EN 2879:2017
(Main)Aerospace series - Nuts, anchor, self-locking, air resistant, sealing, floating, two lug, with counterbore, in corrosion resisting steel, passivated, MoS2 lubricated - Classification: 900 MPa (at ambient temperature) / 235 °C
Aerospace series - Nuts, anchor, self-locking, air resistant, sealing, floating, two lug, with counterbore, in corrosion resisting steel, passivated, MoS2 lubricated - Classification: 900 MPa (at ambient temperature) / 235 °C
This European Standard specifies the characteristics of self-locking, air resistant, sealing, floating, two lug anchor nuts, with counterbore, in corrosion resisting steel, passivated, MoS2 lubricated.
Classification: 900 MPa / 235 °C).
Luft- und Raumfahrt - Annietmuttern, selbstsichernd, luftbeständig, druckdicht, beweglich, beiderseitiger Flansch, mit zylindrischer Aussenkung, aus korrosionsbeständigem Stahl, passiviert, MoS2-geschmiert - Klasse: 900 MPa (bei Raumtemperatur)/235 °C
Diese Europäische Norm legt die Eigenschaften von Annietmuttern, selbstsichernd, druckdicht, luftbeständig, beweglich, beiderseitiger Flansch, mit zylindrischer Aussenkung, aus korrosionsbeständigem Stahl, passiviert, MoS2 geschmiert, fest.
Série aérospatiale - Écrous à river, à freinage interne, étanches à l'air, flottants, double patte, avec chambrage, en acier résistant à la corrosion, passivés, lubrifiés MoS2 - Classification : 900 MPa (à température ambiante) / 235 °C
Aeronavtika - Zakovne matice, samovarovalne, vremensko odporne, tesnilne, premične, z obojestransko prirobnico, z valjasto poglobitvijo, iz korozijsko odpornega jekla, pasivirane, mazane z MoS2 - Klasifikacija: 900 MPa (pri temperaturi okolice)/235 °C
Ta evropski standard določa lastnosti samovarovalnih, vremensko odpornih, tesnilnih, premičnih matic, z
obojestransko prirobnico, z valjasto poglobitvijo, iz korozijsko odpornega jekla, pasiviranih, mazanih z MoS2.
Klasifikacija: 900 MPa 1)/235 °C 2).
General Information
- Status
- Published
- Publication Date
- 17-Jan-2017
- Withdrawal Date
- 30-Jul-2017
- Technical Committee
- ASD-STAN - Aerospace
- Drafting Committee
- ASD-STAN/D 3 - Mechanical
- Current Stage
- 6060 - Definitive text made available (DAV) - Publishing
- Start Date
- 18-Jan-2017
- Completion Date
- 18-Jan-2017
Overview
EN 2879:2017 is a CEN European Standard for aerospace anchor nuts: self‑locking, air‑resistant, sealing, floating, two‑lug nuts with a counterbore, manufactured in corrosion‑resisting steel, passivated and MoS2 (molybdenum disulphide) lubricated. The parts are classified 900 MPa (ambient tensile class) and 235 °C (maximum service temperature determined by the seal material). The standard defines required characteristics, configuration, materials, surface treatments, designation and marking to ensure reliable, interchangeable fasteners for aerospace applications.
Key Topics
- Product scope and configuration
- Two‑lug anchor nuts with counterbore; floating nut element to allow radial float (min. 0.5 mm) and anti‑rotation features as specified.
- Dimensions and tolerances referenced to ISO 8940 and ISO 5855‑2 (MJ thread forms).
- Mechanical classification
- 900 MPa: minimum tensile stress the nut withstands at ambient temperature (tested with higher‑strength bolts).
- 235 °C: maximum temperature the nut can withstand without permanent alteration (seal material limited).
- Materials and seals
- Nut element, cage and seal retainer follow TR 3791 material guidance; sealing ring: air‑resistant rubber per SAE AMS 3304 (or equivalent).
- Surface treatment and lubrication
- Passivation per EN 2516 for cage and seal retainer; MoS2 dry lubrication per EN 2491 on threads (mandatory on threads).
- Quality and marking
- Marking requirements per EN 2424; manufacturer approval and product qualification referenced to EN 9100 and EN 9133.
- Tolerance and finish
- Form and position tolerances per ISO 8788; surface texture limits and edge break requirements specified.
Applications
- Designed for aerospace structural and systems fastening where:
- Air‑tight / pressure‑resistant joints are required (aircraft fuel, cabin or pressurized panels).
- High‑reliability, vibration‑prone assemblies need self‑locking features.
- Corrosion resistance and elevated temperature resistance are required up to seal‑limited 235 °C.
- Typical users:
- Aerospace OEMs and tier‑1 suppliers specifying standard aerospace fasteners.
- Fastener manufacturers and coating/finish processors producing certified components.
- Design, procurement and quality engineers responsible for parts selection, qualification and inspection.
- Maintenance, Repair and Overhaul (MRO) organizations ensuring correct replacement parts.
Related Standards
- EN 2424 (marking of aerospace products)
- EN 2491 (MoS2 dry lubricants)
- EN 2516 (passivation of corrosion-resisting steels)
- ISO 5855‑2 (MJ threads dimensions)
- ISO 5858 / ISO 8788 / ISO 8940 (aerospace nut specifications and tolerances)
- EN 9100 / EN 9133 (quality systems and product qualification)
- TR 3791, SAE AMS 3304 (seal and material guidance)
EN 2879:2017 helps ensure interchangeability, corrosion‑resistance and reliable locking/sealing performance for critical aerospace anchor nut applications.
Frequently Asked Questions
EN 2879:2017 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Nuts, anchor, self-locking, air resistant, sealing, floating, two lug, with counterbore, in corrosion resisting steel, passivated, MoS2 lubricated - Classification: 900 MPa (at ambient temperature) / 235 °C". This standard covers: This European Standard specifies the characteristics of self-locking, air resistant, sealing, floating, two lug anchor nuts, with counterbore, in corrosion resisting steel, passivated, MoS2 lubricated. Classification: 900 MPa / 235 °C).
This European Standard specifies the characteristics of self-locking, air resistant, sealing, floating, two lug anchor nuts, with counterbore, in corrosion resisting steel, passivated, MoS2 lubricated. Classification: 900 MPa / 235 °C).
EN 2879:2017 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.
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.HVQLOQHLuft- und Raumfahrt - Annietmuttern, selbstsichernd, luftbeständig, druckdicht, beweglich, beiderseitiger Flansch, mit zylindrischer Aussenkung, aus korrosionsbeständigem Stahl, passiviert, MoS2-geschmiert - Klasse: 900 MPa (bei Raumtemperatur) / 235°CSérie aérospatiale - Écrous à river, à freinage interne, étanches à l'air, flottants, double patte, avec chambrage, en acier résistant à la corrosion, passivés, lubrifiés MoS2 - Classification: 900 MPa (à température ambiante) / 235°CAerospace series - Nuts, anchor, self-locking, air resistant, sealing, floating, two lug, with counterbore, in corrosion resisting steel, passivated, MoS2 lubricated - Classification: 900 MPa (at ambient temperature) / 235°C49.030.30MaticeNutsICS:Ta slovenski standard je istoveten z:EN 2879:2017SIST EN 2879:2017en,fr,de01-marec-2017SIST EN 2879:2017SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 2879
January
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Aerospace series æ Nutsá anchorá selfælockingá air resistantá sealingá floatingá two lugá with counterboreá in corrosion resisting steelá passivatedá MoS t lubricated æ Classificationã Série aérospatiale æ Écrous à riverá à freinage interneá étanches à l 5airá flottantsá double patteá avec chambrageá en acier résistant à la corrosioná passivésá
Luftæ und Raumfahrt æ Annietmutterná selbstsicherndá luftbeständigá druckdichtá beweglichá beiderseitiger Flanschá mit zylindrischer Aussenkungá aus korrosionsbeständigem Stahlá passiviertá MoS tæThis European Standard was approved by CEN on
v March
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egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels
t r s y CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
t z y {ã t r s y ESIST EN 2879:2017
Page European foreword . 3 1 Scope . 4 2 Normative references . 4 3 Required characteristics . 5 3.1 Configuration – Dimensions – Masses . 5 3.2 Tolerances of form and position . 5 3.3 Materials . 5 3.4 Surface treatments . 5 4 Designation . 7 5 Marking . 7 6 Technical specification . 7
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