EN 2606:2009
(Main)Aerospace series - 60° interface for adaptors, threaded, with lockring - Geometric configuration
Aerospace series - 60° interface for adaptors, threaded, with lockring - Geometric configuration
This standard specifies the dimensional characteristics of the 60° interface for adaptors, threaded, with lockring, assembly with elastomer O ring, for aerospace applications.
This standard applies to all adaptors, threaded, with lockring, assembled to EN 2607 and used in fluid systems with a nominal pressure of 28 000 kPa for which a metric size coupling with a 60° conical sealing surface has been selected.
Luft- und Raumfahrt - 60°-Anschlusszapfen für gerade Einschraubverschraubungen mit Sicherungsring - Konstruktionsblatt
Diese Norm legt die Maße von 60°-Anschlusszapfen für gerade Einschraubverschraubungen mit
Sicherungsring und Elastomer-O-Ring zur Verwendung in der Luft- und Raumfahrt fest.
Diese Norm gilt für alle geraden Einschraubverschraubungen mit Sicherungsring, die nach EN 2607
aufgebaut sind und in Hydraulikanlagen mit 28 000 kPa Höchstdruck verwendet werden, für die eine
metrische Verschraubung mit 60°-Konus-Dichtfläche gewählt wurde.
Série aérospatiale - Raccords avec cône d'étanchéité 60° pour raccords droits, filetés, avec bague de sécurité - Configuration géométrique
Aeronavtika - Vmesnik 60° za adapterje, z navojem, z zaklepnim obročkom - Geometrijski načrt
General Information
- Status
- Published
- Publication Date
- 21-Jul-2009
- Withdrawal Date
- 30-Jan-2010
- Technical Committee
- ASD-STAN - Aerospace
- Drafting Committee
- ASD-STAN/D 3 - Mechanical
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 21-Jan-2025
- Completion Date
- 09-Feb-2026
Relations
- Refers
prEN 415-2 - Packaging machines safety - Part 2: Pre-formed rigid container packaging machines - Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
Overview
EN 2606:2009 - "Aerospace series - 60° interface for adaptors, threaded, with lockring - Geometric configuration" is a CEN standard that defines the dimensional and geometric requirements for metric-size, 60° conical sealing threaded adaptors with a lockring, used in aerospace fluid systems. The standard covers adaptors assembled with an elastomer O‑ring (per EN 2607) and applies to couplings selected for a nominal pressure of 28 000 kPa (28 MPa).
Key topics and technical requirements
- Geometric configuration and dimensions: Specifies the interface geometry and dimensional characteristics (see Figure 1 and Table 1 in the standard). Table 1 provides port dimension codes tied to nominal pipe outside diameters and the corresponding thread, diameter and length parameters.
- 60° conical sealing surface: Defines the mating surface geometry for reliable metal-to-metal/conical sealing combined with an elastomer O‑ring.
- Threading and fit: Threads conform to MJ thread requirements (ISO 5855‑1 and ISO 5855‑3 where applicable) for compatibility and interchangeability.
- Lockring and installation position: Specifies lockring location after installation in the port (reference to EN 2602 for port geometry and installation criteria).
- Surface finish: Surface roughness requirements are referenced to the geometric drawing (Figure 1) unless other design documentation specifies different values.
- Designation and identification: Provides a designation format (example: EN2606‑10 plus port code) to identify specific adaptor configurations.
Applications
EN 2606:2009 is intended for use where a metric-size coupling with a 60° conical sealing surface has been selected in aerospace fluid systems. Practical applications include:
- Design and specification of threaded adaptors with lockrings for aircraft fluid lines
- Ensuring dimensional interchangeability across suppliers and maintenance parts
- Selecting correct mating ports and O‑ring assemblies for systems rated to 28 000 kPa
Keywords: EN 2606:2009, 60° interface, aerospace adaptors, threaded adaptors, lockring, elastomer O‑ring, metric coupling, 28 000 kPa, 60-degree conical sealing surface, MJ threads, fluid systems.
Who uses this standard
- Aerospace component designers and engineers specifying adaptors and fittings
- Manufacturing and tooling engineers producing adaptors to specified dimensions
- Quality and inspection teams verifying conformity to geometric configuration
- Procurement professionals ensuring supplier compliance and part interchangeability
- Certification and maintenance personnel managing aircraft fluid-system components
Related standards
- ISO 5855‑1 - MJ threads - General requirements
- ISO 5855‑3 - MJ threads - Limit dimensions for fittings for fluid systems
- EN 2602 - Ports for adaptors, threaded, with lockring - Geometric configuration
- EN 2603 - Port ends for adaptors, threaded, with lockring - Geometric configuration
- EN 2607 - O‑rings for adaptors, threaded, with lockring - Survey
For implementation, refer to the full EN 2606:2009 text for exact figures, tolerances and installation notes.
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
EN 2606:2009 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - 60° interface for adaptors, threaded, with lockring - Geometric configuration". This standard covers: This standard specifies the dimensional characteristics of the 60° interface for adaptors, threaded, with lockring, assembly with elastomer O ring, for aerospace applications. This standard applies to all adaptors, threaded, with lockring, assembled to EN 2607 and used in fluid systems with a nominal pressure of 28 000 kPa for which a metric size coupling with a 60° conical sealing surface has been selected.
This standard specifies the dimensional characteristics of the 60° interface for adaptors, threaded, with lockring, assembly with elastomer O ring, for aerospace applications. This standard applies to all adaptors, threaded, with lockring, assembled to EN 2607 and used in fluid systems with a nominal pressure of 28 000 kPa for which a metric size coupling with a 60° conical sealing surface has been selected.
EN 2606:2009 is classified under the following ICS (International Classification for Standards) categories: 49.030.20 - Bolts, screws, studs. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 2606:2009 has the following relationships with other standards: It is inter standard links to prEN 415-2, EN 13848-1:2003+A1:2008, EN 2607:2005, EN 2602:2005, EN 4510:2018, EN 2603:2005. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 2606:2009 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)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Luft- und Raumfahrt - 60°-Anschlusszapfen für gerade Einschraubverschraubungen mit Sicherungsring - KonstruktionsblattSérie aérospatiale - Raccords avec cône d'étanchéité 60° pour raccords droits, filetés, avec bague de sécurité - Configuration géométriqueAerospace series - 60° interface for adaptors, threaded, with lockring - Geometric configuration49.030.20Sorniki, vijaki, stebelni vijakiBolts, screws, studsICS:Ta slovenski standard je istoveten z:EN 2606:2009SIST EN 2606:2009en01-oktober-2009SIST EN 2606:2009SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 2606
July 2009 ICS 49.030.20 English Version
Aerospace series - 60° interface for adaptors, threaded, with lockring - Geometric configuration
Série aérospatiale - Raccords avec cône d'étanchéité 60° pour raccords droits, filetés, avec bague de sécurité - Configuration géométrique
Luft- und Raumfahrt - 60°-Anschlusszapfen für gerade Einschraubverschraubungen mit Sicherungsring - Konstruktionsblatt This European Standard was approved by CEN on 13 June 2009.
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 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 Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 2606:2009: ESIST EN 2606:2009
...




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...