Aerospace series - Nuts, hexagon, self-locking by plastic ring, normal height, normal across flats, in corrosion resisting steel, passivated - Classification: 900 MPa (at ambient temperature) / 120 °C

This European Standard specifies the characteristics of hexagonal nuts, self-locking by plastic ring, normal height, normal across flats, in corrosion resisting steel, passivated.
Classification: 900 MPa  ) / 120 °C  ).

Luft- und Raumfahrt - Sechskantmuttern, selbstsichernd mit Plastikring, mit normaler Schlüsselweite, aus korrosionsbeständigem Stahl, passiviert - Klasse: 900 MPa (bei Raumtemperatur) / 120 °C

Série aérospatiale - Écrous hexagonaux, à freinage interne par bague plastique, hauteur normale, surplats normaux, en acier résistant à la corrosion, passivés - Classification: 900 MPa (à température ambiante) / 120 °C

La présente norme Européenne spécifie les caractéristiques des écrous hexagonaux, à freinage interne par bague plastique, hauteur normale, surplats normaux, en acier résistant à la corrosion, passivés.
Classification: 900 MPa  ) / 120 °C  ).

Aeronavtika - Matice, šestrobe, samovarovalne s plastičnim obročem, normalno visoke, normalno prečno ploske, iz korozijsko odpornega jekla, pasivirane - Klasifikacija: 900 MPa (pri temperaturi okolice)/120 °C

Ta evropski standard določa lastnosti šestrobih matic, samovarovalnih s plastičnim obročem, normalne višine, normalno prečno ploskih, iz korozijsko odpornega jekla, pasiviranih.
Klasifikacija: 900 MPa/120 °C.

General Information

Status
Published
Publication Date
17-Jan-2017
Withdrawal Date
30-Jul-2017
ICS
49.030.30 - Nuts
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
Ref Project
SIST EN 4297:2017 - Aerospace series - Nuts, hexagon, self-locking by plastic ring, normal height, normal across flats, in corrosion resisting steel, passivated - Classification: 900 MPa (at ambient temperature) / 120 °C

Overview

EN 4297:2017 is a European aerospace standard specifying the characteristics of hexagon nuts that are self‑locking by a plastic ring, with normal height and normal across‑flats, made from corrosion‑resisting steel (passivated). The nuts are classified for a minimum tensile stress of 900 MPa at ambient temperature and a maximum service temperature of 120 °C (the latter being limited by the plastic ring material). This standard is published by CEN/ASD‑STAN for use in aviation, space and defence applications.

Key topics

  • Scope and classification
    • Defines nut configuration, classification 900 MPa / 120 °C, and applicability to aerospace fastenings.
  • Dimensions and tolerances
    • Dimensions and tolerances expressed in millimetres and apply after surface treatment; detailed sizes and masses provided in the standard (Table 1).
    • Thread form references: ISO 5855‑2 (MJ threads) and tolerances of form and position per ISO 8788.
  • Materials
    • Threaded element: material designation FE‑PA1801.
    • Locking element: polyamide 6.6 plastic ring.
  • Surface treatment and passivation
    • Surface finish and passivation requirements referenced to EN 2516 (process class appropriate to material).
  • Marking and designation
    • Marking follows EN 2424 (style N). Example designation format: NUT EN4297‑050.
  • Quality and procurement
    • Manufacturer approval and quality system references: EN 9100 and product qualification EN 9133.
  • Technical specification
    • Procurement and testing reference ISO 5858, with noted exceptions for manufacturer approval and qualification.

Applications

  • Designed for aerospace and defence bolted joints where a reusable, vibration‑resistant locking feature is required.
  • Typical uses include airframe assemblies, avionics enclosures, engine accessory attachments and other critical joints where corrosion resistance and controlled mechanical properties (900 MPa class) are needed.
  • Relevant to design engineers, procurement specialists, fastener manufacturers, quality managers and maintenance organizations specifying or producing standardized aerospace nuts.

Who should use this standard

  • Aerospace fastener manufacturers and suppliers
  • Design and stress engineers specifying fastening hardware
  • Procurement teams creating procurement specifications for aerospace parts
  • Quality assurance and certification bodies auditing compliance with aerospace standards

Related standards

  • EN 2424 - Marking of aerospace products
  • EN 2516 - Passivation of corrosion resisting steels
  • ISO 5855‑2 / ISO 5858 / ISO 8788 - Thread and nut dimensional/tolerance standards
  • EN 9100 / EN 9133 - Aerospace quality and qualification procedures

Keywords: EN 4297, aerospace nuts, self-locking nuts, plastic ring, passivated stainless steel, 900 MPa, 120 °C, MJ threads, aerospace fasteners.

Frequently Asked Questions

EN 4297:2017 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Nuts, hexagon, self-locking by plastic ring, normal height, normal across flats, in corrosion resisting steel, passivated - Classification: 900 MPa (at ambient temperature) / 120 °C". This standard covers: This European Standard specifies the characteristics of hexagonal nuts, self-locking by plastic ring, normal height, normal across flats, in corrosion resisting steel, passivated. Classification: 900 MPa ) / 120 °C ).

This European Standard specifies the characteristics of hexagonal nuts, self-locking by plastic ring, normal height, normal across flats, in corrosion resisting steel, passivated. Classification: 900 MPa ) / 120 °C ).

EN 4297:2017 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.

You can purchase EN 4297:2017 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.

Standards Content (Sample)


SLOVENSKI STANDARD
01-marec-2017
$HURQDYWLND0DWLFHãHVWUREHVDPRYDURYDOQHVSODVWLþQLPREURþHPQRUPDOQR
YLVRNHQRUPDOQRSUHþQRSORVNHL]NRUR]LMVNRRGSRUQHJDMHNODSDVLYLUDQH
.ODVLILNDFLMD03D SULWHPSHUDWXULRNROLFH ƒ&
Aerospace series - Nuts, hexagon, self-locking by plastic ring, normal height, normal
across flats, in corrosion resisting steel, passivated - Classification: 900 MPa (at ambient
temperature) / 120 °C
Luft- und Raumfahrt - Sechskantmuttern, selbstsichernd mit Plastikring, mit normaler
Schlüsselweite, aus korrosionsbeständigem Stahl, passiviert; Klasse: 900 MPa (bei
Raumtemperatur)/120 °C
Série aérospatiale - Écrous hexagonaux, à freinage interne par bague plastique, hauteur
normale, surplats normaux, en acier résistant à la corrosion, passivés - Classification :
900 MPa (à température ambiante) / 120 °C
Ta slovenski standard je istoveten z: EN 4297:2017
ICS:
49.030.30 Matice Nuts
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 4297
EUROPEAN STANDARD
NORME EUROPÉENNE
January 2017
EUROPÄISCHE NORM
ICS 49.030.30
English Version
Aerospace series - Nuts, hexagon, self-locking by plastic
ring, normal height, normal across flats, in corrosion
resisting steel, passivated - Classification: 900 MPa (at
ambient temperature) / 120 °C
Série aérospatiale - Écrous hexagonaux, à freinage Luft- und Raumfahrt - Sechskantmuttern,
interne par bague plastique, hauteur normale, surplats selbstsichernd mit Plastikring, mit normaler
normaux, en acier résistant à la corrosion, passivés - Schlüsselweite, aus korrosionsbeständigem Stahl,
Classification: 900 MPa (à température ambiante) / passiviert - Klasse: 900 MPa (bei Raumtemperatur) /
120 °C 120 °C
This European Standard was approved by CEN on 11 March 2016.

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-CENELEC 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-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4297:2017 E
worldwide for CEN national Members.

Contents
Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Required characteristics . 4
4 Designation. 6
5 Marking . 7
6 Technical specification . 7

European foreword
This document (EN 4297:2017) has been prepared by the Aerospace and Defence Industries
Association of Europe - Standardization (ASD-STAN).
After enquiries and votes carried out in accordance with the rules of this Association, this European
Standard has received the approval of the National Associations and the Official Services of the member
countries of ASD, prior to its presentation to CEN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by July 2017, and conflicting national standards shall be
withdraw
...

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