct tool set, and installed or removed with the correct connector tool.

Qualification and test evidence

Clause 4.8 requires testing in accordance with EN 3155-001 and Table 7. The test list combines visual, dimensional, electrical, mechanical, environmental, and coating checks, including contact resistance, discontinuity, endurance at temperature, rapid temperature change, salt mist, vibration, shock, tensile strength of the crimped connection, plating porosity, coating thickness, coating adhesion, and magnetic permeability.

For qualification and maintenance of qualification, this tells a supplier which performances must be demonstrated and with which EN 2591 method. Several tests point to specific conditions, such as endurance at temperature for 1 000 h and the use of EN 3645-001 for shock and vibration set-ups.

Clause 4.10 also specifies connector arrangements for qualification tests and refers to TR 4865 for a suitable cable outlet. In practice, this supports repeatable test mounting so the cable stays aligned during qualification.

Designation and marking

Clause 5 gives the designation format and shows how to identify the male contact, contact size, barrel size, and delivery code. The delivery code is used for sealing sleeve supply options, which is directly relevant for ordering and traceability.

Clauses 6 and 7 route marking and technical specification back to EN 3155-001, so users apply the shared family rules for those aspects.

What terms does oSIST prEN 3155-065:2026 define?

The document uses the terms and definitions from EN 3155-001, but several terms are central to reading it correctly:

• Type A - a general-application contact type used in this part.
• Class S - the class with an operating temperature range from −65 °C to 200 °C.
• Crimp - a termination made by deforming the contact onto the conductor.
• AWG - American Wire Gauge, used here as the closest wire-size reference.
• LSP - Length of Selective Protection, a term used in the dimensional figure key.
• Delivery code - the designation element that states whether a sealing sleeve is supplied.
• Selective protection - partial protection on the contact surface, allowed by Clause 4.4.

Who uses oSIST prEN 3155-065:2026?

This standard is used by aerospace connector manufacturers, cable harness assemblers, and test laboratories. It is also relevant to quality managers and buyers who need to specify a contact by size, barrel size, cable range, finish, tooling, and qualification tests.

Its main practical uses are component selection, crimp process control, connector assembly, qualification testing, and product designation for procurement and traceability.

What changed in oSIST prEN 3155-065:2026 from the previous edition?

oSIST prEN 3155-065:2026 will supersede EN 3155-065:2019. The technical change stated in the document is the re-introduction of delivery codes for sealing sleeves in the designation.

Which standards are used with oSIST prEN 3155-065:2026?

The document relies on several companion standards and references:

• EN 3155-001 - shared technical specification for the contact family
• EN 3155-002 - list and utilization of contacts
• EN 3155-083 - associated female contact
• EN 3645-001 and EN 4165-001 - connector families used with the contact
• EN 2083 and EN 4434 - permitted conductor/cable standards
• ISO 8843 - colour identification system
• SAE-AS22520 and SAE-AS81969 - crimping and installation/removal tools
• TR 4831 - applicable crimping tools
• TR 4865 - suitable cable outlet for qualification tests
• EN 2591 series - test methods used in Table 7

What does the oSIST prEN 3155-065:2026 document contain?

The document contains a dimensional figure and tables for size, colour marking, permitted cables, crimp tools, insertion/extraction tools, cable stripping, and test selection. It also contains the designation structure and an example that shows how contact size, barrel size, and delivery code are combined.

Clause 4.8 is the technical core because it maps the contact to specific EN 2591 test methods. Clause 4.10 gives the qualification mounting arrangement, which helps users set up tests consistently.

For day-to-day work, the most useful parts are Table 1 for geometry, Table 2 for marking, Table 3 for conductor choice, Table 4 and Table 5 for tooling, and Table 7 for qualification and verification planning.

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
...