16/30342254 DC

Overview

The BS EN 3.3558 standard pertains to the specifications for screws used in aerospace applications. It specifically addresses 100° countersunk normal head screws featuring a Spiral Drive Recess. These screws are designed with a coarse tolerance normal shank and a medium length thread, manufactured from alloy steel and finished with cadmium plating. The classification of these screws is 1 100 MPa at ambient temperature and 235 °C, ensuring they meet the rigorous demands of aerospace environments.

Key Requirements

• Material Specification: The screws must be made from high-strength alloy steel, providing durability and resistance to deformation under load.
• Thread and Shank Design: The coarse tolerance normal shank and medium length thread are critical for ensuring proper fit and function in aerospace assemblies.
• Surface Finish: Cadmium plating is required to enhance corrosion resistance, which is vital for components exposed to harsh environmental conditions.
• Temperature Classification: The screws are rated for performance at ambient temperatures up to 235 °C, making them suitable for a variety of aerospace applications.

Implementation Benefits

Adhering to the BS EN 3.3558 standard provides several advantages for manufacturers and compliance professionals in the aerospace sector. The standard ensures that screws meet stringent performance criteria, which is essential for maintaining safety and reliability in aircraft operations. By using screws that comply with this standard, manufacturers can:

• Enhance the structural integrity of aerospace assemblies.
• Reduce the risk of component failure due to inadequate fastening solutions.
• Streamline compliance with regulatory requirements, thereby facilitating smoother certification processes.
• Improve overall product quality and customer satisfaction.

Compliance Value

Compliance with BS EN 3.3558 is not merely a regulatory obligation; it is a strategic advantage in the competitive aerospace industry. By ensuring that all screws used in aircraft construction and maintenance meet this standard, organisations can demonstrate their commitment to quality and safety. This compliance helps mitigate risks associated with non-conformance, such as:

• Legal liabilities arising from product failures.
• Increased costs associated with rework or recalls.
• Damage to reputation and loss of customer trust.

In conclusion, the BS EN 3.3558 standard for screws is essential for ensuring the safety and reliability of aerospace applications. By adhering to its specifications, manufacturers can achieve compliance, enhance product performance, and ultimately contribute to the advancement of aerospace technology.