EN 3913:2007
(Main)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
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
- 03-Apr-2007
- Withdrawal Date
- 30-Oct-2007
- Technical Committee
- ASD-STAN - Aerospace
- Drafting Committee
- ASD-STAN/D 3 - Mechanical
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 30-Jun-2017
- Completion Date
- 28-Jan-2026
Relations
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
Overview
EN 3913:2007 (CEN) specifies the characteristics of short, thin-wall, self-locking salvage inserts manufactured in heat-resisting nickel-base alloy NI-PH2601 (also referenced as NI-P100HT / Inconel 718). These inserts are intended for aerospace component repair and feature a silver-plated internal thread. The standard defines dimensional, material, surface treatment and identification requirements for inserts qualified for service and test exposure up to 550 C.
This document is part of the aerospace series of standards and is used where durable, high-temperature repair inserts are required to restore or salvage threaded features in airframe and engine components.
Key Topics
Material and treatment
- Base alloy: NI-PH2601 (NI-P100HT, Inconel 718) as specified by EN 2404 and related EN documents.
- Inserts are solution- and precipitation-treated per referenced material standards where applicable.
Design and dimensions
- Short, thin-wall, self-locking configuration with detailed dimensional tables and tolerances (dimensions apply after silver plating).
- Thread forms conform to ISO 5855-2 (MJ threads) and ISO 965-1 where applicable.
- Features include knurling across threads (to produce serrations), internal-thread locking zone, optional axial or radial grooves, and equi-spaced slots as indicated in the standard illustrations.
Surface treatment and plating
- Internal thread and counterbore are silver-plated in accordance with EN 2786.
- Plating coverage and minimum thickness requirements are specified for different thread codes (complete coverage or defined minimum thickness where required).
- Surface finish and edge removal requirements are defined; specified values apply prior to silver plating.
Marking and identification
- Marking style follows EN 2424 (style G) and manufacturer identification monograms per TR 3198.
- Designation examples and coding (for ordering and traceability) are provided, e.g. EN3913-050 for specific thread sizes.
Applications
EN 3913:2007 inserts are intended for aerospace salvage and repair operations where original threaded features have been damaged or worn. Typical applications include:
- Repair of airframe or engine structural components requiring high-temperature resistance.
- Restoration of threaded holes where minimal material removal and compact insert geometry are needed.
- Use in maintenance, repair and overhaul (MRO) processes that require traceable, standardized hardware compatible with aerospace installation procedures.
Practical benefits include corrosion- and heat-resistant performance (due to Inconel 718 alloy), controlled thread locking, and standardized sizing for interchangeability with related aerospace inserts.
Related Standards
Key normative and supporting documents referenced by EN 3913:2007 include:
- ISO 965-1 - Metric screw thread tolerances
- ISO 5855-2 - Aerospace MJ threads
- EN 2404 / EN 4376 / EN 4377 - Material specifications for NI-P100HT / NI-PH2601
- EN 2786 - Electrolytic silver plating of fasteners
- EN 3298 and EN 3916 - Installation and salvage procedures for thin-wall inserts
- EN 3915 - Technical specification for similar NI-PH2601 inserts
- TR 3198 - Manufacturers' identification monograms
For implementation, reference the full EN 3913:2007 text and listed normative standards to ensure compliance with dimensional, material, marking and plating requirements prior to procurement or use in repair procedures.
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Frequently Asked Questions
EN 3913:2007 is a standard published by the European Committee for Standardization (CEN). Its full title is "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 covers: 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.
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.
EN 3913:2007 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 3913:2007 has the following relationships with other standards: It is inter standard links to EN 2424:2008, EN 3298:2008, EN 3916:2008, EN 840-6:2004+A1:2008, EN 3915:2008, EN 2786:2008. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 3913:2007 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.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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