SIST EN 4619:2010
(Main)Aerospace series - Inserts, MJ threads, self-locking, with self-broaching keys - Installation and removal procedure
Aerospace series - Inserts, MJ threads, self-locking, with self-broaching keys - Installation and removal procedure
This standard specifies the installation and removal procedure (hole profile, tools) of self-locking, self broaching key, MJ thread inserts defined by EN standards, for aerospace applications.
Luft- und Raumfahrt - Gewindeeinsätze, MJ-Gewinden, selbstsichernd, mit selbsträumenden Stiften - Ein- und Ausbauverfahren
Diese Norm legt das Ein- und Ausbauverfahren (Lochprofil, Werkzeuge) von selbstsichernden Gewindeeinsätzen
mit MJ-Gewinden und mit selbsträumenden Stiften nach EN-Normen zur Verwendung in der Luftund
Raumfahrt fest.
Série aérospatiale - Douilles filetées, à filetage MJ, à freinage interne, à clavettes auto-brochants - Procédure d'installation et d'extraction
Aeronavtika - Vložki, navoj MJ, samozapiralni, s samozagozdnim ključem - Postopek namestitve in odstranitve
Ta standard določa postopek namestitve in odstranitve (profili lukenj, orodja) samozapiralnega samozagozdnega ključa in vložkov z navojem MJ, opredeljenih z EN standardi, za uporabo v aeronavtiki.
General Information
- Status
- Published
- Publication Date
- 08-Apr-2010
- Technical Committee
- I13 - Imaginarni 13
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 22-Mar-2010
- Due Date
- 27-May-2010
- Completion Date
- 09-Apr-2010
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
- Effective Date
- 28-Jan-2026
Overview
SIST EN 4619:2010 is a European standard specifically developed for the aerospace industry, detailing the installation and removal procedures of self-locking MJ thread inserts with self-broaching keys. These inserts are defined by EN standards and widely applied in aerospace components where secure, vibration-resistant threaded connections are critical. The document provides guidance on the correct hole profiles, installation tools, and inspection requirements, ensuring safe, repeatable, and high-quality results in mission-critical aerospace applications.
Key Topics
Scope and Applicability
- Defines installation and removal procedures for self-locking MJ thread inserts with self-broaching keys.
- Covers both initial installation and removal for maintenance or repair purposes.
Preparation Before Installation
- Outlines the importance of preparing the installation hole, ensuring it is free from burrs, debris, grease, or oil.
- Emphasizes inspection of the insert before use.
Installation Tools and Methods
- Specifies required tools for both manual (hand) and powered (air pressure) installation.
- Each insert reference may require a specific tool for correct assembly.
- Hand tools and air-powered guns are described as acceptable methods.
Installation Procedure
- Lubrication of inserts is essential, especially when used with aluminium or magnesium alloys, to prevent galvanic corrosion.
- Step-by-step instructions for positioning, screwing, and broaching the keys into the component.
Inspection and Quality Control
- Guidance on checking the depth and seating of both insert and keys after installation.
- Requirement to verify minimum self-locking torque using standardized test bolts and gauges.
Removal and Replacement
- Procedures for safely drilling, milling, or grinding away self-broaching keys for insert extraction.
- Recommendations for first and second repair size inserts if the original hole is damaged.
Applications
Aerospace Fastening Solutions
- Used in aircraft structures, engine assemblies, and critical fastening points where high vibration could cause loosening of threads.
- Supports both production and maintenance environments, enabling reliable thread repair and ensuring long-term serviceability.
Maintenance, Repair, and Overhaul (MRO)
- Procedures outlined facilitate efficient insert replacement, prolonging component lifespans and reducing downtime.
- Essential for restoring original thread strength in damaged or worn-out holes.
Quality Assurance in Manufacturing
- Standardized procedures help ensure consistency, traceability, and airworthiness compliance across aerospace manufacturing projects.
Related Standards
For comprehensive compliance and system compatibility, refer to the following standards alongside SIST EN 4619:2010:
- EN 4620: Design standard for aerospace MJ thread self-locking inserts with self-broaching keys.
- EN 4622: Inserts in heat-resisting steel FE-PA2601 (A286), MoS coated.
- EN 4623: Inserts in heat-resisting nickel-base alloy NI-PH2601 (Inconel 718), silver-plated.
- EN 4624: Inserts in heat-resisting nickel-base alloy NI-PH1302 (Waspaloy), silver-plated.
- ISO 5855-1 and ISO 5855-2: General requirements and dimensional limits for aerospace MJ threads.
Practical Value
Adhering to SIST EN 4619:2010 enhances component reliability, facilitates regulatory compliance, and ensures a robust approach to threaded fastening in aerospace applications. By following the specified installation and inspection methods, organizations help prevent premature failures, simplify maintenance activities, and uphold quality standards central to safety-critical aerospace operations.
For aerospace engineers, maintenance professionals, and manufacturers, applying this standard ensures the highest levels of fastening integrity and contributes to overall airworthiness and operational efficiency.
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Frequently Asked Questions
SIST EN 4619:2010 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Inserts, MJ threads, self-locking, with self-broaching keys - Installation and removal procedure". This standard covers: This standard specifies the installation and removal procedure (hole profile, tools) of self-locking, self broaching key, MJ thread inserts defined by EN standards, for aerospace applications.
This standard specifies the installation and removal procedure (hole profile, tools) of self-locking, self broaching key, MJ thread inserts defined by EN standards, for aerospace applications.
SIST EN 4619:2010 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 4619:2010 has the following relationships with other standards: It is inter standard links to SIST EN 840-6:2004+A1:2008, SIST EN 13848-1:2004+A1:2008, SIST EN 4621:2010, SIST EN 4624:2010, SIST EN 4622:2010, SIST EN 4623:2010, SIST EN 4620:2010. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 4619:2010 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)
SLOVENSKI STANDARD
01-maj-2010
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3RVWRSHNQDPHVWLWYHLQRGVWUDQLWYH
Aerospace series - Inserts, MJ threads, self-locking, with self-broaching keys -
Installation and removal procedure
Luft- und Raumfahrt - Gewindeeinsätze, MJ-Gewinden, selbstsichernd, mit
selbsträumenden Stiften - Ein- und Ausbauverfahren
Série aérospatiale - Douilles filetées, à filetage MJ, à freinage interne, à clavettes auto-
brochants - Procédure d'installation et d'extraction
Ta slovenski standard je istoveten z: EN 4619:2010
ICS:
49.030.30 Matice Nuts
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 4619
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2010
ICS 49.030.30
English Version
Aerospace series - Inserts, MJ threads, self-locking, with self-
broaching keys - Installation and removal procedure
Série aérospatiale - Douilles filetées, à filetage MJ, à Luft- und Raumfahrt - Gewindeeinsätze, MJ-Gewinden,
freinage interne, à clavettes auto-brochants - Procédure selbstsichernd, mit selbsträumenden Stiften - Ein- und
d'installation et d'extraction Ausbauverfahren
This European Standard was approved by CEN on 9 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.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4619:2010: E
worldwide for CEN national Members.
Contents Page
Foreword .3
1 Scope .4
2 Normative references .4
3 Insert information .4
4 Inspection requirements before installation .6
5 Installation tools .6
5.1 General .6
5.2 Hand installation .7
5.3 Air pressure installation .8
6 Checks of insert position and keys broaching .9
7 Inspection of minimum self-locking torque . 10
8 Insert replacement . 10
8.1 Insert removal . 10
8.2 Repair . 12
Foreword
This document (EN 4619:2010) has been prepared by the Aerospace and Defence Industries Association of
Europe - Standardization (ASD-STAN).
After enquiries and votes carried out in accordance with the rules of this Association, this Standard has
received the approval of the National Associations and the Official Services of the member countries of ASD,
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 September 2010, and conflicting national standards shall be
withdrawn at the latest by September 2010.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: 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 the United Kingdom.
1 Scope
This standard specifies the installation and removal procedure (hole profile, tools) of self-locking,
self-broaching key, MJ thread inserts defined by EN standards, for aerospace applications.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
EN 4620, Aerospace series — Inserts, MJ threads, self-locking, with self-broaching keys — Design standard
EN 4622, Aerospace series — Inserts, MJ threads, self-locking, with self-broaching keys, in heat resisting
steel FE-PA2601 (A286), MoS coated
EN 4623, Aerospace series — Inserts, MJ threads, self-locking, with self-broaching keys, in heat resisting
nickel base alloy NI-PH2601 (Inconel 718), silver plated
EN 4624, Aerospace series — Inserts, MJ threads, self-locking, with self-broaching keys, in heat resisting
nickel base alloy NI-PH1302 (Waspaloy), silver plate
ISO 5855-1, Aerospace — MJ threads — Part 1: General requirements
ISO 5855-2, Aerospace — MJ threads — Part 2: Limit dimensions for bolts and nuts
3 Insert information
Tables 1 to 3 provide the cross reference between the insert codification, the related bolt thread and the
tapped hole diameter.
Table 1 — Normal size insert
Bolt thread Tapped hole Tapped hole
Insert reference
a, b b
reference
diameter diameter
EN 4622-050-0
EN 4624-050-0 EN 4620-050-0
MJ5×0,8 MJ9×1-4H5H
EN 4623-050-0
EN 4622-060-0
EN 4624-060-0 EN 4620-060-0
MJ6×1 MJ10×1-4H5H
EN 4623-060-0
EN 4622-070-0
EN 4624-070-0 MJ7×1 MJ11×1-4H5H EN 4620-070-0
EN 4623-070-0
EN 4622-080-0
EN 4624-080-0 MJ8×1 MJ12×1-4H5H EN 4620-080-0
EN 4623-080-0
EN 4622-100-0
EN 4624-100-0 EN 4620-100-0
MJ10×1,25 MJ14×1-4H5H
EN 4623-100-0
a
According to ISO 5855-2.
b
According to ISO 5855-1.
Table 2 — First repair size insert
Bolt thread Tapped hole Tapped hole
Insert reference
a, b b
reference
diameter diameter
EN 4622-050-1
EN 4624-050-1 EN 4620-050-1
MJ5×0,8 MJ10×1-4H5H
EN 4623-050-1
EN 4622-060-1
EN 4624-060-1 EN 4620-060-1
MJ6×1 MJ11×1-4H5H
EN 4623-060-1
EN 4622-070-1
EN 4624-070-1 EN 4620-070-1
MJ7×1 MJ12×1-4H5H
EN 4623-070-1
EN 4622-080-1
EN 4624-080-1 EN 4620-080-1
MJ8×1 MJS13×1-4H5H
EN 4623-080-1
EN 4622-100-1
EN 4624-100-1 EN 4620-100-1
MJ10×1,25 MJ15×1-4H5H
EN 4623-100-1
a
According to ISO 5855-2.
b
According to ISO 5855-1 except MJS13×1 (see Table 4).
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