SIST EN 4623:2010

Aerospace series - Inserts, MJ threads, self-locking, with self-broaching keys, in heat resisting nickel base alloy NI-PH2601 (Inconel 718), silver plated

This standard specifies the characteristics of self-locking, MJ thread inserts, self-broaching keys, in NI PH2601, silver plated, for aerospace applications.
Classification: 1 550 MPa / 600 °C

Luft- und Raumfahrt - Gewindeeinsätze, MJ-Gewinden, selbstsichernd, mit selbsträumenden Stiften,aus Hochwarmfeste Nickellegierung NI-PH2601 (Inconel 718), Versilbert

Diese Norm legt die Eigenschaften von selbstsichernden Gewindeeinsätzen aus NI-PH2601, versilbert,
MJ-Gewinde und mit selbsträumenden Stiften für Anwendungen in der Luft- und Raumfahrt fest.
Klasse: 1 550 MPa1)/600 °C2).

Série aérospatiale - Douilles filetées, à filetage MJ, à freinage interne, à clavettes auto-brochantes, en alliage résistant à chaud à base de nickel NI-PH2601 (Inconel 718), argentées

Aeronavtika - Vložki, navoj MJ, samozapiralni, s samozagozdnim ključem, iz toplotnoodporne zlitine na nikljevi osnovi NI-PH2601 (Inconel 718), posrebreni

Ta standard opredeljuje značilnosti samozapiralnih vložkov z MJ navojem, s samozagozdnimi ključi, iz NI-PH2601, posrebrenih, za uporabo v aeronavtiki. Klasifikacija: 1550 MPa/600 °C.

General Information

• Status: Published
• Publication Date: 01-Jun-2010
• ICS: 49.030.10 - Screw threads
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 12-May-2010
• Due Date: 17-Jul-2010
• Completion Date: 02-Jun-2010
• Ref Project: EN 4623:2010 - Aerospace series - Inserts, MJ threads, self-locking, with self-broaching keys, in heat resisting nickel base alloy NI-PH2601 (Inconel 718), silver plated

Overview

EN 4623:2010 is a CEN aerospace standard that specifies the characteristics of self-locking MJ thread inserts with self-broaching keys, manufactured in the heat‑resisting nickel‑base alloy NI‑PH2601 (Inconel 718) and silver plated. Intended for aerospace applications, the standard defines configuration, dimensions, material, surface treatment, marking and identification, and product designation. Classification is given as 1 550 MPa / 600 °C.

Key topics and requirements

• Product scope: MJ thread inserts that are self‑locking and fitted with self‑broaching keys, supplied in NI‑PH2601 (Inconel 718) with electrolytic silver plating.
• Materials & hardness:
  • Insert material: EN 2952 NI‑PH2601, heat treated to deliver 370–480 HV.
  • Keys: stainless steel or nickel alloy with treatment to achieve HV > 600.
• Surface treatment: Electrolytic silver plating per EN 2786.
• Dimensions & tolerances: Detailed in the standard (Figures and Tables). Dimensions/tolerances apply after silver plating and include normal and repair oversize options (normal, first repair, second repair).
• Functional characteristics:
  • Self‑locking achieved by controlled out‑of‑round form in the key area.
  • Self‑broaching keys sized and located as specified; total key length is limited.
• Performance classification:
  • 1 550 MPa - minimum tensile stress resistance at ambient temperature (when tested with a higher‑strength bolt).
  • 600 °C - maximum service temperature without permanent alteration (note: maximum temperature is conditioned by the MoS2 lubricant).
• Identification & marking: Marking style F per EN 2424:2008; manufacturer marks per TR 3198.
• Associated documentation: Technical specification and procedures referenced (EN 4621, EN 4620 for design, EN 4619 for installation/removal).

Applications and users

• Typical use: high‑temperature, high‑strength threaded repair and fastening in aircraft structures, engines, and hot‑section assemblies.
• Primary users:
  • Aerospace fastener manufacturers and suppliers (production and quality control)
  • Aircraft structural designers and engineers (fastener selection and design)
  • Maintenance, repair and overhaul (MRO) teams (repair insert selection and installation)
  • Procurement and certification bodies ensuring compliance with aerospace material and marking requirements

Related standards

• EN 2952 (NI‑PH2601 material specification)
• EN 2786 (electrolytic silver plating)
• EN 4620 (design standard for MJ inserts)
• EN 4619 (installation & removal procedures)
• EN 4621 (technical specification)
• EN 2424, TR 3198, ISO 5855 (MJ thread rules)

EN 4623:2010 is essential when specifying MJ thread inserts, Inconel 718 aerospace inserts, or self‑locking, self‑broaching keyed inserts for high‑temperature, high‑stress aerospace applications.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Luft- und Raumfahrt - Gewindeeinsätze, MJ-Gewinden, selbstsichernd, mit selbsträumenden Stiften,aus Hochwarmfeste Nickellegierung NI-PH2601 (Inconel 718), VersilbertSérie aérospatiale - Douilles filetées, à filetage MJ, à freinage interne, à clavettes auto-brochantes, en alliage résistant à chaud à base de nickel NI-PH2601 (Inconel 718), argentéesAerospace series - Inserts, MJ threads, self-locking, with self-broaching keys, in heat resisting nickel base alloy NI-PH2601 (Inconel 718), silver plated49.030.10NavojiScrew threadsICS:Ta slovenski standard je istoveten z:EN 4623:2010SIST EN 4623:2010en01-julij-2010SIST EN 4623:2010SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 4623
April 2010 ICS 49.030.30 English Version
Aerospace series - Inserts, MJ threads, self-locking, with self-broaching keys, in heat resisting nickel base alloy NI-PH2601 (Inconel 718), silver plated
Série aérospatiale - Douilles filetées, à filetage MJ, à freinage interne, à clavettes auto-brochantes, en alliage résistant à chaud à base de nickel NI-PH2601 (Inconel 718), argentées
Luft- und Raumfahrt - Gewindeeinsätze, MJ-Gewinden, selbstsichernd, mit selbsträumenden Stiften, aus Hochwarmfeste Nickellegierung NI-PH2601 (Inconel 718), Versilbert This European Standard was approved by CEN on 16 January 2010.
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 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 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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B-1000 Brussels © 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4623:2010: ESIST EN 4623:2010
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