EN 2866:2009
(Main)Aerospace series - Nuts, anchor, self-locking, floating, one lug, with counterbore, in steel, cadmium plated, MoS2 lubricated - Classification: 1 110 MPa (at ambient temperature) / 235 °C
Aerospace series - Nuts, anchor, self-locking, floating, one lug, with counterbore, in steel, cadmium plated, MoS2 lubricated - Classification: 1 110 MPa (at ambient temperature) / 235 °C
This European Standard specifies the characteristics of one lug, floating anchor nuts, with counterbore and self-locking feature achieved by forming the upper portion out-of-round, in steel, cadmium plated, MoS2 lubricated.
Classification: 1 100 MPa / 315 °C.
Luft- und Raumfahrt - Gehäuse-Annietmuttern, selbstsichernd, beweglich, einseitiger Flansch, mit zylindrischer Aussenkung, aus Stahl, verkadmet, MoS2-geschmiert - Klasse: 1 110 MPa (bei Raumtemperatur)/235 °C
Diese Norm legt die Eigenschaften von beweglichen Gehäuse-Annietmuttern mit einseitigem Flansch, zylindrischer Aussenkung und einer durch Verformung des oberen Teils erzeugten Selbstsicherung, aus Stahl, verkadmet, MoS2-geschmiert, fest.
Klassifizierung: 1 100 MPa ) / 315 °C )
Série aérospatiale - Écrous à river, à freinage interne, flottants, simple patte, avec chambrage, en acier, cadmiés, lubrifiés MoS2 - Classification : 1 110 MPa (à température ambiante) / 235 °C
Aeronavtika - Zakovne matice, samozapiralne, premične, enostranske, z izvrtino za vijake, iz jekla, kadmirane, mazane z MoS2 - Klasifikacija: 1100 MPa (pri temperaturi okolice)/235 °C
Ta evropski standard določa značilnosti enostranskih premičnih zakovnih matic z izvrtino za vijake in s samozapiralno funkcijo, ki je dosežena tako, da je zgornji del oblikovan rahlo ovalno, iz kadmiranega 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
Overview
EN 2866:2009 is a CEN aerospace standard that defines the characteristics of one-lug, floating anchor nuts with a counterbore and an integral self‑locking feature. These aerospace nuts are manufactured in steel, cadmium plated and MoS2 (molybdenum disulphide) lubricated. The self‑locking action is achieved by forming the nut’s upper portion out‑of‑round. The standard covers geometry, materials, surface treatment and marking for use in aircraft and aerospace applications and references dimensional requirements in ISO 3224.
Key Topics
- Configuration and dimensions: Dimensions and tolerances conform to ISO 3224 (expressed after cadmium plating, before MoS2 lubrication). The standard includes size/diameter codes, counterbore/rivet hole options and permitted radial float.
- Self‑locking design: Locking is achieved by forming the nut’s upper portion out‑of‑round; tolerances in the self‑locking zone apply before forming.
- Materials: Steel grades specified via EN 2542, EN 2543 or TR 3791 (materials for self‑locking nuts and inserts).
- Surface treatment: Cadmium plating per EN 2133 with a minimum 5 µm on threads and all surfaces contacted by a 20 mm diameter ball; MoS2 dry lubricant applied per EN 2491.
- Performance classification: The document specifies strength/temperature classifications (examples cited in the standard include classifications such as ~1110 MPa at ambient with an associated maximum temperature). The standard clarifies that strength class corresponds to the associated bolt’s load capacity at ambient temperature and that maximum temperature limits are conditioned by surface treatment.
- Marking and quality: Marking rules follow EN 2424; manufacturer approval and product qualification reference EN 9100 and EN 9133 respectively. Tolerances of form and position follow ISO 8788.
Applications
- Procurement and specification of aerospace fasteners for airframe and engine assemblies
- Manufacturing and quality control of one‑lug floating anchor nuts, especially where cadmium plating and MoS2 lubrication are mandated
- Design and assembly engineers who require standardized self‑locking anchor nuts with counterbores and controlled float
- Maintenance, repair and overhaul (MRO) operations specifying replacement parts to a recognized European aerospace standard
Related Standards
- EN 2133 (cadmium plating), EN 2491 (MoS2 dry lubricants), EN 2424 (marking)
- EN 2542 / EN 2543 / TR 3791 (material specifications)
- ISO 3224 (dimensions for single‑lug floating anchor nuts), ISO 5855‑2, ISO 5858, ISO 8788
- EN 9100 / EN 9133 (quality system and qualification for aerospace standard parts)
Keywords: EN 2866:2009, aerospace nuts, anchor nuts, self‑locking, floating nut, one lug, counterbore, cadmium plated, MoS2 lubricated, ISO 3224.
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Frequently Asked Questions
EN 2866:2009 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Nuts, anchor, self-locking, floating, one lug, with counterbore, in steel, cadmium plated, MoS2 lubricated - Classification: 1 110 MPa (at ambient temperature) / 235 °C". This standard covers: This European Standard specifies the characteristics of one lug, floating anchor nuts, with counterbore and self-locking feature achieved by forming the upper portion out-of-round, in steel, cadmium plated, MoS2 lubricated. Classification: 1 100 MPa / 315 °C.
This European Standard specifies the characteristics of one lug, floating anchor nuts, with counterbore and self-locking feature achieved by forming the upper portion out-of-round, in steel, cadmium plated, MoS2 lubricated. Classification: 1 100 MPa / 315 °C.
EN 2866:2009 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 2866:2009 has the following relationships with other standards: It is inter standard links to EN ISO 16433:2007, EN 9133:2018, EN 2491:2011. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 2866:2009 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 - Gehause-Annietmuttern, selbstsichernd, beweglich, einseitiger Flansch, mit zylindrischer Aussenkung, aus Stahl, verkadmet, MoS2 geschmiert - Klasse: 1110 MPa (bei Raumtemperatur)/235 °CSérie aérospatiale - Écrous à river, à freinage interne, flottants, simple patte, avec chambrage, en acier cadmiés, lubrifiés MoS2 - Classification: 1110 MPa (à température ambiante)/235 °CAerospace series - Nuts, anchor, self-locking, floating, one lug, with counterbore, in steel, cadmium plated, MoS2 lubricated - Classification: 1110 MPa (at ambient temperature)/235 °C49.030.30MaticeNutsICS:Ta slovenski standard je istoveten z:EN 2866:2009SIST EN 2866:2010en,de01-januar-2010SIST EN 2866:2010SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 2866
November 2009 ICS 49.030.30 English Version
Aerospace series - Nuts, anchor, self-locking, floating, one lug, with counterbore, in steel, cadmium plated, MoS2 lubricated - Classification: 1 110 MPa (at ambient temperature) / 235 °C
Série aérospatiale - Écrous à river, à freinage interne, flottants, simple patte, avec chambrage, en acier, cadmiés, lubrifiés MoS2 - Classification : 1 110 MPa (à température ambiante) / 235 °C
Luft- und Raumfahrt - Gehäuse-Annietmuttern, selbstsichernd, beweglich, einseitiger Flansch, mit zylindrischer Aussenkung, aus Stahl, verkadmet, MoS2-geschmiert -Klasse: 1 110 MPa (bei Raumtemperatur)/235 °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 2866:2009: ESIST EN 2866:2010
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