Aerospace series - Washers, flat, large diameter, in aluminium alloy, anodized or chromated

This standard specifies the characteristics of flat washers, large diameter, in aluminium alloy, anodized or chromated, for maximum operating temperature 120 °C, for aerospace applications.

Luft- und Raumfahrt - Scheiben, flach, großer Außendurchmesser, aus Aluminiumlegierung, anodisiert oder chromatiert

Diese Norm legt die Eigenschaften von flachen Scheiben mit großem Außendurchmesser, aus Aluminiumlegierung, anodisiert oder chromatiert, für Einsatztemperaturen bis 120 °C, für die Anwendung in der Luft- und Raumfahrt fest.

Série aérospatiale - Rondelles plates larges, en alliage d'aluminium, anodisées ou chromatées

La présente norme spécifie les caractéristiques des rondelles plates larges, en alliage d'aluminium, anodisées ou chromatées, pour température maximale d'utilisation 120 °C, pour applications aérospatiales.

Aerospace series - Washers, flat, large diameter, in aluminium alloy, anodized or chromated

General Information

Status
Published
Publication Date
19-Mar-1996
Withdrawal Date
29-Sep-1996
ICS
49.030.99 - Other fasteners
Technical Committee
ASD-STAN - Aerospace
Drafting Committee
ASD-STAN/D 3 - Mechanical
Current Stage
9093 - Decision to confirm - Review Enquiry
Start Date
31-May-2017
Completion Date
14-Apr-2025
Ref Project
SIST EN 2912:2001 - Aerospace series - Washers, flat, large diameter, in aluminium alloy, anodized or chromated

Overview

EN 2912:1996 specifies the characteristics of flat, large-diameter washers made from aluminium alloy, with anodized or chromated surface treatments for aerospace applications. The standard defines these washers for a maximum operating temperature of 120 °C and targets use in aircraft and aerospace assemblies where weight, corrosion resistance and repeatable fit are critical.

This standard is adopted by CEN and appears identically as SIST EN 2912:2001 in the Slovenian national catalogue. It is classified under washer and aluminium product ICS headings relevant to fastener elements and aluminium materials.

Key Topics

  • Scope and applicability: Defines the general characteristics and intended use of large-diameter flat aluminium washers for aerospace service up to 120 °C.
  • Material and treatment: Specifies aluminium alloy washers with authorized surface finishes - anodizing or chromating - to improve corrosion resistance and surface properties.
  • Performance emphasis: Focus on consistent fit, dimensional stability at service temperature, and compatibility with aerospace fastening systems.
  • Quality and conformity: Implies requirements for manufacturing controls and conformity assessment to ensure washers meet aerospace quality expectations.

Applications

EN 2912:1996 is intended for designers, purchasers, and manufacturers involved in aerospace fastening and structural assemblies. Typical practical applications include:

  • Use as bearing and load-distribution elements under fasteners in airframe structures.
  • Installation in lightweight assemblies where aluminium washers reduce weight compared to steel counterparts.
  • Situations requiring improved corrosion resistance from anodized or chromated surfaces, such as external panels, nacelles and equipment mounts operating below 120 °C.
  • Replacement and maintenance parts where conformity to aerospace standards is required for traceability and safety.

Benefits of complying with EN 2912:1996 include predictable material behavior in service, enhanced corrosion protection from approved surface finishes, and improved interchangeability in aerospace supply chains.

Related Standards

  • SIST EN 2912:2001 - national adoption of EN 2912:1996 (identical text).
  • Other CEN/ISO standards for fasteners, washers and aluminium alloys (refer to applicable CEN and ISO documents for complementary specifications and testing methods).

By referencing EN 2912:1996, engineers and procurement teams ensure that large-diameter aluminium flat washers meet recognized aerospace expectations for surface treatment, temperature rating and functional performance.

Frequently Asked Questions

EN 2912:1996 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Washers, flat, large diameter, in aluminium alloy, anodized or chromated". This standard covers: This standard specifies the characteristics of flat washers, large diameter, in aluminium alloy, anodized or chromated, for maximum operating temperature 120 °C, for aerospace applications.

This standard specifies the characteristics of flat washers, large diameter, in aluminium alloy, anodized or chromated, for maximum operating temperature 120 °C, for aerospace applications.

EN 2912:1996 is classified under the following ICS (International Classification for Standards) categories: 49.030.99 - Other fasteners. The ICS classification helps identify the subject area and facilitates finding related standards.

EN 2912:1996 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 - Washers, flat, large diameter, in aluminium alloy, anodized or chromatedLuft- und Raumfahrt - Scheiben, flach, großer Außendurchmesser, aus Aluminiumlegierung, anodisiert oder chromatiertSérie aérospatiale - Rondelles plates larges, en alliage d'aluminium, anodisées ou chromatéesAerospace series
...

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...