EN 4117:2004
(Main)Aerospace series - Nuts, bihexagonal, self-locking, in heat resisting nickel base alloy NI-PH2601 (Inconel 718), silver plated on thread - Classification: 1 550 MPa (at ambient temperature) / 600 °C
Aerospace series - Nuts, bihexagonal, self-locking, in heat resisting nickel base alloy NI-PH2601 (Inconel 718), silver plated on thread - Classification: 1 550 MPa (at ambient temperature) / 600 °C
This standard specifies the characteristics of self-locking bihexagonal nuts in NI-P100HT, silver plated on thread, for aerospace applications.
Classification: 1 550 MPa/600 °C
Luft- und Raumfahrt - Zwölfkantmuttern, selbstsichernd, aus hochwarmfester Nickelbasislegierung NI-PH2601 (Inconel 718), Gewinde versilbert - Klasse: 1 550 MPa (bei Raumtemperatur) / 600 °C
Diese Norm legt die Eigenschaften von selbstsichernden Zwölfkantmuttern aus NI-PH2601, Gewinde versilbert, für Anwendungen in der Luft- und Raumfahrt fest.
Klasse: 1 550 MPa ) / 600 °C )
Série aérospatiale - Écrous bihexagonaux, à freinage interne, en alliage résistant à chaud à base de nickel NI-PH2601 (Inconel 718), argentés sur filetage - Classification : 1 550 MPa (à température ambiante ) / 600 °C
Aerospace series - Nuts, bihexagonal, self-locking, in heat resisting nickel base alloy NI-PH2601 (Inconel 718), silver plated on thread - Classification: 1 550 MPa (at ambient temperature) / 600 °C
General Information
Relations
Overview
EN 4117:2004 is a European aerospace standard that specifies the requirements for self-locking bihexagonal nuts made from heat-resistant nickel base alloy NI-PH2601 (Inconel 718). These nuts are silver plated on the threads to enhance performance and corrosion resistance. Designed specifically for aerospace applications, this standard ensures nuts achieve a minimum classification of 1,550 MPa tensile strength at ambient temperature and maintain functionality at elevated temperatures up to 600 °C.
This standard is essential for manufacturers and engineers involved in aerospace component design and assembly, ensuring reliable, high-performance fasteners that meet stringent safety and durability criteria.
Key Topics
Material Specification
Nuts are manufactured using heat resisting nickel base alloy NI-PH2601 (Inconel 718), known for exceptional strength and heat resistance, essential for aerospace environments.Self-locking Feature
The nuts have a self-locking design achieved by forming an out-of-round shape in specific zones, ensuring vibration resistance and secure fastening without additional locking devices.Silver Plating on Threads
Threads and chamfers are electrolytically silver plated following EN 2786, providing minimum silver thickness of 5 microns on thread flanks for sizes ≥ MJ6. This plating enhances corrosion protection and reduces galling during assembly.Dimensional and Tolerance Requirements
Dimensions and tolerances align with aerospace standards such as ISO 4095 (bihexagonal drives) and ISO 5855-2 (MJ metric threads). Post-plating measurements ensure compatibility and interchangeability.Classification and Performance
The nuts are classified to withstand a minimum tensile stress of 1,550 MPa at ambient temperature and maintain mechanical integrity at temperatures up to 600 °C, supporting aerospace structural and thermal demands.Marking and Identification
Marking requirements follow EN 2424 (style A) to ensure traceability and compliance throughout manufacturing and maintenance processes.
Applications
EN 4117:2004 compliant nuts are specifically designed for aerospace applications where safety, performance, and reliability are critical:
Aircraft Assembly
Used in fastening critical aircraft structures where high temperature and corrosion resistance are required.Engine Components
Suitable for fastening parts exposed to elevated temperatures within jet engines and other propulsion systems.Spacecraft Hardware
Ideal for components subjected to extreme operational conditions, ensuring secure locking to withstand vibrations and thermal cycling.High-Temperature Fastening Solutions
Applicable wherever mechanical fastening must endure significant mechanical stress and heat without loss of locking reliability.
Related Standards
- ISO 4095 – Aerospace Bihexagonal Drives – Wrenching Configuration
- ISO 5855-2 – Aerospace MJ Threads – Limit Dimensions for Bolts and Nuts
- EN 2424 – Aerospace Series Marking of Aerospace Products
- EN 2786 – Aerospace Series Electrolytic Silver Plating of Fasteners
- EN 2952 – Aerospace Series Heat Resisting Alloy NI-PH2601 (Inconel 718) Bars
- EN 4047 – Aerospace Series Self-Locking Nuts in NI-PH2601 Alloy, Silver Plated
These complementary standards support the application, manufacturing, marking, and performance assessment of aerospace fasteners, ensuring comprehensive quality management in the aerospace supply chain.
Keywords: EN 4117, aerospace nuts, self-locking nuts, Inconel 718 nuts, nickel base alloy fasteners, heat-resistant nuts, silver plated threads, aerospace fastener standards, bihexagonal nuts, high-temperature fasteners, aerospace component standards.
Frequently Asked Questions
EN 4117:2004 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Nuts, bihexagonal, self-locking, in heat resisting nickel base alloy NI-PH2601 (Inconel 718), silver plated on thread - Classification: 1 550 MPa (at ambient temperature) / 600 °C". This standard covers: This standard specifies the characteristics of self-locking bihexagonal nuts in NI-P100HT, silver plated on thread, for aerospace applications. Classification: 1 550 MPa/600 °C
This standard specifies the characteristics of self-locking bihexagonal nuts in NI-P100HT, silver plated on thread, for aerospace applications. Classification: 1 550 MPa/600 °C
EN 4117:2004 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 4117:2004 has the following relationships with other standards: It is inter standard links to EN 4117:2003. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase EN 4117:2004 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-junij-2005
1DGRPHãþD
SIST EN 4117:2004
Aerospace series - Nuts, bihexagonal, self-locking, in heat resisting nickel base
alloy NI-PH2601 (Inconel 718), silver plated on thread - Classification: 1 550 MPa
(at ambient temperature) / 600 °C
Aerospace series - Nuts, bihexagonal, self-locking, in heat resisting nickel base alloy NI-
PH2601 (Inconel 718), silver plated on thread - Classification: 1 550 MPa (at ambient
temperature) / 600 °C
Luft- und Raumfahrt - Zwölfkantmuttern, selbstsichernd, aus hochwarmfester
Nickelbasislegierung NI-PH2601 (Inconel 718), Gewinde versilbert - Klasse: 1 550 MPa
(bei Raumtemperatur) / 600 °C
Série aérospatiale - Écrous bihexagonaux, a freinage interne, en alliage résistant a
chaud a base de nickel NI-PH2601 (Inconel 718), argentés sur filetage - Classification : 1
550 MPa (a température ambiante ) / 600 °C
Ta slovenski standard je istoveten z: EN 4117:2004
ICS:
49.030.30 Matice Nuts
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 4117
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2004
ICS 49.030.30 Supersedes EN 4117:2003
English version
Aerospace series - Nuts, bihexagonal, self-locking, in heat
resisting nickel base alloy NI-PH2601 (Inconel 718), silver plated
on thread - Classification: 1 550 MPa (at ambient temperature) /
600° C
Série aérospatiale - Écrous bihexagonaux, à freinage Luft- und Raumfahrt - Zwölfkantmuttern, selbstsichernd,
interne, en alliage résistant à chaud à base de nickel NI- aus hochwarmfester Nickelbasislegierung NI-PH2601
PH2601 (Inconel 718), argentés sur filetage - Classification (Inconel 718), Gewinde versilbert - Klasse: 1 550 MPa (bei
: 1 550 MPa (à température ambiante ) / 600° C Raumtemperatur) / 600° C
This European Standard was approved by CEN on 11 September 2003.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4117:2004: E
worldwide for CEN national Members.
Contents Page
Foreword.3
1 Scope .4
2 Normative references .4
3 Required characteristics.4
4 Designation .6
5 Marking .6
6 Technical specification .6
Foreword
This document (EN 4117:2004) has been prepared by the European Assoc
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