SIST EN 3902:2017
(Main)Aerospace series - Washers for rivet assemblies, in aluminium alloy, anodized, metric series
Aerospace series - Washers for rivet assemblies, in aluminium alloy, anodized, metric series
This standard specifies the characteristics of washers for rivet assemblies, in aluminium alloy, anodized, metric series, for maximum operating temperature 120 °C, for aerospace applications.
Luft- und Raumfahrt - Scheiben für Nietverbindungen, aus Aluminiumlegierung, anodisiert, metrische Reihe
Série aérospatiale - Rondelles pour assemblages par rivets, en alliage d'aluminium, anodisées, série métrique
Aeronavtika - Podložke za zakovice iz aluminijeve litine, anodizirane, v metrskih merah
Ta standard določa lastnosti podložk za zakovice iz aluminijeve litine, anodiziranih, v metrskih merah, za najvišjo delovno temperaturo 120 °C v aeronavtiki.
General Information
Overview
SIST EN 3902:2017 is a European standard developed by the Aerospace and Defence Industries Association of Europe (ASD-STAN) and adopted by CEN. It specifies the characteristics and requirements of washers for rivet assemblies used in aerospace applications. These washers are made from anodized aluminium alloy and are designed according to metric series dimensions. The standard ensures washers can perform reliably under a maximum operating temperature of 120 °C, suitable for the demanding environments found in aerospace engineering.
This standard covers dimensions, materials, surface treatments, marking, and quality assurance to guarantee consistency and compatibility in aircraft manufacturing and maintenance.
Key Topics
Scope and Application
SIST EN 3902:2017 applies to aluminium alloy washers that are anodized and used in conjunction with rivet assemblies in aerospace structures. It specifies washers manufactured to metric sizes and intended for maximum temperatures of 120 °C, which supports structural integrity and durability requirements.Material Specifications
Washers must be produced from aluminium alloys compliant with EN 2090, EN 2091, EN 2320, or EN 2321 standards. These alloys ensure strength, lightweight properties, and resistance to corrosion.Surface Treatment
The standard mandates anodizing in accordance with EN 2284B for enhanced surface protection, wear resistance, and corrosion control, critical for aerospace durability.Dimensions and Tolerances
The washers’ dimensions, including outer and inner diameters, thickness, and mass, are precisely defined with tolerances measured in millimeters. Standard sizes range from 1.6 mm to 8 mm rivet diameter compatibility, ensuring suitable fit for various aerospace rivet assemblies.Marking and Identification
Washers should be marked following EN 2424 style G to facilitate traceability and compliance verification throughout manufacturing and service life.Quality Assurance
Compliance with EN 9100, the quality management standard for aviation, space, and defence organizations, is required to assure product reliability and manufacturing consistency.
Applications
EN 3902 washers are critical components in aerospace rivet assemblies, impacting:
Aircraft Structural Integrity
They provide load distribution and prevent damage to the riveted assembly, maintaining structural resilience during operation.Corrosion and Wear Protection
Anodizing significantly extends service life by reducing corrosion risk, especially important in harsh aerospace environments, including exposure to moisture and varying temperatures.Maintenance and Repair
Standardized washers enable efficient replacements during aircraft inspections and repairs, facilitating quality assurance in maintenance practices.Lightweight Assembly
Aluminium alloy washers help reduce overall weight while maintaining strength, a vital factor in aerospace for fuel efficiency and performance.
Related Standards
EN 2090, EN 2091, EN 2320, EN 2321 – Define the aluminium alloys used for precision aerospace components.
EN 2284 – Covers the sulphuric acid anodizing process for aluminium alloys referenced for surface treatment of washers.
EN 2424 – Specifies marking requirements for aerospace products ensuring traceability.
EN 9100 – Provides quality management system requirements specific to aviation, space, and defence sectors, supporting consistent manufacturing quality.
Keywords: SIST EN 3902:2017, aerospace washers, rivet assemblies, aluminium alloy washers, anodized washers, metric series washers, aerospace fasteners, EN 2284 anodizing, EN 9100 quality assurance, aerospace standard washers, aircraft rivet washers, rivet washer dimensions, aerospace component standards.
Frequently Asked Questions
SIST EN 3902:2017 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Washers for rivet assemblies, in aluminium alloy, anodized, metric series". This standard covers: This standard specifies the characteristics of washers for rivet assemblies, in aluminium alloy, anodized, metric series, for maximum operating temperature 120 °C, for aerospace applications.
This standard specifies the characteristics of washers for rivet assemblies, in aluminium alloy, anodized, metric series, for maximum operating temperature 120 °C, for aerospace applications.
SIST EN 3902:2017 is classified under the following ICS (International Classification for Standards) categories: 49.025.20 - Aluminium; 49.030.50 - Washers and other locking elements. The ICS classification helps identify the subject area and facilitates finding related standards.
You can purchase SIST EN 3902:2017 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 SIST standards.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aeronavtika - Podložke za zakovice iz aluminijeve litine, anodizirane, v metrskih merahAerospace series - Washers for rivet assemblies, in aluminium alloy, anodized, metric series49.030.50Podložke in drugi blokirni elementiWashers and other locking elements49.025.20AluminijAluminiumICS:Ta slovenski standard je istoveten z:EN 3902:2016SIST EN 3902:2017en,fr,de01-marec-2017SIST EN 3902:2017SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 3902
December
t r s x ICS
v {ä r u rä w r English Version
Aerospace series æ Washers for rivet assembliesá in aluminium alloyá anodizedá metric series Série aérospatiale æ Rondelles pour assemblages par rivetsá en alliage d 5aluminiumá anodiséesá série métrique
Luftæ und Raumfahrt æ Scheiben für Nietverbindungená aus Aluminiumlegierungá anodisiertá metrische ReiheThis European Standard was approved by CEN on
s t March
t r s xä
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 Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey andUnited Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels
t r s x CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
u { r tã t r s x ESIST EN 3902:2017
Page European foreword . 3 1 Scope . 4 2 Normative references . 4 3 Required characteristics . 4 4 Designation . 6 5 Marking . 6 6 Quality assurance . 6
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...