SIST EN 3856:2004
(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
Overview
SIST EN 3856:2004 is a European standard specifying the characteristics of swivel nuts used for thrust wire in aerospace pipe couplings. These pipe couplings have a 60° spherical design and are manufactured from the titanium alloy TI-P64001. This standard ensures that swivel nuts meet precise dimensional, material, and quality requirements to provide reliable performance in aerospace fluid systems.
Developed by the European Association of Aerospace Manufacturers (AECMA) and endorsed by the European Committee for Standardization (CEN), SIST EN 3856:2004 is applied across member countries to unify production and quality assurance of these critical aerospace components. The document also references assembly guidelines according to TR 4052.
Key Topics
Scope and Application: Defines the use of swivel nuts for thrust wire in 60° spherical pipe couplings, specifically for aerospace applications where titanium alloy TI-P64001 is employed.
Dimensions and Tolerances: Specifies detailed configuration and size limits for swivel nuts, ensuring precise fit and function within pipe coupling assemblies. Dimensions adhere to ISO standards and apply before lubrication.
Material Requirements: Mandates the use of titanium alloy TI-P64001, known for its strength, light weight, and corrosion resistance-vital for aerospace fluid systems.
Surface Coating: Establishes surface treatment requirements aligned with EN 2491, focusing on protective coatings such as molybdenum disulphide dry lubricants to enhance performance and durability.
Marking & Designation: Details marking protocols (EN 2424, style A) for traceability and part identification, critical for aerospace safety and maintenance.
Quality Assurance: Incorporates ISO and EN aerospace quality standards to ensure manufacturing consistency and reliability, including approval of manufacturers' quality systems per EN 2000.
Applications
SIST EN 3856:2004 swivel nuts are integral components within aerospace fluid and hydraulic systems. Their primary applications include:
Pipe Coupling Assemblies: Utilized in 60° spherical pipe couplings for secure and flexible joints that withstand high-pressure and vibration environments commonly encountered in aircraft.
Thrust Wire Connections: These swivel nuts enable the connection of thrust wires, which stabilize and support pipe assemblies against dynamic mechanical loads.
Aerospace Fluid Systems: Ideal for fuel, hydraulic, and pneumatic systems where corrosion resistance, lightweight construction, and high mechanical performance requirements are critical.
By following this standard, manufacturers and aerospace engineers can achieve reliable, high-performance coupling assemblies that ensure system safety and longevity.
Related Standards
SIST EN 3856:2004 complements various related aerospace standards, including:
TR 4052: Assembly recommendations for pipe couplings in titanium alloy TI-P64001.
ISO 5855-3: Defines metric threads and limit dimensions for fittings used in aerospace fluid systems.
EN 2491: Specifies surface coating methods for molybdenum disulphide dry lubricants, improving swivel nut functionality.
EN 2000: Aerospace quality assurance systems for manufacturers.
EN 2424: Aerospace product marking standards for traceability.
ISO 4156: Covers dimensions and inspection of straight cylindrical involute splines, relevant for splined connections in swivel nuts.
Together, these standards ensure a coherent framework for developing, manufacturing, and certifying aerospace fluid system components with high safety and performance benchmarks.
Keywords: SIST EN 3856:2004, aerospace pipe couplings, swivel nuts, titanium alloy TI-P64001, thrust wire, aerospace fluid systems, 60° spherical pipe coupling, aerospace standard, surface coating, aerospace quality assurance, aerospace component markings
Frequently Asked Questions
SIST EN 3856:2004 is a standard published by the Slovenian Institute for Standardization (SIST). 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
SIST EN 3856:2004 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.
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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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