SIST EN 2367:2001

Overview

SIST EN 2367:2001 is a European standard developed by CEN, titled "Aerospace series - Split pins in steel EN 2573". This standard defines the specifications for steel split pins made according to EN 2573, which are specifically passivated for aerospace applications. The standard ensures these components meet strict requirements for mechanical performance and corrosion resistance at elevated temperatures, with a maximum operating temperature of 600 °C. Split pins covered by this standard are essential fastening elements used to secure assemblies in aerospace engineering, where reliability and safety are critical.

Key Topics

• Material Specification
  The split pins must be manufactured from steel conforming to EN 2573, ensuring uniformity in chemical composition and mechanical properties suitable for aerospace use.

• Passivation Process
  Passivation treatment is required to enhance corrosion resistance, crucial for aerospace environments where exposure to moisture and temperature variations occur.

• Temperature Limitation
  SIST EN 2367:2001 specifies these split pins are fit for use up to maximum temperatures of 600 °C, ensuring dimensional stability and performance under thermal stress.

• Dimensional and Mechanical Requirements
  The standard enforces strict adherence to dimensional tolerances, tensile strength, and flexibility, guaranteeing the split pins perform reliably as locking devices in aircraft components.

• Quality Assurance
  Compliance with this standard helps manufacturers and users maintain high-quality manufacturing practices and consistent product reliability in aerospace assemblies.

Applications

• Aerospace Fastening Solutions
  EN 2367 steel split pins are primarily used in securing clevis pins, shafts, and other fasteners in aircraft assemblies. Their design ensures that joints remain secure despite vibration and mechanical stress conditions common in aviation.

• High-Temperature Aerospace Systems
  Due to their ability to withstand temperatures up to 600 °C, these split pins are suitable for components exposed to engine environments, exhaust systems, and other areas experiencing elevated heat.

• Safety-Critical Mechanical Assemblies
  The pins are widely applied in mechanical systems where safety is paramount, such as landing gear, flight control mechanisms, and structural attachments in aerospace vehicles.

Related Standards

• EN 2573
  Defines the steel material requirements for the split pins covered under EN 2367.

• Other Aerospace Fastening Standards
  CEN issues several standards related to aerospace fasteners, including those for bolts, nuts, and washers, that complement the use of EN 2367 split pins.

• Corrosion Protection Standards
  Relevant standards addressing passivation and protective coatings ensure compatibility with EN 2367 requirements for corrosion resistance.

Practical Value

Adoption of SIST EN 2367:2001 ensures aerospace manufacturers and maintenance providers use split pins that meet stringent performance criteria, significantly reducing the risk of fastening failures. This standard offers a trusted reference for designing, selecting, and verifying split pins intended for critical aerospace applications where mechanical integrity and temperature resilience are mandatory.

By adhering to EN 2367, companies can improve product safety, maintain regulatory compliance, and enhance overall reliability of aerospace hardware.