SIST EN 3913:2009

Aerospace series - Insert, thin wall, self-locking, short, in heat resisting nickel base alloy NI-PH2601 (Ni-P100HT, Inconel 718), silver plated on internal thread, for salvage of components

This standard specifies the characteristics of short, self-locking, thin wall salvage inserts with silver plated internal thread, in NI-PH2601 (NI-P100HT), for aerospace applications.
Maximum test temperature 550 °C.

Luft- und Raumfahrt - Gewindeeinsätze, dünnwandig, selbstsichernd, kurz, aus hochwarmfester Nickelbasislegierung NI-PH2601 (NI-P100HT, Inconel 718), Innengewinde versilbert, zur Reparatur von Bauteilen

Diese Norm legt die Eigenschaften von kurzen, selbstsichernden, dünnwandigen Gewindeeinsätzen zur Reparatur, mit versilbertem Innengewinde, aus NI PH2601 (NI-P100HT), für Anwendungen in der Luft  und Raumfahrt fest.
Maximale Prüftemperatur 550 °C.

Série aérospatiale - Douilles filetées, à paroi mince, à freinage interne, courtes, en alliage résistant à chaud à base de nickel NI-PH2601 (NI-P100HT, Inconel 718), argentées sur filetage intérieur, pour récupération

Aeronavtika - Vložki, tanka stena, samozapiralni, kratki, iz toplotnoodporne zlitine na nikljevi osnovi NI-PH2601 (Ni-P100HT, Inconel 718), posrebreni, posrebren notranji navoj, za popravljanje sestavnih delov

General Information

• Status: Published
• Publication Date: 27-Apr-2009
• ICS: 49.030.30 - Nuts
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 16-Apr-2009
• Due Date: 21-Jun-2009
• Completion Date: 28-Apr-2009
• Ref Project: EN 3913:2007 - Aerospace series - Insert, thin wall, self-locking, short, in heat resisting nickel base alloy NI-PH2601 (Ni-P100HT, Inconel 718), silver plated on internal thread, for salvage of components

Relations

• Refers: SIST EN 3915:2008 - Aerospace series - Insert, thin wall, self-locking, MJ threads, in heat resisting nickel base alloy NI-PH2601 (NI-P100HT, Inconel 718), for salvage of components - Classification: 1 275 MPa (at ambient temperature) / 550 °C - Technical specification
• Effective Date: 28-Jan-2026
• Refers: SIST EN 3298:2008 - Aerospace series - Inserts, thin wall, self-locking - Installation and removal procedure
• Effective Date: 28-Jan-2026
• Refers: SIST EN 840-6:2004+A1:2008 - Mobile waste containers - Part 6: Safety and health requirements
• Effective Date: 28-Jan-2026
• Refers: SIST EN 2786:2008 - Aerospace series - Electrolytic silver plating of fasteners
• Effective Date: 28-Jan-2026
• Refers: SIST EN 2424:2008 - Aerospace series - Marking of aerospace products
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 3916:2008 - Aerospace series - Insert, thin wall - Salvage procedure for components
• Effective Date: 28-Jan-2026

Overview

SIST EN 3913:2009 specifies the characteristics of short, thin wall, self-locking salvage inserts made from heat resisting nickel base alloy NI-PH2601 (also known as Ni-P100HT or Inconel 718), with a silver plated internal thread. This European standard serves the aerospace industry by providing a solution for component salvage and repair when thread integrity in metallic assemblies has been compromised. The inserts are designed to withstand maximum test temperatures up to 550 °C, ensuring reliability in extreme aerospace environments.

Key Topics

• Material Specification:
  The inserts are fabricated from NI-PH2601, a nickel base alloy known for its high temperature and corrosion resistance, often referenced by aerospace manufacturers.

• Self-Locking Mechanism:
  Each insert incorporates a self-locking feature, ensuring secure fastening under vibration and thermal cycling, which are common in aerospace applications.

• Thin Wall, Short Design:
  The compact and thin wall construction allows use in limited spaces or for salvaging lightweight structures without compromising mechanical properties.

• Silver Plating:
  The internal threads are silver plated, enhancing corrosion resistance and promoting smooth threading, especially at elevated temperatures.

• Standard-compliant Dimensions:
  The standard specifies detailed dimensional and tolerance characteristics, as well as marking and identification requirements, ensuring interchangeability and traceability in aerospace applications.

Applications

The self-locking, thin wall salvage inserts specified by SIST EN 3913:2009 are primarily used in:

• Aerospace Component Repair:
  These inserts allow for effective repair of stripped or damaged threaded holes in high-value aerospace structures, such as engine components, landing gears, and structural elements, extending component life and reducing replacement costs.

• High Temperature Environments:
  Used where thermal stability up to 550 °C is crucial, such as in powerplants, nacelles, or areas exposed to extreme operational temperatures.

• Vibration-prone Assemblies:
  The self-locking feature counters loosening from vibration, making these inserts ideal for avionics, seats, and critical fastened joints in aircraft and spacecraft.

• Weight-sensitive Engineering:
  Their thin wall and short form factor help maintain lightweight design principles, important for aerospace and advanced transportation sectors.

Related Standards

SIST EN 3913:2009 references and aligns with several key aerospace and material standards to ensure compatibility and reliable integration:

• EN 2404 – Heat resisting nickel base alloy NI-P100HT: Solution and precipitation treated bars.
• EN 2786 – Electrolytic silver plating of fasteners.
• EN 3298 – Inserts, thin wall, self-locking: Installation and removal procedures.
• EN 3915 – Thin wall, self-locking inserts with MJ threads in NI-PH2601, for salvage applications.
• EN 3916 – Salvage procedure for components using thin wall inserts.
• EN 2424 – Marking of aerospace products.
• ISO 965-1 – Metric screw thread tolerances.
• ISO 5855-2 – MJ threads for bolts and nuts.

Practical Value

By following SIST EN 3913:2009, aerospace manufacturers, maintenance, and repair organizations can:

• Ensure consistent thread repair quality across international supply chains
• Maintain component interchangeability due to standardization
• Increase safety and reliability by using tested, certified replacement parts
• Minimize downtime and extend component service life via effective salvage solutions

Using self-locking, silver plated inserts in nickel-based alloy as specified by this standard ensures high performance and reliability for demanding aerospace environments.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aeronavtika - Vložki, tanka stena, samozapiralni, kratki, iz toplotnoodporne zlitine na nikljevi osnovi NI-PH2601 (Ni-P100HT, Inconel 718), posrebreni, posrebren notranji navoj, za popravljanje sestavnih delovLuft- und Raumfahrt - Gewindeeinsätze, dünnwandig, selbstsichernd, kurz, aus hochwarmfester Nickelbasislegierung NI-PH2601 (NI-P100HT, Inconel 718), Innengewinde versilbert, zur Reparatur von BauteilenSérie aérospatiale - Douilles filetées, à paroi mince, à freinage interne, courtes, en alliage résistant à chaud à base de nickel NI-PH2601 (NI-P100HT, Inconel 718), argentées sur filetage intérieur, pour récupérationAerospace series - Insert, thin wall, self-locking, short, in heat resisting nickel base alloy NI-PH2601 (Ni-P100HT, Inconel 718), silver plated on internal thread, for salvage of components49.030.30MaticeNutsICS:Ta slovenski standard je istoveten z:EN 3913:2007SIST EN 3913:2009en,de01-junij-2009SIST EN 3913:2009SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 3913April 2007ICS 49.030.30 English VersionAerospace series - Insert, thin wall, self-locking, short, in heatresisting nickel base alloy NI-PH2601 (Ni-P100HT, Inconel 718),silver plated on internal thread, for salvage of componentsSérie aérospatiale - Douilles filetées, à paroi mince, àfreinage interne, courtes, en alliage résistant à chaud àbase de nickel NI-PH2601 (NI-P100HT, Inconel 718),argentées sur filetage intérieur, pour récupérationLuft- und Raumfahrt - Gewindeeinsätze, dünnwandig,selbstsichernd, kurz, aus hochwarmfesterNickelbasislegierung NI-PH2601 (NI-P100HT, Inconel 718),Innengewinde versilbert, zur Nacharbeit von BauteilenThis European Standard was approved by CEN on 28 August 2006.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 CEN 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 CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2007 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 3913:2007: ESIST EN 3913:2009
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