EN 4323:2004
(Main)Aerospace series - Screws, 100° countersunk head, six lobe recess, threaded to head, in titanium alloy TI-P64001, anodized, MoS2 coated - Classification: 900 MPa (at ambient temperature) / 350 °C
Aerospace series - Screws, 100° countersunk head, six lobe recess, threaded to head, in titanium alloy TI-P64001, anodized, MoS2 coated - Classification: 900 MPa (at ambient temperature) / 350 °C
This standard specifies the characteristics of screws with 100° countersunk head with six lobe recess, threaded to head, in TI-P64001, anodized, MoS2 coated, for aerospace applications.
Classification: 900 MPa ) / 350 °C )
Luft- und Raumfahrt - 100° -Senkschrauben, Sechs-Bogenzahn, Gewinde bis Kopf, aus Titanlegierung TI-P64001, anodisiert, MoS2-beschichtet - Klasse: 900 MPa (bei Raumtemperatur)/350 °C
Diese Norm legt die Eigenschaften von Schrauben mit 100° Senkkopf, Sechs Bogenzahn-Innenantrieb und Gewinde bis Kopf, aus TI P64001, anodisiert, MoS2-beschichtet, für Anwendungen in der Luft- und Raumfahrt fest.
Klasse: 900 MPa )/350 °C )
Série aérospatiale - Vis à tête fraisée 100°, à empreinte six lobes, filetées sous tête, en alliage de titane TI-P64001, anodisées, revêtues MoS2 - Classification : 900 MPa (à température ambiante) / 350 °C
Aerospace series - Screws, 100° countersunk head, six lobe recess, threaded to head, in titanium alloy TI-P64001, anodized, MoS2 coated - Classification: 900 MPa (at ambient temperature) / 350 °C
General Information
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Overview
EN 4323:2004 is a European standard established by CEN that defines the specifications for aerospace-grade screws made from titanium alloy TI-P64001. These screws feature a 100° countersunk head with a six-lobe recess and are threaded up to the head. They are anodized and coated with molybdenum disulphide (MoS2) to enhance performance, especially in aerospace applications. The screws are classified for strength at 900 MPa under ambient temperature conditions and are tested for performance up to 350 °C, ensuring reliability in critical aerospace environments.
This standard is vital for manufacturers and engineers designing or producing fastening components that require high strength, lightweight, and corrosion-resistant materials suited for aerospace engineering.
Key Topics
Screw Configuration and Dimensions
EN 4323:2004 details geometric characteristics including precise dimensions, tolerances, and mass specific to screws with a 100° countersunk head and six-lobe recess. Dimensions are given in millimeters, measured after anodizing but prior to MoS2 coating.Material Specifications
Screws must be made from titanium alloy TI-P64001 according to EN 3813. This alloy provides an excellent balance of strength and weight, essential for aerospace component durability and performance.Surface Treatment
The screws undergo anodizing followed by MoS2 dry lubricant coating (as per EN 2491). This dual treatment improves corrosion resistance and reduces friction during installation and operation.Mechanical Classification
The screws are classified at 900 MPa tensile strength at ambient temperature with an operational temperature limit of 350 °C, aligning with aerospace standards for strength and thermal resistance.Threading and Recess Standards
Threads conform to aerospace-specific ISO standards (ISO 3353-1 and ISO 5855-2) with six-lobe recess geometry following EN 3911, ensuring compatibility and high torque transfer.Marking and Identification
Marking conventions from EN 2424 are used to ensure traceability and compliance with aerospace industry quality control.
Applications
EN 4323:2004 screws are specifically engineered for the aerospace sector where high strength-to-weight ratio fasteners are critical. Their key applications include:
- Aircraft Assembly: Used extensively in airframe structures requiring lightweight yet strong fastening.
- Engine Components: Their high-temperature tolerance up to 350 °C suits fasteners in areas exposed to elevated heat.
- Spacecraft Manufacturing: The corrosion resistance and fatigue strength make these screws ideal for space vehicles and satellite assembly.
- Maintenance and Repair: Standardized screws simplify replacement and maintenance processes in aerospace manufacturing lines and field servicing.
The anodized titanium with MoS2 coating ensures optimal durability under harsh aerospace environmental conditions, such as vibration, thermal cycling, and exposure to corrosive elements.
Related Standards
EN 4323:2004 references several vital aerospace and fastener standards to maintain coherence within the industry:
- ISO 3353-1: Aerospace lead and runout rolled threads.
- ISO 5855-2: Limits for aerospace bolts and nuts.
- EN 2424: Aerospace marking of products.
- EN 2491: MoS2 dry lubricants and coating application methods.
- EN 3813: Specifications for titanium alloy TI-P64001 for forged fasteners.
- EN 3818 & EN 3905: Technical specifications for bolts and six-lobe recess design.
Compliance with these related standards guarantees that fasteners meeting EN 4323 are compatible with global aerospace manufacturing practices and quality systems.
Keywords: aerospace screws, titanium alloy screws, countersunk head screws, six-lobe recess, MoS2 coating, EN 4323, aerospace fasteners, titanium TI-P64001, anodized titanium screws, aerospace bolt standards, high-strength aerospace screws, aerospace component fasteners, 900 MPa aerospace screws, aerospace screw standard, fasteners for aerospace applications.
Frequently Asked Questions
EN 4323:2004 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Screws, 100° countersunk head, six lobe recess, threaded to head, in titanium alloy TI-P64001, anodized, MoS2 coated - Classification: 900 MPa (at ambient temperature) / 350 °C". This standard covers: This standard specifies the characteristics of screws with 100° countersunk head with six lobe recess, threaded to head, in TI-P64001, anodized, MoS2 coated, for aerospace applications. Classification: 900 MPa ) / 350 °C )
This standard specifies the characteristics of screws with 100° countersunk head with six lobe recess, threaded to head, in TI-P64001, anodized, MoS2 coated, for aerospace applications. Classification: 900 MPa ) / 350 °C )
EN 4323:2004 is classified under the following ICS (International Classification for Standards) categories: 49.030.20 - Bolts, screws, studs. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 4323:2004 has the following relationships with other standards: It is inter standard links to EN 4323:2003. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase EN 4323:2004 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)
SLOVENSKI STANDARD
01-junij-2005
1DGRPHãþD
SIST EN 4323:2004
Aerospace series - Screws, 100° countersunk head, six lobe recess, threaded to
head, in titanium alloy TI-P64001, anodized, MoS2 coated - Classification: 900 MPa
(at ambient temperature) / 350 °C
Aerospace series - Screws, 100° countersunk head, six lobe recess, threaded to head, in
titanium alloy TI-P64001, anodized, MoS2 coated - Classification: 900 MPa (at ambient
temperature) / 350 °C
Luft- und Raumfahrt - 100° -Senkschrauben, Sechs-Bogenzahn, Gewinde bis Kopf, aus
Titanlegierung TI-P64001, anodisiert, MoS2-beschichtet - Klasse: 900 MPa (bei
Raumtemperatur)/350 °C
Série aérospatiale - Vis a tete fraisée 100°, a empreinte six lobes, filetées sous tete, en
alliage de titane TI-P64001, anodisées, revetues MoS2 - Classification : 900 MPa (a
température ambiante) / 350 °C
Ta slovenski standard je istoveten z: EN 4323:2004
ICS:
49.030.20 Sorniki, vijaki, stebelni vijaki Bolts, screws, studs
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 4323
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2004
ICS 49.030.20 Supersedes EN 4323:2003
English version
Aerospace series - Screws, 100° countersunk head, six lobe
recess, threaded to head, in titanium alloy TI-P64001, anodized,
MoS2 coated - Classification: 900 MPa (at ambient temperature)
/ 350° C
Série aérospatiale - Vis à tête fraisée 100° , à empreinte Luft- und Raumfahrt – 100° Senkschrauben, Sechs-
six lobes, filetées sous tête, en alliage de titane TI-P64001, Bogenzahn, Gewinde bis Kopf, aus Titanlegierung TI-
anodisées, revêtues MoS2 - Classification : 900 MPa (à P64001, anodisiert, MoS2 beschichtet - Klasse: 900 MPa
température ambiante) / 350° C (bei Raumtemperatur) / 350° C
This European Standard was approved by CEN on 11 September 2003.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4323:2004: E
worldwide for CEN national Members.
Contents Page
Foreword.3
1 Scope .4
2 Normative references .4
3 Required characteristics.4
3.1 Configuration – Dimensions – Tolerances – Masses .4
3.2 Materials .4
3.3 Surface treatment .4
4 Designation .7
5 Marking .7
6 Technical specifications .7
Foreword
This document (EN 4323:2004) has been prepared by the European Association of Aerospace
Manufacturers - Standardization (AECMA-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
AECMA, prior to its presentation to CEN.
This European Standard shall be given the status of a national standard, either by publication of an
...
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