EN 2865:2009
(Main)Aerospace series - Nuts, anchor, self-locking, floating, two lugs, with counterbore, in heat resisting steel, MoS2 lubricated - Classification: 1 100 MPa (at ambient temperature) / 315 °C
Aerospace series - Nuts, anchor, self-locking, floating, two lugs, with counterbore, in heat resisting steel, MoS2 lubricated - Classification: 1 100 MPa (at ambient temperature) / 315 °C
This European Standard specifies the characteristics of two lugs, counterbored floating anchor nuts, with a self-locking feature achieved by forming the upper portion out-of-round, in heat resisting steel, MoS2 lubricated.
Classification: 1 100 MPa / 315 °C.
Luft- und Raumfahrt - Annietmuttern, selbstsichernd, beweglich, beiderseitiger Flansch, mit zylindrischer Aussenkung, aus hochwarmfestem Stahl, MoS2-geschmiert - Klasse: 1 100 MPa (bei Raumtemperatur)/315 °C
Diese Norm legt die Eigenschaften von beweglichen Annietmuttern mit beiderseitigem Flansch, zylindrischer Aussenkung und einer durch Verformung des oberen Teils erzielten Selbstsicherung, aus hochwarmfestem Stahl, MoS2-geschmiert, fest.
Klassifizierung: 1 100 MPa )/315 °C
Série aérospatiale - Écrous à river, à freinage interne, flottants, double patte, avec chambrage, en acier résistant à chaud, lubrifiés MoS2 - Classification : 1 100 MPa (à température ambiante) / 315 °C
Aeronavtika - Zakovne matice, samozapiralne, premične, dvostranske, z izvrtino za vijake, iz toplotnoodpornega jekla, mazane z MoS2 - Klasifikacija: 1100 MPa (pri temperaturi okolice)/315 °C
Ta evropski standard določa značilnosti dvostranskih premičnih zakovnih matic z izvrtino za vijake in s samozapiralno funkcijo, ki je dosežena tako, da je zgornji del oblikovan rahlo ovalno, iz toplotnoodpornega jekla in mazanih z MoS2. Klasifikacija: 1 100 MPa / 315 °C.
General Information
- Status
- Published
- Publication Date
- 10-Nov-2009
- Withdrawal Date
- 30-May-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
- 21-Jan-2026
Relations
- 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 2865:2009 is a European Standard developed by the Aerospace and Defence Industries Association of Europe (ASD-STAN) and adopted by the European Committee for Standardization (CEN). It specifies the technical requirements for aerospace-grade self-locking floating anchor nuts. These nuts feature two lugs with counterbores, crafted from heat-resistant steel, and are lubricated with molybdenum disulphide (MoS2). The standard classifies these nuts with a strength rating of 1100 MPa at ambient temperature and resistance up to 315 °C. EN 2865:2009 is essential for manufacturers, suppliers, and quality managers involved in aerospace fasteners, offering a harmonized framework to ensure performance, durability, and safety in high-temperature conditions.
Key Topics
Product Description
The standard defines floating anchor nuts with two lugs and counterbored holes. The nuts have a self-locking function based on an out-of-round upper portion that maintains secure fastening under vibration and thermal stress.Materials
Nuts are manufactured from heat-resisting steel grades specified in related aerospace standards (e.g., EN 2398, EN 2399). MoS2 lubrication is applied to enhance wear resistance and reduce friction during installation and service.Mechanical Properties
These nuts provide a tensile strength classification of 1100 MPa at ambient temperature and maintain structural integrity up to 315 °C. This classification assures compatibility with aerospace bolts of similar strength.Design and Dimensions
The standard defines normative dimensions and tolerances in accordance with ISO 3209 and ISO 8788. It includes detailed specifications for sizes, float clearance, counterbore configuration, and thread form suitable for aerospace assembly.Marking and Traceability
Per EN 2424:2008, nuts must be clearly marked for traceability. This includes manufacturer identification, standard reference, and size codes to ensure authenticity and quality control throughout the supply chain.Quality and Compliance
Compliance with aerospace quality management systems such as EN 9100 and product qualification via EN 9133 is mandated, ensuring reproducibility and reliability in critical aerospace applications.
Applications
EN 2865:2009 nuts find extensive use in aerospace assemblies where high-performance fastening solutions are required. They are ideal for:
- Aircraft structural components subjected to high mechanical loads and elevated temperatures
- Engine and exhaust systems requiring heat-resistant fasteners with self-locking capabilities
- Aerospace and defense industry products demanding strict compliance with material, design, and quality standards
- Situations where vibration resistance and temperature endurance are critical for safety and operational reliability
Their floating anchor design allows for minor misalignment correction, improving joint integrity in complex aerospace assemblies.
Related Standards
- EN 2398 / EN 2399: Specifications for heat resisting steel materials used in manufacturing aerospace fasteners
- EN 2491: Molybdenum disulphide dry lubricants and coating methods for aerospace hardware
- EN 2424: Marking requirements for aerospace products ensuring traceability and conformity
- ISO 3209: Aerospace nuts-anchor, self-locking, floating design specifications, complementing EN 2865 by addressing thread dimensions and tolerances
- EN 9100: Quality Management Systems-specific requirements for the aerospace, space, and defense sectors
- EN 9133: Qualification procedures for aerospace standard parts to ensure product reliability
- ISO 8788: Tolerances of form and position for aerospace nuts to meet strict precision criteria
- ISO 5855-2: Limit dimensions for aerospace bolts and nuts ensuring interchangeability and fit
Summary
EN 2865:2009 provides a robust European benchmark for two-lug, self-locking floating anchor nuts in heat-resisting steel with MoS2 lubrication for aerospace use. Its detailed guidance on materials, dimensions, mechanical performance, surface treatment, and quality management ensures these nuts meet stringent aerospace industry demands. Adherence to this standard bolsters product safety, reliability, and compatibility in critical high-temperature aerospace applications.
Get Certified
Connect with accredited certification bodies for this standard
National Aerospace and Defense Contractors Accreditation Program (NADCAP)
Global cooperative program for special process quality in aerospace.
NSF-ISR
NSF International Strategic Registrations.
Orion Registrar Inc.
US-based certification body for management systems.
Sponsored listings
Frequently Asked Questions
EN 2865:2009 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Nuts, anchor, self-locking, floating, two lugs, with counterbore, in heat resisting steel, MoS2 lubricated - Classification: 1 100 MPa (at ambient temperature) / 315 °C". This standard covers: This European Standard specifies the characteristics of two lugs, counterbored floating anchor nuts, with a self-locking feature achieved by forming the upper portion out-of-round, in heat resisting steel, MoS2 lubricated. Classification: 1 100 MPa / 315 °C.
This European Standard specifies the characteristics of two lugs, counterbored floating anchor nuts, with a self-locking feature achieved by forming the upper portion out-of-round, in heat resisting steel, MoS2 lubricated. Classification: 1 100 MPa / 315 °C.
EN 2865:2009 is classified under the following ICS (International Classification for Standards) categories: 49.030.30 - Nuts. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 2865:2009 has the following relationships with other standards: It is inter standard links to EN 13001-2:2004/AC:2006, EN 3638:2025, EN 9133:2018, EN 3816:2006, EN 2491:2011. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 2865:2009 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 - Annietmuttern, selbstsichernd, bewegli, beiderseitiger Flansch, mit zylindrischer Aussenkung, aus hochwarmfestem Stahl, MoS2-geschmiert - Klasse: 1100 MPa (bei Raumtemperatur)/315 °CSérie aérospatiale - Écrous à river, à freinage interne, flottants, double patte, avec chambrage, en acier résistant à chaud, lubrifiés MoS2 - Classification: 1100 MPa (à température ambiante)/315 °CAerospace series - Nuts, anchor, self-locking, floating, two lug, with counterbore, in heat resisting steel, MoS2 lubricated - Classification: 1100 MPa (at ambient temperature)/315 °C49.030.30MaticeNutsICS:Ta slovenski standard je istoveten z:EN 2865:2009SIST EN 2865:2010en01-januar-2010SIST EN 2865:2010SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 2865
November 2009 ICS 49.030.30 English Version
Aerospace series - Nuts, anchor, self-locking, floating, two lugs, with counterbore, in heat resisting steel, MoS2 lubricated - Classification: 1 100 MPa (at ambient temperature) / 315 °C
Série aérospatiale - Écrous à river, à freinage interne, flottants, double patte, avec chambrage, en acier résistant à chaud, lubrifiés MoS2 - Classification : 1 100 MPa (à température ambiante) / 315 °C
Luft- und Raumfahrt - Annietmuttern, selbstsichernd, bewegli, beiderseitiger Flansch, mit zylindrischer Aussenkung, aus hochwarmfestem Stahl, MoS2-geschmiert - Klasse : 1 100 MPa (bei Raumtemperatur) / 315 °C This European Standard was approved by CEN on 17 October 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 2865:2009: ESIST EN 2865:2010
...
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...