SIST EN 3264:2018

Aerospace series - Pipe coupling 8°30' in titanium alloy - Thrust wire nuts

This document specifies the characteristics of thrust wire nuts for pipe couplings 8°30', in titanium alloy, for aerospace applications.
Nominal pressure: up to 28 000 kPa.
Temperature range: −55 °C to 135 °C.

Luft- und Raumfahrt - Rohrverschraubung 8°30' aus Titanlegierung - Muttern mit Schubdraht

Diese Europäische Norm legt die Eigenschaften von Muttern mit Schubdraht für Rohrverschraubungen 8°30', aus Titanlegierung, zur Verwendung in der Luft- und Raumfahrt fest.
Nenndruck: bis 28 000 kPa.
Temperaturbereich: −55 °C bis 135 °C.

Série aérospatiale - Système de raccordement 8°30' en alliage de titane - Écrous à jonc

Cette Norme européenne spécifie les caractéristiques requises des écrous à jonc pour les systèmes de raccordement 8°30', en alliage de titane, pour applications aérospatiales.
Pression nominale : jusqu'à 28 000 kPa
Plage de températures : – 55 °C à 135 °C

Aeronavtika - Cevni priključek 8°30' iz titanove zlitine - Matice s potisno žico

Ta dokument določa lastnosti matic s potisno žico za cevne priključke 8°30’ iz titanove
zlitine za uporabo v aeronavtiki.
Nazivni tlak: do 28.000 kPa.
Temperaturno območje: od −55 °C do 135 °C

General Information

• Status: Published
• Publication Date: 03-Sep-2018
• ICS: 49.025.30 - Titanium
• ICS: 49.030.30 - Nuts
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 02-Jul-2018
• Due Date: 06-Sep-2018
• Completion Date: 04-Sep-2018
• Ref Project: EN 3264:2018 - Aerospace series - Pipe coupling 8°30' in titanium alloy - Thrust wire nuts

Relations

• Replaces: SIST EN 3264:2010 - Aerospace series - Pipe coupling 8°30' in titanium alloy - Thrust wire nuts
• Effective Date: 27-Jun-2018
• Refers: SIST EN 3275:2019 - Aerospace series - Pipe coupling 8°30' up to 28 000 kPa Dynamic beam seal - Metric series - Technical specification
• Effective Date: 28-Jan-2026
• Refers: SIST EN 3311:2024 - Aerospace series - Titanium alloy TI-P64001 (Ti-6Al-4V) - Annealed - Bars for machining - D ≤ 300 mm - 900 MPa ≤ Rm ≤ 1 160 MPa
• Effective Date: 28-Jan-2026
• Refers: SIST EN 9133:2018 - Aerospace series - Quality Management Systems - Qualification Procedure for Aerospace Standard Products
• Effective Date: 28-Jan-2026
• Refers: oSIST prEN 415-2:2022 - Safety of packaging machines - Part 2: Packaging machines for pre-formed rigid containers
• Effective Date: 28-Jan-2026
• Refers: SIST EN ISO 286-2:2010 - Geometrical product specifications (GPS) - ISO code system for tolerances on linear sizes - Part 2: Tables of standard tolerance classes and limit deviations for holes and shafts (ISO 286-2:2010)
• Effective Date: 28-Jan-2026
• Refers: SIST EN 2491:2011 - Aerospace series - Molybdenum disulphide dry lubricants - Coating methods
• Effective Date: 28-Jan-2026
• Refers: SIST EN 4032:2002 - Aerospace series - Pipe coupling 8°30' in titanium alloy - Thrust wire
• Effective Date: 28-Jan-2026
• Refers: SIST EN 2424:2008 - Aerospace series - Marking of aerospace products
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4018:2009 - Aerospace series - Pipe coupling 8°30' in titanium alloy - Elbows 90° with thrust wire nut
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4190:2004 - Aerospace series - Pipe coupling 8°30' in titanium alloy - Tees, reduced with thrust wire nut on run
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4027:2002 - Aerospace series - Pipe coupling 8°30' in titanium alloy - Tees branch with thrust wire nut
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4028:2004 - Aerospace series - Pipe coupling 8°30' in titanium alloy - Tees with thrust wire nut on run
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4024:2009 - Aerospace series - Pipe coupling 8°30' in titanium alloy - Elbows 45° welded end with thrust wire nut
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4610:2006 - Aerospace series - Pipe coupling 8° 30' in titanium alloy - Elbows 45°, with thrust wire nut
• Effective Date: 28-Jan-2026

Overview

SIST EN 3264:2018 is a European standard developed by CEN, focusing on the requirements for thrust wire nuts used in pipe couplings with an 8°30' angle. These nuts are produced from titanium alloys, addressing the need for robust connections within aerospace fluid systems. The standard specifies characteristics such as dimensions, materials, marking, and performance, ensuring reliability under demanding conditions-including pressures up to 28,000 kPa and operational temperatures ranging from −55 °C to 135 °C. SIST EN 3264:2018 is essential for manufacturers and suppliers aiming to meet European and international aerospace quality benchmarks.

Key Topics

• Scope and Applicability

  • Defines thrust wire nut types for 8°30' pipe couplings
  • Focused on aerospace use, covering pressure and temperature ranges

• Materials and Surface Treatment

  • Specifies titanium alloys for high strength-to-weight ratio and corrosion resistance
  • Outlines requirements for surface treatments, including lubrication and abrasive blasting

• Dimensional and Physical Characteristics

  • Standardizes threads and dimensions to promote interchangeability and compatibility
  • Specifies surface roughness and allowable tolerances for aerospace-grade performance

• Marking and Identification

  • Details marking requirements as per EN 2424 to ensure component traceability

• Quality Assurance

  • Conforms to qualification procedures under EN 9133
  • Integrates quality management requirements to maintain aerospace product standards

Applications

SIST EN 3264:2018 is widely adopted in the aerospace sector for:

• Aircraft Hydraulic and Fluid Systems

  • Used in high-pressure hydraulic circuits, fuel lines, and cooling systems due to the robust sealing provided by thrust wire nuts

• Aerospace Manufacturing and Maintenance

  • Ensures consistent quality of replacement and original parts for pipe couplings
  • Facilitates standardization in assembly and maintenance processes

• Design and Engineering of Fluid Transfer Components

  • Enables aerospace engineers to specify reliable connection components in new designs
  • Essential reference for suppliers and OEMs when sourcing or producing titanium thrust wire nuts

By adhering to this standard, organizations can optimize safety, reliability, and maintainability of aerospace fluid systems, supporting compliance with both European and global industry expectations.

Related Standards

To ensure comprehensive compliance and integration with aerospace systems, SIST EN 3264:2018 references several related standards, including:

• EN 2424: Aerospace product marking requirements
• EN 2491: Coating methods for dry lubricants (molybdenum disulphide)
• EN 3275: Technical specifications for metric pipe coupling with dynamic beam seals
• EN 3311 & EN 3314: Material specifications for aerospace-grade titanium alloys (Ti-6Al-4V)
• EN 4032: Thrust wire characteristics for pipe couplings
• EN 9133: Procedures for aerospace standard product qualification
• ISO 5855-3: Limit dimensions for MJ threads in aerospace fittings
• ISO 8788: Tolerances of form and position for metric nuts
• EN ISO 286-2: Standard tolerance classes and deviations for holes and shafts

By referencing these standards, SIST EN 3264:2018 ensures compatibility, performance, and safety across a wide range of aerospace fluid system applications.

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Keywords: SIST EN 3264:2018, aerospace series, thrust wire nuts, pipe coupling, titanium alloy, high pressure, CEN standard, aerospace applications, fluid systems, standardization, technical specification.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Luft- und Raumfahrt - Rohrverschraubung 8°30' aus Titanlegierung - Muttern mit SchubdrahtSérie aérospatiale - Système de raccordement 8°30' en alliage de titane - Écrous à joncAerospace series - Pipe coupling 8°30' in titanium alloy - Thrust wire nuts49.030.30MaticeNuts49.025.30TitanTitaniumICS:Ta slovenski standard je istoveten z:EN 3264:2018SIST EN 3264:2018en,fr,de01-oktober-2018SIST EN 3264:2018SLOVENSKI
STANDARDSIST EN 3264:20101DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 3264
June
t r s z ICS
v {ä r z r Supersedes EN
u t x vã t r s rEnglish Version
Aerospace series æ Pipe coupling
z ¹ u r 5 in titanium alloy æ Thrust wire nuts Série aérospatiale æ Système de raccordement
z ¹ u r 5 en alliage de titane æ Écrous à jonc
Luftæ und Raumfahrt æ Rohrverschraubung
z ¹ u r 5 aus Titanlegierung æ Muttern mit Schubdraht This European Standard was approved by CEN on
s w October
t r s yä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels
t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
u t x vã t r s z ESIST EN 3264:2018
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