Aerospace series - Washers, tab, in heat resisting steel, passivated

This standard specifies the characteristics of tab washers, in heat resisting steel, passivated, for maximum operating temperature 650°C, for aerospace applications. Their use under hexagon head bolts is conditional upon the user accepting the possibility of some interference.

Luft- und Raumfahrt - Sicherungsbleche mit Lappen, aus hochwarmfestem Stahl, passiviert

Diese Norm legt die Eigenschaften von Sicherungsblechen mit Lappen, aus hochwarmfestem Stahl, passiviert, für Einsatztemperaturen bis 650°C, für die Anwendung in der Luft- und Raumfahrt fest. Ihre Verwendung unter Sechskantschraubköpfen hängt davon ab, daß der Anwender eine mögliche Überdeckung akzeptiert.

Série aérospatiale - Freins d'écrous, en acier résistant a chaud, passivés

La présente norme spécifie les caractéristiques des freins d'écrous, en acier résistant à chaud, passivés, pour température maximale d'utilisation 650°C, pour applications aérospatiales. Leur emploi sous tête des vis hexagonales est conditionné par l'acceptation, par l'utilisateur, d'une interférence éventuelle.

Aerospace series - Washers, tab, in heat resisting steel, passivated

General Information

Status
Published
Publication Date
31-Dec-2000
ICS
49.030.50 - Washers and other locking elements
Technical Committee
SS SPL - Technical Board for the general field
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Jan-2001
Due Date
01-Jan-2001
Completion Date
01-Jan-2001
Ref Project
EN 2948:1996 - Aerospace series - Washers, tab, in heat resisting steel, passivated

Relations

Revised
oSIST prEN 2948:2026 - Aerospace series - Washers, tab, in heat resisting steel, passivated
Effective Date
23-Jul-2025

Overview

SIST EN 2948:2001 is a European standard published by CEN that defines the specifications for tab washers made of heat-resisting steel, which are passivated for corrosion resistance. These washers are designed specifically for aerospace applications requiring durability and performance at elevated temperatures up to 650°C. The standard ensures that these washers meet stringent quality and safety requirements necessary for use in demanding aerospace environments.

Key Topics

  • Material Specification: The washers must be manufactured from heat resisting steel, capable of withstanding maximum operating temperatures of 650°C, ensuring high thermal stability.
  • Passivation Process: The steel washers are passivated to enhance corrosion resistance, extending service life under harsh aerospace conditions.
  • Tab Washer Design: Includes the defining characteristics for tab washers, which incorporate locking tabs to prevent loosening in vibration-intensive aerospace assemblies.
  • Usage Conditions: The standard notes that using these washers under hexagon head bolts may cause some interference, which must be accepted by the user. This highlights the need for awareness of installation considerations.
  • Aerospace Quality Requirements: Emphasizes high reliability and repeatability in manufacturing processes aligned with aerospace industry standards.

Applications

SIST EN 2948:2001 tab washers are primarily used in aerospace engineering where components are exposed to high temperatures and mechanical stresses. Typical applications include:

  • Securing fasteners in aircraft engines and exhaust systems that operate under extreme thermal conditions.
  • Locking washers in airframe assemblies where vibration resistance is critical.
  • Components in aerospace structures that require long-term resistance to oxidation and corrosion at elevated temperatures.
  • Situations where preventing fastener rotation is crucial for maintaining assembly integrity and flight safety.

These washers play a vital role in maintaining the mechanical security of fastened joints in aerospace equipment by effectively resisting loosening and degradation over time.

Related Standards

For comprehensive aerospace fastener and locking element compliance, SIST EN 2948:2001 aligns with and complements other relevant standards, such as:

  • EN 16788 - Aerospace series - Lock washers and locking devices for use with nuts and bolts.
  • EN 2002 - Aerospace series - Mechanical fasteners general technical specification.
  • ISO 9227 - Corrosion tests in artificial atmospheres - Salt spray tests, relevant to evaluating passivation performance.
  • EN 10204 - Metallic products - Types of inspection documents, often required for aerospace quality assurance.

Adhering to SIST EN 2948:2001 ensures compatibility and interoperability with these standards, enabling aerospace manufacturers and suppliers to meet strict international quality and safety regulations.

Keywords: SIST EN 2948:2001, aerospace washers, tab washers, heat resisting steel washers, passivated washers, high-temperature washers, aerospace fasteners, anti-loosening washers, corrosion resistant aerospace components, thermal stability washers, aerospace locking washers, CEN standards, aerospace engineering standards

Frequently Asked Questions

SIST EN 2948:2001 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Washers, tab, in heat resisting steel, passivated". This standard covers: This standard specifies the characteristics of tab washers, in heat resisting steel, passivated, for maximum operating temperature 650°C, for aerospace applications. Their use under hexagon head bolts is conditional upon the user accepting the possibility of some interference.

This standard specifies the characteristics of tab washers, in heat resisting steel, passivated, for maximum operating temperature 650°C, for aerospace applications. Their use under hexagon head bolts is conditional upon the user accepting the possibility of some interference.

SIST EN 2948:2001 is classified under the following ICS (International Classification for Standards) categories: 49.030.50 - Washers and other locking elements. The ICS classification helps identify the subject area and facilitates finding related standards.

SIST EN 2948:2001 has the following relationships with other standards: It is inter standard links to oSIST prEN 2948:2026. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

SIST EN 2948:2001 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, tab, in heat resisting steel, passivatedLuft- und Raumfahrt - Sicherungsbleche mit Lappen, aus hochwarmfestem Stahl, passiviertSérie aérospatiale - Freins d'écrous, en acier résistant a chaud, passivésAerospace series - Washers,
...

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