EN 3856:2002
(Main)Aerospace series - Pipe couplings, 60°, spherical, in titanium alloy TI-P64001 - Swivel nuts for thrust wire
Aerospace series - Pipe couplings, 60°, spherical, in titanium alloy TI-P64001 - Swivel nuts for thrust wire
This standard specifies the characteristics of swivel nuts for thrust wire for pipe couplings, 60°, spherical, in TI-P64001, for aerospace applications.
NOTE Assembly in accordance with TR 4052
Luft- und Raumfahrt - Rohrverschraubungen mit Kugelbuchsen, 60 ° , aus Titanlegierung TI-P64001 - Überwurfmuttern für Schubdrähte
Diese Norm legt die Eigenschaften von Überwurfmuttern für Schubdrähte für Rohrverschraubungen 60° mit Kugelbuchsen, aus TI P64001, für Anwendungen in der Luft- und Raumfahrt fest.
ANMERKUNG Montage nach TR 4052.
Aerospace series - Pipe couplings, 60°, spherical, in titanium alloy TI-P64001 - Swivel nuts for thrust wire
General Information
- Status
- Published
- Publication Date
- 12-Nov-2002
- Withdrawal Date
- 30-May-2003
- 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
- 11-Feb-2026
Relations
- Effective Date
- 09-Feb-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Refers
prEN 415-2 - Packaging machines safety - Part 2: Pre-formed rigid container packaging machines - 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
EN 3856:2002 is a European standard developed by CEN, specifically for the aerospace sector. It outlines the requirements for swivel nuts designed for thrust wire in 60° spherical pipe couplings made from titanium alloy TI-P64001. These precision components are integral to fluid system assemblies in aircraft and other aerospace vehicles, providing robust and reliable connections. The standard covers critical aspects such as configuration, dimensions, material, and surface treatments, ensuring high-quality and seamless integration within aerospace fluid systems.
Key Topics
Scope and Purpose
EN 3856:2002 details the characteristics of swivel nuts to be used in combination with 60° spherical pipe couplings, specifically manufactured from titanium alloy TI-P64001. The document establishes minimum requirements for product configuration, dimensional tolerances, and performance.Material Specifications
The swivel nuts defined in this standard are produced from titanium alloy TI-P64001, chosen for its strength-to-weight ratio, corrosion resistance, and suitability in demanding aerospace environments.Design and Tolerances
- Specific dimensions and tolerances (referenced to ISO 286-2 for limits and fits)
- MJ thread dimensions in accordance with ISO 5855-3
- Spline requirements as per ISO 4156
- Removal of sharp edges and chamfers to enhance safety and fit
Surface Treatment
Surface coatings as referenced in EN 2491 (molybdenum disulphide dry lubricants) help reduce wear and facilitate assembly.Marking and Identification
Swivel nuts must be marked clearly according to EN 2424 standards, providing traceability and compliance with aerospace product identification requirements.Quality Assurance
Manufacturers must have a certified quality management system according to EN 2000, guaranteeing product consistency and reliability for aerospace applications.
Applications
Swivel nuts for thrust wire according to EN 3856:2002 are primarily used in:
Aerospace Fluid Systems
These components ensure leak-tight, high-strength connections in hydraulic and fuel systems, which are critical for flight safety and system performance.Aircraft Manufacturing and Maintenance
Used by aircraft manufacturers and maintenance, repair, and overhaul (MRO) organizations to maintain and assemble fluid systems with certified, reliable coupling components.Other High-Performance Engineering Sectors
Given the stringent quality requirements, the standard may also be referenced for pipe coupling assemblies in defense and advanced engineering applications where similar reliability is vital.
Assembly procedures should adhere to the recommendations in TR 4052 to ensure optimal performance and safety.
Related Standards
Several international and European standards are referenced by EN 3856:2002 to ensure compatibility and coherence in aerospace manufacturing:
- ISO 286-2: ISO system of limits and fits - Standard tolerance grades and limit deviations
- ISO 4156: Straight cylindrical involute splines - Metric module, side fit
- ISO 5855-3: Aerospace MJ threads - Limit dimensions for fluid system fittings
- EN 2000: Aerospace series quality assurance criteria
- EN 2424: Marking requirements for aerospace products
- EN 2491: Surface coating methods for aerospace components (molybdenum disulphide dry lubricants)
- EN 2530: Titanium alloy specifications
- TR 4052: Technical report offering assembly recommendations for spherical pipe couplings in titanium alloys
EN 3856:2002 forms a key part of the aerospace component standards framework, helping manufacturers, suppliers, and maintenance providers achieve high levels of safety, compatibility, and product performance in critical aerospace applications.
For optimal results in aerospace pipe coupling assemblies, ensure that all related standards are appropriately followed, and source components from accredited suppliers.
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Frequently Asked Questions
EN 3856:2002 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Pipe couplings, 60°, spherical, in titanium alloy TI-P64001 - Swivel nuts for thrust wire". This standard covers: This standard specifies the characteristics of swivel nuts for thrust wire for pipe couplings, 60°, spherical, in TI-P64001, for aerospace applications. NOTE Assembly in accordance with TR 4052
This standard specifies the characteristics of swivel nuts for thrust wire for pipe couplings, 60°, spherical, in TI-P64001, for aerospace applications. NOTE Assembly in accordance with TR 4052
EN 3856:2002 is classified under the following ICS (International Classification for Standards) categories: 49.080 - Aerospace fluid systems and components. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 3856:2002 has the following relationships with other standards: It is inter standard links to ISO 4156:1981, EN 9100:2018, EN 1715-1:1997, EN 2491:2011, prEN 415-2, EN 2424:2008, EN 9133:2018, EN ISO 14577-2:2002, EN ISO 7500-1:2004, EN 3858:2002, EN ISO 14577-3:2002. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 3856:2002 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.Aerospace series - Pipe couplings, 60°, spherical, in titanium alloy TI-P64001 - Swivel nuts for thrust wireLuft- und Raumfahrt - Rohrverschraubungen mit Kugelbuchsen, 60 ° , aus Titanlegierung TI-P64001 - Überwurfmuttern für SchubdrähteAerospace series - Pipe couplings, 60°, spherical, in titanium alloy TI-P64001 - Swivel nuts for thrust wire49.080Aerospace fluid systems and componentsICS:Ta slovenski standard je istoveten z:EN 3856:2002SIST EN 3856:2004en01-maj-2004SIST EN 3856:2004SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 3856November 2002ICS 49.080English versionAerospace series - Pipe couplings, 60°, spherical, in titaniumalloy TI-P64001 - Swivel nuts for thrust wireSérie aérospatiale - Raccords sphériques, 60°, en alliagede titane TI-P64001 - Ecrous prisonniers à joncThis European Standard was approved by CEN on 30 August 2002.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 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 Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2002 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 3856:2002 ESIST EN 3856:2004
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