18/30377533 DC

Overview

The BS EN 4496 standard outlines the specifications for aerospace screws with a 100° countersunk normal head, featuring an offset cruciform recess and a close tolerance normal shank. These screws are designed for use in critical aerospace applications where performance and reliability are paramount. The standard specifies the use of titanium alloy, anodized, with an aluminium pigmented coating, ensuring durability and resistance to environmental factors.

Key Requirements

BS EN 4496 establishes essential requirements for the manufacture and testing of these aerospace screws. Key specifications include:

• Material: Titanium alloy, which provides a high strength-to-weight ratio.
• Head Design: 100° countersunk normal head for flush mounting.
• Recess Type: Offset cruciform recess for improved torque transmission.
• Shank Tolerance: Close tolerance normal shank for precise fit.
• Thread Length: Short thread to reduce weight and improve aerodynamics.
• Coating: Anodized with aluminium pigmented coating for enhanced corrosion resistance.
• Classification: 1 100 MPa at ambient temperature, ensuring high load-bearing capacity.

Implementation Benefits

Adhering to BS EN 4496 provides numerous benefits for manufacturers and aerospace engineers:

• Enhanced Safety: Compliance with this standard ensures that screws meet rigorous safety and performance criteria, reducing the risk of failure in critical applications.
• Quality Assurance: The standard promotes consistent quality in manufacturing processes, leading to improved product reliability.
• Interoperability: Using standardised components facilitates compatibility across different aerospace systems and components.
• Market Access: Compliance with BS EN 4496 can enhance marketability, as it demonstrates adherence to recognised industry standards.

Compliance Value

Compliance with BS EN 4496 is essential for organisations involved in aerospace manufacturing and assembly. It not only ensures that products meet the necessary safety and performance standards but also aligns with regulatory requirements set forth by aviation authorities. By implementing this standard, companies can:

• Minimise Liability: Reducing the risk of product failures can significantly decrease liability exposure.
• Improve Customer Confidence: Demonstrating compliance can enhance trust among clients and stakeholders.
• Streamline Certification Processes: Adhering to established standards can simplify the certification process for new products.

In conclusion, BS EN 4496 is a critical standard for aerospace screws, ensuring that they meet the necessary specifications for safety, performance, and reliability. By following this standard, manufacturers can enhance product quality and compliance, ultimately contributing to the advancement of aerospace technology.