SIST EN 3155-071:2026
(Main)Aerospace series - Electrical contacts used in elements of connection - Part 071: Contacts, electrical, female, type A, crimp, class S - Product standard
Aerospace series - Electrical contacts used in elements of connection - Part 071: Contacts, electrical, female, type A, crimp, class S - Product standard
This document specifies the required characteristics, tests and tooling applicable to female electrical contacts 071, type A, crimp, class S used in elements of connection according to EN 3155 002.
It is intended to be used together with EN 3155 001.
The associated male contacts are specified in EN 3155 008 and EN 3155 070.
Luft- und Raumfahrt - Elektrische Kontakte zur Verwendung in Verbindungselementen - Teil 071: Elektrische Buchsenkontakte, Typ A, crimpbar, Klasse S - Produktnorm
No Scope available
Série aérospatiale - Contacts électriques utilisés dans les organes de connexion - Partie 071 : Contacts électriques, femelles, 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 femelles 071, de type A, à sertir, de classe S, utilisés dans les organes de connexion conformes à l’EN 3155 002.
Il est destiné à être utilisé conjointement avec l’EN 3155 001.
Les contacts mâles associés sont spécifiés dans l’EN 3155 008 et l’EN 3155 070.
Aeronavtika - Električni kontakti za uporabo v veznih elementih - 071. del: Kontakti, električni, ženski, tip A, nagubani, razred S - Standard za proizvod
Ta dokument določa zahtevane lastnosti, preskuse in orodja, ki se uporabljajo za ženske električne kontakte 071, tip A, krimp, razred S, uporabljene v povezovalnih elementih v skladu z EN 3155 002.
Namenjen je uporabi skupaj z EN 3155 001.
Pripadajoči moški kontakti so določeni v EN 3155 008 in EN 3155 070.
General Information
- Status
- Published
- Public Enquiry End Date
- 23-May-2023
- Publication Date
- 06-Apr-2026
- Technical Committee
- I13 - Imaginarni 13
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 27-Mar-2026
- Due Date
- 01-Jun-2026
- Completion Date
- 07-Apr-2026
Relations
- Effective Date
- 18-Mar-2026
- Effective Date
- 18-Mar-2026
- Effective Date
- 18-Mar-2026
- Effective Date
- 18-Mar-2026
- Effective Date
- 18-Mar-2026
- Effective Date
- 18-Mar-2026
- Effective Date
- 18-Mar-2026
- Effective Date
- 18-Mar-2026
- Effective Date
- 18-Mar-2026
- Effective Date
- 18-Mar-2026
- Effective Date
- 18-Mar-2026
- Effective Date
- 19-Jan-2023
Overview
FprEN 3155-071 is a CEN draft product standard in the Aerospace series that specifies the required characteristics, tests and tooling for female electrical contacts 071, 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) and references associated male contact standards (EN 3155-008, EN 3155-070). This standard targets high-reliability aerospace connector contacts where temperature, mechanical endurance and electrical performance are critical.
Key topics and requirements
- Scope and use: Defines product-level requirements for female, type A, crimp contacts, class S (operating temperature range −65 °C to +200 °C).
- Dimensions and mass: Detailed dimensional requirements and tolerances (figures and tables) apply after surface treatment; active area and engagement points defined per EN 3155-001.
- Materials & plating: Body material specified as copper alloy with gold plating over an appropriate undercoat; coating thickness/protection referenced to EN 3155-001.
- Color coding: Band marking per ISO 8843 (Table 2) for rapid identification of contact sizes.
- Permissible cables: Acceptable conductor sizes and rated test currents listed (AWG equivalents and ASD codes in Table 3).
- Tooling:
- Crimping tools conform to SAE AS 22520 (M22520 series positioners/selectors).
- Insertion/extraction tools conform to SAE AS 81969 (M81969 series), with recommended part numbers for wired/unwired contacts.
- Cable preparation: Specified stripped lengths for reliable crimp termination.
- Tests and qualification: Detailed list referencing EN 2591 series tests - contact resistance, endurance, high-temperature aging (T = 200 ± 2 °C, 1 000 h), rapid temperature change (200 °C ↔ −65 °C), shock, vibration (EN 4165 modules used for size 22 test arrangements), tensile/crimp pull-out, plating adhesion and porosity, etc.
- Gauging, marking & designation: Gauges, marking conventions and designation blocks follow EN 3155-001.
Practical applications and users
- Who uses it: Connector and contact manufacturers, aerospace harness and cable assembly shops, avionics designers, quality/qualification engineers, procurement and maintenance teams in civil and military aerospace sectors.
- Why it matters: Ensures interchangeability, reliable electrical and mechanical performance in harsh aerospace environments, and compliance with recognized crimping and tool standards for production and in-service maintenance.
- Practical value: Guides selection of contacts, crimp tooling (M22520), insertion/extraction tools (M81969), test programs for qualification, and inspection criteria for production and repair.
Related standards
- EN 3155-001 (technical specification)
- EN 3155-002 (contact list/utilization)
- EN 3155-008 / EN 3155-070 (male contacts)
- EN 2083, EN 4434 (conductors)
- EN 4165 (connector modules)
- EN 2591 series (test methods)
- ISO 8843, SAE AS 22520, SAE AS 81969
Keywords: FprEN 3155-071, aerospace electrical contacts, female type A crimp class S, crimping tools M22520, insertion/extraction M81969, EN 3155 product standard.
Get Certified
Connect with accredited certification bodies for this standard

DEKRA North America
DEKRA certification services in North America.
Eagle Registrations Inc.
American certification body for aerospace and defense.

Element Materials Technology
Materials testing and product certification.
Sponsored listings
Frequently Asked Questions
SIST EN 3155-071:2026 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Electrical contacts used in elements of connection - Part 071: Contacts, electrical, female, type A, crimp, class S - Product standard". This standard covers: This document specifies the required characteristics, tests and tooling applicable to female electrical contacts 071, type A, crimp, class S used in elements of connection according to EN 3155 002. It is intended to be used together with EN 3155 001. The associated male contacts are specified in EN 3155 008 and EN 3155 070.
This document specifies the required characteristics, tests and tooling applicable to female electrical contacts 071, type A, crimp, class S used in elements of connection according to EN 3155 002. It is intended to be used together with EN 3155 001. The associated male contacts are specified in EN 3155 008 and EN 3155 070.
SIST EN 3155-071:2026 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.
SIST EN 3155-071:2026 has the following relationships with other standards: It is inter standard links to SIST EN 2591-220:2006, SIST EN 3155-070:2008, SIST EN 3682-001:2014, SIST EN 3155-070:2019, SIST EN 3545-002:2008, SIST EN 3155-002:2024, SIST EN 3545-001:2008, SIST EN 3155-070:2015, SIST EN 4165-001:2015, SIST EN 2591-227:2015, SIST EN 4165-003:2016, SIST EN 3155-071:2019. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 3155-071:2026 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-maj-2026
Aeronavtika - Električni kontakti za uporabo v veznih elementih - 071. del:
Kontakti, električni, ženski, tip A, nagubani, razred S - Standard za proizvod
Aerospace series - Electrical contacts used in elements of connection - Part 071:
Contacts, electrical, female, type A, crimp, class S - Product standard
Luft- und Raumfahrt - Elektrische Kontakte zur Verwendung in Verbindungselementen -
Teil 071: Elektrische Buchsenkontakte, Typ A, crimpbar, Klasse S - Produktnorm
Série aérospatiale - Contacts électriques utilisés dans les organes de connexion - Partie
071 : Contacts électriques, femelles, type A, à sertir, classe S - Norme de produit
Ta slovenski standard je istoveten z: EN 3155-071:2026
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 3155-071
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2026
EUROPÄISCHE NORM
ICS 49.060 Supersedes EN 3155-071:2019
English Version
Aerospace series - Electrical contacts used in elements of
connection - Part 071: Contacts, electrical, female 071,
type A, crimp, class S - Product standard
Série aérospatiale - Contacts électriques utilisés dans Luft- und Raumfahrt - Elektrische Kontakte zur
les organes de connexion - Partie 071 : Contacts Verwendung in Verbindungselementen - Teil 071:
électriques, femelles 071, type A, à sertir, classe S - Elektrische Buchsenkontakte 071, Typ A, crimpbar,
Norme de produit Klasse S - Produktnorm
This European Standard was approved by CEN on 29 September 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
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3155-071:2026 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 . 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 . 10
4.9 Gauges . 13
5 Designation . 13
6 Marking . 13
7 Technical specification . 13
Bibliography . 14
European foreword
This document (EN 3155-071:2026) 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 September 2026, and conflicting national standards
shall be withdrawn at the latest by September 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 3155-071:2019.
EN 3155-071:2019:
— Table 5 Insertion/extraction tools updated and notes added;
— document editorially revised.
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 female electrical
contacts 071, type A, crimp, class S used in elements of connection according to EN 3155-002.
It is intended to be used together with EN 3155-001.
The associated male contacts are specified in EN 3155-008 and EN 3155-070.
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 2591-415, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 415: Test probe damage (female contact)
EN 2591-417, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 417: Tensile strength (crimped connection)
EN 2591-418, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 418: Gauge insertion/extraction forces (female contacts)
EN 2591-502, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 502: Restricted entry
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 4165 (all parts), Aerospace series — Connectors, electrical, rectangular, modular — Operating
temperature 175 °C continuous
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
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 3155-001 apply.
ISO
...




Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...