SIST EN 3672:2024
(Main)Aerospace series - Shank nut, self-locking, in heat resisting nickel base alloy NI-P101HT (Waspaloy), silver plated, for 30° swage - Classification: 1 210 MPa (at ambient temperature) / 730 °C
Aerospace series - Shank nut, self-locking, in heat resisting nickel base alloy NI-P101HT (Waspaloy), silver plated, for 30° swage - Classification: 1 210 MPa (at ambient temperature) / 730 °C
This document specifies the characteristics of self-locking shank nuts in NI-P101HT, silver plated, for use in 30° cone holes, for aerospace applications.
Classification: 1 210 MPa /730 °C .
Luft- und Raumfahrt - Einnietmutter, selbstsichernd, aus hochwarmfester Nickelbasislegierung NI-P101HT (Waspaloy), versilbert, für 30° Aufweitung - Klasse: 1 210 MPa (bei Raumtemperatur) / 730 °C
Dieses Dokument legt die Eigenschaften von selbstsichernden Einnietmuttern aus NI P101HT, versilbert, für den Gebrauch bei konischen Bohrungen von 30° zur Verwendung in der Luft und Raumfahrt fest.
Klasse: 1 210 MPa /730 °C .
Série aérospatiale - Écrous à sertir, à freinage interne, en alliage résistant à chaud à base de nickel NI-P101HT (Waspaloy), argentés, pour sertissage 30° - Classification: 1 210 MPa (à température ambiante) / 730 °C
Le présent document spécifie les caractéristiques des écrous à sertir, à freinage interne, en NI-P101HT, argentés, pour utilisation dans des trous coniques de 30°, pour les applications aérospatiales.
Classification : 1 210 MPa /730 °C.
Aeronavtika - Zakovičena matica, samovarovalna, iz toplotnoodporne zlitine na nikljevi osnovi NI-P101HT (Waspaloy), posrebrena, za odprtine 30° - Klasifikacija: 1210 MPa (pri okoljski temperaturi)/730 °C
Ta dokument določa lastnosti posrebrenih, samovarovalnih zakovičenih matic iz zlitine NI-P101HT za uporabo v konusnih odprtinah 30° v aeronavtiki.
Klasifikacija: 1210 Mpa/730 °C.
General Information
Relations
Overview
SIST EN 3672:2024 is a European Standard issued by CEN that specifies the characteristics of self-locking shank nuts made from the heat-resisting nickel base alloy NI-P101HT (commonly known as Waspaloy). These shank nuts are silver plated and designed for use in aerospace applications within 30° cone holes, also referred to as 30° swage fittings. The standard defines the mechanical classification as 1,210 MPa strength at ambient temperature and heat resistance up to 730 °C. This standard supersedes the previous edition EN 3672:2016 and incorporates updated normative references, additional terms and definitions, and editorial revisions, ensuring current aerospace manufacturing and safety requirements are met.
Key Topics
Material Specification: The nuts are manufactured from NI-P101HT (Waspaloy), a heat-resistant nickel-based alloy known for high strength and excellent performance at elevated temperatures, compliant with EN 2959 or EN 3220.
Self-Locking Feature: The nuts incorporate a self-locking mechanism achieved by slight form-out-round deformation in specific thread areas, ensuring secure fastening under vibration and thermal cycling common in aerospace environments.
Silver Plating: The standard mandates electrolytic silver plating according to EN 2786 to enhance corrosion resistance, electrical conductivity, and surface finish. Silver thickness is specified between 5 µm and 15 µm on external surfaces and minimum 5 µm on threads ≥ MJ6.
Dimensions and Tolerances: Detailed dimensional requirements, including thread type (MJ5 to MJ8), cone hole angle (30°), and precise tolerances on all critical dimensions are defined, following ISO 5855-2 for MJ threads.
Mechanical Classification: Designation 1,210 MPa strength at ambient temperature and thermal resistance up to 730 °C, ensuring reliable performance in demanding aerospace applications such as turbine engines and airframe structures.
Marking and Identification: Marking requirements adhere to EN 2424 (Style A), which facilitates traceability and standard identification, crucial for aerospace quality assurance.
Applications
SIST EN 3672:2024 shank nuts are specifically tailored for aerospace fastener systems where high mechanical strength and heat resistance are essential. Typical applications include:
Jet Engine Components: Fastening critical parts exposed to high temperatures up to 730 °C, such as combustion chambers, turbine stages, and exhaust assemblies.
Airframe Fastening: Components requiring self-locking nuts that maintain secure locking under thermal expansion and mechanical vibration in aircraft structures.
High-Temperature Assemblies: Heat-resistant alloy fasteners used in aerospace systems where exposure to extreme environments is common, providing durability and safety.
Swaged Connection Systems: Fasteners designed for 30° cone hole swage fittings offer precision engagement and mechanical locking essential in aerospace assemblies.
Related Standards
To ensure comprehensive compliance and performance in aerospace applications, SIST EN 3672:2024 references and should be used alongside several related standards:
EN 2959: Defines the heat-resistant nickel alloy NI-PH1302 (Waspaloy) bar specifications for forged fasteners.
EN 3220: Specifies cold worked and softened NI-P101HT alloy bars and wire for continuous forging or extrusion for fasteners.
EN 2786: Covers the procedures and requirements for electrolytic silver plating of fasteners.
EN 3005: Provides the technical specification for self-locking nuts in heat-resistant nickel base alloys.
EN 2424: Details marking requirements for aerospace products for traceability.
ISO 5855-2: Addresses limit dimensions for bolts and nuts with MJ threads used in aerospace fasteners.
Conclusion
SIST EN 3672:2024 sets the benchmark for high-performance, self-locking shank nuts used in aerospace applications that demand exceptional heat resistance and mechanical strength. By specifying rigorous material, dimensional, plating, and locking features, the standard ensures fastener reliability, safety, and interoperability across aerospace manufacturing sectors. Compliance with SIST EN 3672:2024 helps manufacturers and users maintain consistent quality and performance in critical aerospace fastening components.
Keywords: SIST EN 3672:2024, aerospace fasteners, self-locking shank nut, nickel base alloy, Waspaloy, heat-resistant nuts, silver plated, 30° swage, MJ threads, aerospace standard, high temperature fasteners, CEN aerospace series.
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2024
Aeronavtika - Zakovičena matica, samovarovalna, iz toplotnoodporne zlitine na
nikljevi osnovi NI-P101HT (Waspaloy), posrebrena, za odprtine 30° - Klasifikacija:
1210 MPa (pri okoljski temperaturi)/730 °C
Aerospace series - Shank nut, self-locking, in heat resisting nickel base alloy NI-P101HT
(Waspaloy), silver plated, for 30° swage - Classification: 1 210 MPa (at ambient
temperature) / 730 °C
Luft- und Raumfahrt - Einnietmutter, selbstsichernd, aus hochwarmfester
Nickelbasislegierung NI-P101HT (Waspaloy), versilbert, für 30° Aufweitung - Klasse: 1
210 MPa (bei Raumtemperatur) / 730 °C
Série aérospatiale - Écrous à sertir, à freinage interne, en alliage résistant à chaud à
base de nickel NI-P101HT (Waspaloy), argentés, pour sertissage 30° - Classification: 1
210 MPa (à température ambiante) / 730 °C
Ta slovenski standard je istoveten z: EN 3672:2024
ICS:
49.030.30 Matice Nuts
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 3672
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2024
EUROPÄISCHE NORM
ICS 49.030.30 Supersedes EN 3672:2016
English Version
Aerospace series - Shank nut, self-locking, in heat resisting
nickel base alloy NI-P101HT (Waspaloy), silver plated, for
30° swage - Classification: 1 210 MPa (at ambient
temperature) / 730 °C
Série aérospatiale - Écrou à sertir, à freinage interne, Luft- und Raumfahrt - Einnietmutter, selbstsichernd,
en alliage résistant à chaud base nickel NI-P101HT aus hochwarmfester Nickelbasislegierung NI-P101HT
(Waspaloy), argenté, pour sertissage 30° - (Waspaloy), versilbert, für 30° Aufweitung - Klasse: 1
Classification : 1 210 MPa (à température 210 MPa (bei Raumtemperatur) / 730 °C
ambiante)/730 °C
This European Standard was approved by CEN on 27 February 2024.
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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3672:2024 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Required characteristics . 4
4.1 Configuration, dimensions, tolerances, masses . 4
4.2 Material . 4
4.3 Surface treatment . 4
5 Designation . 7
6 Marking . 7
7 Technical specification . 7
European foreword
This document (EN 3672:2024) has been prepared by ASD-STAN.
After enquiries and votes carried out in accordance with the rules of this Association, this document has
received the approval of the National Associations and the Official Services of the member countries of
ASD-STAN, 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 December 2024, and conflicting nation
...
Frequently Asked Questions
SIST EN 3672:2024 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Shank nut, self-locking, in heat resisting nickel base alloy NI-P101HT (Waspaloy), silver plated, for 30° swage - Classification: 1 210 MPa (at ambient temperature) / 730 °C". This standard covers: This document specifies the characteristics of self-locking shank nuts in NI-P101HT, silver plated, for use in 30° cone holes, for aerospace applications. Classification: 1 210 MPa /730 °C .
This document specifies the characteristics of self-locking shank nuts in NI-P101HT, silver plated, for use in 30° cone holes, for aerospace applications. Classification: 1 210 MPa /730 °C .
SIST EN 3672:2024 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.
SIST EN 3672:2024 has the following relationships with other standards: It is inter standard links to SIST EN 3672:2017. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase SIST EN 3672:2024 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 SIST standards.
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