EN 3278:2026
(Main)Aerospace series - Sleeves, tubular, protruding head, in corrosion resisting steel, passivated (0,25 mm wall thickness)
Aerospace series - Sleeves, tubular, protruding head, in corrosion resisting steel, passivated (0,25 mm wall thickness)
This document specifies the characteristics and technical requirements for protruding head tubular sleeves, in corrosion resisting steel, which can be plain or provided with a series of annular grooves.
Passivated sleeves are for use in aerospace assemblies whose maximum operating temperature does not exceed 650 °C. It is important that the operating temperatures for aluminium pigmented sleeves do not exceed 230 °C.
Luft- und Raumfahrt - Hülsen, überstehender Kopf, aus korrosionsbeständigem Stahl, passiviert (Wanddicke 0,25 mm)
No Scope available
Série aérospatiale - Douilles tubulaires, tête saillante en acier résistant à la corrosion, passivées (épaisseur de paroi 0,25 mm)
Le présent document spécifie les caractéristiques et les exigences techniques des douilles tubulaires, à tête saillante, en acier résistant à la corrosion, qui peuvent être lisses ou munies d’une série de rainures circulaires.
Les douilles passivées sont prévues pour utilisation dans les assemblages aéronautiques dont la température maximale de fonctionnement ne dépasse pas 650 °C. Il est important de ne pas exposer les douilles pigmentées d’aluminium à des températures de fonctionnement supérieures à 230 °C.
Aeronavtika - Obojke, cevaste, štrleče glave, iz korozijsko odpornega jekla, pasivirane (debelina stene 0,25 mm)
Ta dokument določa značilnosti in tehnične zahteve za izbočene glave cevastih puš, izdelanih iz korozijsko odpornega jekla, ki so lahko gladke ali opremljene s serijo obročastih utorov.
Pasivirane puše so namenjene uporabi v letalskih sestavih, katerih največja obratovalna temperatura ne presega 650 °C. Pomembno je, da obratovalne temperature za aluminijem pigmentirane puše ne presegajo 230 °C.
General Information
- Status
- Published
- Publication Date
- 03-Mar-2026
- Technical Committee
- ASD-STAN - Aerospace
- Drafting Committee
- ASD-STAN/D 3/S 2 - Fasteners
- Current Stage
- 6060 - Definitive text made available (DAV) - Publishing
- Start Date
- 04-Mar-2026
- Completion Date
- 04-Mar-2026
Relations
- Effective Date
- 06-Dec-2023
Overview
EN 3278:2026 is a European standard developed by CEN for the aerospace sector, focusing on sleeves that are tubular, have a protruding head, and are manufactured from corrosion-resisting steel with a passivated finish and 0.25 mm wall thickness. These sleeves may be plain or feature annular grooves. The specification provides rigorous guidance on their configuration, material, manufacturing, and surface treatment to ensure optimal performance and durability in demanding aerospace applications.
This standard is particularly relevant for aerospace assemblies operating at temperatures up to 650 °C. For sleeves with aluminium pigmented coatings, the maximum recommended operating temperature is 230 °C.
Key Topics
- Product Scope: Tubular sleeves with protruding heads in corrosion-resistant steel, in both plain and grooved forms.
- Material Requirements: Use of specific grades of corrosion-resistant steel, with allowance for heat and precipitation-treated alloys as per referenced standards.
- Surface Treatment: Passivation processes and options for additional aluminium pigmented coatings; coatings specified for optimal corrosion resistance.
- Dimensional Specifications: Defined wall thickness (0.25 mm), range of diameters and lengths, and precise tolerances to ensure interchangeability in aerospace assemblies.
- Technical Attributes:
- Corrosion resistance and high-temperature stability
- Surface roughness specifications
- Manufacturing via drawing process to form a one-piece sleeve and head structure
- Marking and Traceability: Sleeves are marked as per EN 2424 to ensure clear identification and compliance within the aerospace supply chain.
Applications
EN 3278:2026 is widely adopted in the aerospace industry for:
- Fastening and Assembly: These sleeves are fundamental in joining operations, providing robust connections in structural and non-structural aircraft assemblies.
- High-Temperature Environments: Thanks to their corrosion resistance and thermal stability, these components are ideal for engine compartments, airframes, and other zones exposed to elevated temperatures.
- Maintenance and Retrofits: Standardized sleeves allow for trouble-free replacement and maintenance, supporting aircraft longevity and airworthiness.
- Custom and Mass Production: The availability of both plain and grooved forms, with detailed dimensions, supports custom solutions as well as mass production for OEMs.
Related Standards
- EN 2175: Specifies requirements for heat-resisting alloy materials often used for sleeves.
- EN 2424: Provides guidelines for marking aerospace products, essential for traceability and quality assurance.
- EN 2516: Details procedures for the passivation of corrosion-resisting steels, a critical surface treatment step.
- EN 4473: Describes requirements for aluminium pigmented coatings on fasteners, ensuring corrosion protection.
- ISO 2859-1: Outlines sampling procedures for inspection by attributes, used for the quality assessment of batches.
- SAE AMS2700: Standard for the passivation of corrosion-resistant steels, referenced for process compatibility.
- NAS 4006: Pertains to aluminium coatings, relevant for alternative surface treatment options.
By harmonizing materials, dimensions, and quality assurance procedures, EN 3278:2026 supports manufacturing consistency, regulatory compliance, and interoperability within the global aerospace supply chain. Its adoption helps ensure that critical components meet the stringent safety and durability requirements demanded by the aerospace industry.
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Frequently Asked Questions
EN 3278:2026 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Sleeves, tubular, protruding head, in corrosion resisting steel, passivated (0,25 mm wall thickness)". This standard covers: This document specifies the characteristics and technical requirements for protruding head tubular sleeves, in corrosion resisting steel, which can be plain or provided with a series of annular grooves. Passivated sleeves are for use in aerospace assemblies whose maximum operating temperature does not exceed 650 °C. It is important that the operating temperatures for aluminium pigmented sleeves do not exceed 230 °C.
This document specifies the characteristics and technical requirements for protruding head tubular sleeves, in corrosion resisting steel, which can be plain or provided with a series of annular grooves. Passivated sleeves are for use in aerospace assemblies whose maximum operating temperature does not exceed 650 °C. It is important that the operating temperatures for aluminium pigmented sleeves do not exceed 230 °C.
EN 3278:2026 is classified under the following ICS (International Classification for Standards) categories: 49.030.99 - Other fasteners. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 3278:2026 has the following relationships with other standards: It is inter standard links to EN 3278:2019. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 3278:2026 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 - Obojke, cevaste, štrleče glave, iz korozijsko odpornega jekla,
pasivirane (debelina stene 0,25 mm)
Aerospace series - Sleeves, tubular, protruding head, in corrosion resisting steel,
passivated (0,25 mm wall thickness)
Luft- und Raumfahrt - Hülsen, überstehender Kopf, aus korrosionsbeständigem Stahl,
passiviert (Wanddicke 0,25 mm)
Série aérospatiale - Douilles tubulaires, tête saillante en acier résistant à la corrosion,
passivées (épaisseur de paroi 0,25 mm)
Ta slovenski standard je istoveten z: EN 3278:2026
ICS:
49.030.99 Drugi vezni elementi Other fasteners
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 3278
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2026
EUROPÄISCHE NORM
ICS 49.030.99 Supersedes EN 3278:2019
English Version
Aerospace series - Sleeves, tubular, protruding head, in
corrosion resisting steel, passivated (0,25 mm wall
thickness)
Série aérospatiale - Douilles tubulaires, tête saillante Luft- und Raumfahrt - Hülsen, überstehender Kopf, aus
en acier résistant à la corrosion, passivées (épaisseur korrosionsbeständigem Stahl, passiviert (Wanddicke
de paroi 0,25 mm) 0,25 mm)
This European Standard was approved by CEN on 2 February 2026.
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 3278:2026 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Required characteristics . 5
4.1 Configuration — Dimensions — Tolerances . 5
4.2 Surface roughness . 5
4.3 Material . 5
4.4 Surface treatment . 5
4.5 Form code . 5
5 Technical requirements . 8
5.1 Manufacture . 8
5.2 Surface appearance . 8
5.3 Sampling . 8
6 Designation . 8
7 Marking . 8
European foreword
This document (EN 3278:2026) 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 3278:2019.
This document includes the following significant technical changes with respect to EN 3278:2019:
— normative references updated;
— 4.3 and 4.4 expanded with additional options.
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, Gree
...
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