Aerospace series - Non-metallic materials - Anaerobic polymerisable compounds - Threadlocking - Torque strength 19 Nm

This European Standard specifies the requirements relating to anaerobic polymerisable threadlocking compounds having a torque strength of 19 Nm for aerospace applications.

Luft- und Raumfahrt - Nichtmetallische Werkstoffe - Anaerobe polymerisierbare Klebstoffe - Schraubensicherung - Torsionsfestigkeit 19 Nm

Diese Norm legt die Anforderungen an anaerobe polymerisierbare Klebstoffe zur Gewindesicherung mit einer Torsionsfestigkeit von 19 Nm zur Anwendung in der Luft- und Raumfahrt fest.

Série aérospatiale - Matériaux non-métalliques - Composé polymérisable anaérobie - Agent de freinage - Résistance au couple de torsion 19 Nm

La présente Norme européenne spécifie les exigences relatives aux composés polymérisables anaérobies avec agent de freinage ayant une résistance au couple de torsion de 19 Nm pour les applications aérospatiales.

Aeronavtika - Nekovinski materiali - Anaerobne polimerizirajoče zmesi - Zavarovanje vijakov - Navorna trdnost 19 Nm

General Information

Status
Published
Publication Date
22-Jan-2013
Withdrawal Date
30-Jul-2013
ICS
49.025.50 - Adhesives
Technical Committee
ASD-STAN - Aerospace
Drafting Committee
ASD-STAN/D 5 - Non-Metallic
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
23-Jan-2013
Completion Date
23-Jan-2013
Ref Project
SIST EN 4492:2014 - Aerospace series - Non-metallic materials - Anaerobic polymerisable compounds - Threadlocking - Torque strength 19 Nm

Overview

EN 4492:2013 is a CEN European Standard in the Aerospace series that specifies requirements for anaerobic polymerisable threadlocking compounds used in aerospace applications. The standard covers non‑metallic adhesive materials formulated to give a torque strength of 19 Nm, and defines composition, delivery condition, processing, quality and environmental performance criteria for use on safety‑critical threaded assemblies.

Key topics and technical requirements

  • Material type: One‑part, anaerobic polymerisable threadlocking compound (acrylic ester of a polyhydroxy compound).
  • Performance targets:
    • Torque strength: > 19 Nm (characteristic 3.315).
    • Static shear strength: > 17 MPa (characteristic 3.310).
  • Delivery and processing:
    • Form: Liquid; processing condition: at least 24 h at (23 ± 2) °C.
    • Cure rate: > 4 minutes; reactivity with zinc: < 30 minutes; gel time stability at 100 °C: > 10 minutes.
    • Viscosity grades: multiple grades specified (examples: <50 mm2/s; 125±25; 500±250 for Grades 01–03; Grade 04: defined mPa·s values and thixotropic index).
  • Storage and safety:
    • Storage: < 25 °C, out of direct sunlight, in presence of oxygen.
    • Shelf life: not less than 12 months under storage conditions.
    • Flashpoint: > 100 °C.
  • Environmental testing and retention:
    • Dry heat and water immersion protocols with retention criteria: e.g., static shear and torque strength retention percentages after exposures (examples include >95% or >70% depending on condition and duration).
  • Quality and designation: Quality assurance and designation reference EN 3792 and the Aerospace series organisation guidance (EN 4385). The standard is classed as a level 3 material standard.

Applications and users

  • Typical uses: Locking and securing threaded fasteners and bolted assemblies in aircraft structures, engines, and avionic installations where predictable torque retention and resistance to vibration and thermal cycling are critical.
  • Who uses EN 4492: Aerospace material specifiers, adhesive manufacturers and suppliers, OEM procurement, aerospace materials engineers, maintenance/repair organizations, and quality assurance personnel responsible for qualifying threadlocking compounds for flight hardware.

Related standards

  • EN 3792 - Aerospace series: Anaerobic polymerisable compounds - Technical specification.
  • EN 4385 - Organisation of aerospace non‑metallic materials standards (links between standard types).
  • TR 7000‑7 - Rules for drafting/presentation of anaerobic polymerisable compound material standards.

This standard ensures consistent performance, traceability and environmental durability for aerospace threadlocking adhesives - essential for safe, long‑term fastening in aircraft systems.

Frequently Asked Questions

EN 4492:2013 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Non-metallic materials - Anaerobic polymerisable compounds - Threadlocking - Torque strength 19 Nm". This standard covers: This European Standard specifies the requirements relating to anaerobic polymerisable threadlocking compounds having a torque strength of 19 Nm for aerospace applications.

This European Standard specifies the requirements relating to anaerobic polymerisable threadlocking compounds having a torque strength of 19 Nm for aerospace applications.

EN 4492:2013 is classified under the following ICS (International Classification for Standards) categories: 49.025.50 - Adhesives. The ICS classification helps identify the subject area and facilitates finding related standards.

You can purchase EN 4492:2013 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.

Standards Content (Sample)


2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Luft- und Raumfahrt - Nichtmetallische Werkstoffe - Anaerobe polymerisierbare Klebstoffe - Schraubensicherung - Torsionsfestigkeit 19 NmSérie aérospatiale - Matériaux non-métalliques - Composé polymérisable anaérobie - Agent de freinage - Résistance au couple de torsion 19 NmAerospace series - Non-metallic materials - Anaerobic polymerisable compounds - Threadlocking - Torque strength 19 Nm49.025.50LepilaAdhesivesICS:Ta slovenski standard je istoveten z:EN 4492:2013SIST EN 4492:2014en01-februar-2014SIST EN 4492:2014SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 4492
January 2013 ICS 49.025.50 English Version
Aerospace series - Non-metallic materials - Anaerobic polymerisable compounds - Threadlocking - Torque strength 19 Nm
Série aérospatiale - Matériaux non-métalliques - Composé polymérisable anaérobie - Agent de freinage - Résistance au couple de torsion 19 Nm
Luft- und Raumfahrt - Nichtmetallische Werkstoffe - Anaerobe polymerisierbare Klebstoffe - Schraubensicherung - Torsionsfestigkeit 19 Nm This European Standard was approved by CEN on 10 November 2012.
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-CENELEC 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-CENELEC 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4492:2013: ESIST EN 4492:2014
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