EN 2810:2001
(Main)Aerospace series - Nuts, hexagon, slotted / castellated, reduced height, normal across flats, in heat resisting steel, passivated - Classification: 900 MPa (at ambient temperature) / 650 °C
Aerospace series - Nuts, hexagon, slotted / castellated, reduced height, normal across flats, in heat resisting steel, passivated - Classification: 900 MPa (at ambient temperature) / 650 °C
This standard specifies the characteristics of hexagonal slotted / castellated nuts, reduced height, normal across flats, in heat resisting steel, passivated.
Classification: 900 MPa ) / 650 °C )
Luft- und Raumfahrt - Flache Kronenmuttern mit normaler Schlüsselweite, aus hochwarmfestem Stahl, passiviert - Klasse: 900 MPa (bei Raumtemperatur) / 650 °C
Diese Norm legt die Eigenschaften von flachen Kronenmuttern mit normaler Schlüsselweite, aus hochwarmfestem Stahl, passiviert, fest.
Klasse: 900 MPa ) / 650 °C )
Série aérospatiale - Écrous hexagonaux à créneaux, hauteur réduite, surplats normaux, en acier résistant à chaud, passivés - Classification : 900 MPa (à température ambiante) / 650 °C
La présente norme spécifie les caractéristiques des écrous hexagonaux à créneaux, hauteur réduite, surplats normaux, en acier résistant à chaud, passivés.
Classification : 900 MPa ) / 650 °C )
Aerospace series - Nuts, hexagon, slotted / castellated, reduced height, normal across flats, in heat resisting steel, passivated - Classification: 900 Mpa (at ambient temperature) / 650 oC
General Information
- Status
- Published
- Publication Date
- 19-Jun-2001
- Withdrawal Date
- 30-Dec-2001
- Technical Committee
- ASD-STAN - Aerospace
- Drafting Committee
- ASD-STAN/D 3 - Mechanical
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 31-May-2017
- Completion Date
- 04-Feb-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
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
Overview - EN 2810:2001 (Aerospace series nuts)
EN 2810:2001 is a CEN/AECMA aerospace standard that specifies the characteristics of hexagon slotted (castellated) nuts, reduced height, normal across flats, manufactured in heat-resisting steel and passivated. The standard defines the product classification: 900 MPa (at ambient temperature) / 650 °C, covering dimensional, material and surface-treatment requirements for use in high-stress and high-temperature aerospace applications.
Key topics and technical requirements
- Scope & classification
- Applies to hexagonal slotted/castellated nuts with reduced height, normal across flats.
- Classification: 900 MPa minimum tensile stress at ambient temperature; maximum service temperature 650 °C (see standard for conditioning by dimensions).
- Dimensions & configuration
- Dimensional requirements reference ISO 9618 (nut dimensions) and include diameter codes, slot geometry and mass data (tabled in the standard).
- Diameter-code designation (example: EN2810-080) and style codes (040–070 = N, 080–240 = C).
- Tolerances & form
- Tolerances of form and position are specified in ISO 8788.
- Threads
- Intended for aerospace MJ threads; limit dimensions per ISO 5855-2.
- Materials
- Material guidance and selection referenced to TR 3823 (heat-resisting steels for nuts).
- Surface treatment
- Passivation and decontamination requirements per EN 2516, with process class appropriate to the material.
- Marking & identification
- Marking requirements follow EN 2424; identification and designation format specified.
- Quality & procurement
- Manufacturer approval and QA requirements per EN 2000; procurement/specification guidance per ISO 9139.
- Related parts
- Split pins and retention hardware referenced to EN 2367.
Practical applications - who uses EN 2810
- Aerospace fastener manufacturers - to design and produce compliant castellated nuts for high-temperature components.
- Aerospace design and structural engineers - to specify correct nut classifications (900 MPa / 650 °C) for engine, exhaust, hot-structure and turbine applications.
- Procurement and quality assurance teams - for vendor approval, acceptance criteria and traceability consistent with EN 2000 and EN 2424.
- Maintenance, repair and overhaul (MRO) organizations - to verify replacement fasteners meet required heat-resisting and passivation standards.
- Certification bodies - to assess conformity of nuts used in safety-critical or high-temperature aerospace assemblies.
Related standards (for specification & implementation)
- ISO 9618 - Dimensions for hexagonal slotted nuts
- ISO 8788 - Tolerances of form and position
- ISO 5855-2 - MJ thread limit dimensions
- ISO 9139 - Procurement specification for plain/slotted nuts
- EN 2516 - Passivation of corrosion-resisting steels
- EN 2424 - Marking of aerospace products
- EN 2000 - Quality system approval for aerospace manufacturers
- TR 3823 - Materials for plain and slotted hexagonal nuts
EN 2810:2001 is essential when specifying or manufacturing passivated, heat-resisting castellated nuts for aerospace applications that demand defined tensile classification and high-temperature performance.
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Frequently Asked Questions
EN 2810:2001 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Nuts, hexagon, slotted / castellated, reduced height, normal across flats, in heat resisting steel, passivated - Classification: 900 MPa (at ambient temperature) / 650 °C". This standard covers: This standard specifies the characteristics of hexagonal slotted / castellated nuts, reduced height, normal across flats, in heat resisting steel, passivated. Classification: 900 MPa ) / 650 °C )
This standard specifies the characteristics of hexagonal slotted / castellated nuts, reduced height, normal across flats, in heat resisting steel, passivated. Classification: 900 MPa ) / 650 °C )
EN 2810:2001 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 2810:2001 has the following relationships with other standards: It is inter standard links to EN 2516:2023, EN 2367:1989, EN 9133:2018, EN 9100:2018, EN 840-6:2004+A1:2008, EN 3727:2006, EN 2424:2008, EN 2944:1998, EN 4840-101:2018. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 2810:2001 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.Aerospace series - Nuts, hexagon, slotted / castellated, reduced height, normal across flats, in heat resisting steel, passivated - Classification: 900 Mpa (at ambient temperature) / 650 oCLuft- und Raumfahrt - Flache Kronenmuttern mit normaler Schlüsselweite,aus hochwarmfestem Stahl, passiviert - Klasse: 900 MPa (bei Raumtemperatur) / 650 °CSérie aérospatiale - Écrous hexagonaux a créneaux, hauteur réduite, surplats normaux, enacier résistant a chaud, passivés - Classification : 900 MPa (a température ambiante) / 650 °CAerospace series - Nuts, hexagon, slotted / castellated, reduced height, normal across flats, in heat resisting steel, passivated - Classification: 900 MPa (at ambient temperature) / 650 °C49.030.30MaticeNutsICS:Ta slovenski standard je istoveten z:EN 2810:2001SIST EN 2810:2002en01-januar-2002SIST EN 2810:2002SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 2810June 2001ICS 49.030.30English versionAerospace series - Nuts, hexagon, slotted/castellated, reducedheight, normal across flats, in heat resisting steel, passivated -Classification: 900 MPa (at ambient temperature)/650°CSérie aérospatiale - Ecrous hexagonaux à créneaux,hauteur réduite, surplats normaux, en acier résistant àchaud, passivés - Classification: 900 MPa (à températureambiante)/650°CLuft- und Raumfahrt - Flache Kronenmuttern mit normalerSchlüsselweite, aus hochwarmfestem Stahl, passiviert -Klasse: 900 MPa (bei Raumtemperatur)/650°CThis European Standard was approved by CEN on 28 February 2001.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 2810:2001 ESIST EN 2810:2002
Page 2EN 2810:2001ForewordThis European Standard has been prepared by the European Association of Aerospace Manufacturers(AECMA).After inquiries and votes carried out in accordance with the rules of this Association, this Standard hasreceived the approval of the National Associations and the Official Services of the member countries ofAECMA, prior to its presentation to CEN.This European Standard shall be given the status of a national standard, either by publication of an identicaltext or by endorsement, at the latest by December 2001, and conflicting national standards shall bewithdrawn at the latest by December 2001.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark,Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal,Spain, Sweden, Switzerland and the United Kingdom.SIST EN 2810:2002
Page 3EN 2810:20011ScopeThis standard specifies the characteristics of hexagonal slotted / castellated nuts, reduced height, normalacross flats, in heat resisting steel, passivated.Classification: 900 MPa 1) / 650 °C 2)2Normative referencesThis European Standard incorporates by dated or undated reference provisions from other publications.These normative references are cited at the appropriate places in the text and the publications are listedhereafter. For dated
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