EN 3237:1998
(Main)Aerospace series - Inserts, thin wall, self-locking, long, in heat resisting nickel base alloy NI-P100HT (Inconel 718), silver plated internal thread
Aerospace series - Inserts, thin wall, self-locking, long, in heat resisting nickel base alloy NI-P100HT (Inconel 718), silver plated internal thread
This standard specifies the characteristics of self-locking, long, thin wall inserts, in NI-P100HT, with silver plated internal thread, for aerospace applications. Maximum test temperature: 550°C.
Luft- und Raumfahrt - Gewindeeinsätze, dünnwandig, selbstsichernd, lang, aus hochwarmfester Nickelbasislegierung NI-P100HT (Inconel 718), Innengewinde versilbert
Diese Norm legt die Eigenschaften von selbstsichernden, langen, dünnwandigen Gewindeeinsätzen, aus NI-P100HT, mit versilbertem Innengewinde, zur Verwendung in der Luft- und Raumfahrt fest. Maximale Prüftemperatur: 550°C.
Série aérospatiale - Douilles filetées, à paroi mince, à freinage interne, longues, en alliage résistant à chaud à base de nickel NI-P100HT (Inconel 718), filetage intérieur argenté
La présente norme spécifie les caractéristiques des douilles filetées à paroi mince, à freinage interne, longues, en NI-P100HT, à filetage intérieur argenté, pour applications aérospatiales. Température maximale d'essai: 550°C.
Aerospace series - Inserts, thin wall, self-locking, long, in heat resisting nickel base alloy NI-P100HT (Inconel 718), silver plated internal thread
General Information
- Status
- Published
- Publication Date
- 20-Jan-1998
- Withdrawal Date
- 30-Jul-1998
- Technical Committee
- ASD-STAN - Aerospace
- Drafting Committee
- ASD-STAN/D 3 - Mechanical
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 21-Jan-2024
- Completion Date
- 21-Jan-2026
Relations
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
Overview
EN 3237:1998 is a European standard established by CEN that specifies the technical characteristics of aerospace-grade inserts. These inserts are long, thin-wall, and self-locking, made from a heat-resistant nickel base alloy NI-P100HT (commonly known as Inconel 718). They feature silver-plated internal threads designed to optimize performance and durability in high-temperature aerospace environments. The inserts are tested for operational reliability up to a maximum temperature of 550°C, making them suitable for demanding aerospace applications where thermal resistance and secure fastening are critical.
Key Topics
Material Composition
The inserts are manufactured from NI-P100HT, a nickel-based superalloy renowned for exceptional heat resistance and mechanical strength under extreme conditions.Design Features
- Thin wall construction ensures lightweight integration without compromising mechanical integrity.
- Self-locking mechanism enhances thread security, preventing loosening under vibration and thermal cycling common in aerospace environments.
- Long inserts allow for deeper thread engagement, providing enhanced load distribution and durability.
Surface Treatment
The internal threads are silver plated to improve corrosion resistance, conductivity, and wear resistance, which is vital to maintain reliability in aerospace assemblies.Thermal Performance
These inserts have been tested and certified to withstand temperatures up to 550°C, suitable for aerospace components exposed to elevated operating temperatures.
Applications
Aerospace Manufacturing
Utilized extensively in aircraft and spacecraft assembly where fastening components must maintain integrity under thermal stress and vibration.High-Temperature Fastening Solutions
Ideal for engine components, exhaust systems, and other aerospace parts exposed to elevated heat levels.Maintenance and Repair Operations
Used to replace or reinforce thread connections in aerospace maintenance, ensuring continued safety and performance.Component Fabrication
Suitable in designs demanding lightweight but durable fasteners with superior heat and corrosion resistance.
Related Standards
- EN 1991 - Structural design related to aerospace fasteners and assemblies.
- EN 3400 - Specifications for nickel base alloys in mechanical applications.
- ISO 8501 - Surface preparation standards applicable for plating in aerospace fasteners.
- MIL-DTL-38799 (US Military Standard) - Aerospace self-locking inserts and fastening hardware.
Keywords: EN 3237, aerospace inserts, self-locking inserts, NI-P100HT, Inconel 718, heat resistant fasteners, silver plated threads, thin wall inserts, high temperature inserts, aerospace fasteners, CEN standards.
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Frequently Asked Questions
EN 3237:1998 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Inserts, thin wall, self-locking, long, in heat resisting nickel base alloy NI-P100HT (Inconel 718), silver plated internal thread". This standard covers: This standard specifies the characteristics of self-locking, long, thin wall inserts, in NI-P100HT, with silver plated internal thread, for aerospace applications. Maximum test temperature: 550°C.
This standard specifies the characteristics of self-locking, long, thin wall inserts, in NI-P100HT, with silver plated internal thread, for aerospace applications. Maximum test temperature: 550°C.
EN 3237:1998 is classified under the following ICS (International Classification for Standards) categories: 49.030.99 - Other fasteners. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 3237:1998 has the following relationships with other standards: It is inter standard links to EN 3298:2008, EN 267:2009+A1:2011. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 3237:1998 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 - Inserts, thin wall, self-locking, long, in heat resisting nickel base alloy NI-P100HT (Inconel 718), silver plated internal threadLuft- und Raumfahrt - Gewindeeinsätze, dünnwandig, selbstsichernd, lang, aus hochwarmfester Nickelbasislegierung NI-P100HT (Inconel 718), Innengewinde versilbertSérie aérospatiale - Douilles filetées, a paroi mince, a freinage interne, longues, en alliage résistant a chaud
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