BS EN 2870:1996

Overview

BS EN 2870:1996 specifies the requirements for bolts with a normal bihexagonal head, close tolerance normal shank, and short thread, manufactured from titanium alloy. These components are anodized and lubricated with MoS2, ensuring enhanced performance in demanding environments. The classification of these bolts is 1100 MPa at ambient temperature and 315°C, making them suitable for high-stress applications in the aerospace sector.

Key Requirements

• Material Specification: The bolts must be produced from titanium alloy, which offers an excellent strength-to-weight ratio, crucial for aerospace applications.
• Head Design: The bihexagonal head design allows for effective torque application, ensuring secure fastening.
• Close Tolerance: Close tolerance on the shank ensures precise fit and alignment, reducing the risk of failure under load.
• Thread Length: The short thread design minimizes stress concentrations, enhancing the overall integrity of the fastener.
• Surface Treatment: Anodization provides corrosion resistance, while MoS2 lubrication reduces friction during assembly and operation.

Implementation Benefits

Utilising BS EN 2870:1996 compliant bolts in aircraft and space vehicle engineering offers several advantages:

• Enhanced Performance: The combination of titanium alloy and MoS2 lubrication leads to improved performance in high-temperature and high-stress environments.
• Weight Reduction: The lightweight nature of titanium contributes to overall weight savings in aircraft design, which is critical for fuel efficiency and payload capacity.
• Durability: The anodized surface treatment enhances the durability of the bolts, ensuring long-term reliability in service.
• Compliance Assurance: Adhering to this standard helps manufacturers meet regulatory requirements, ensuring safety and reliability in aerospace applications.

Compliance Value

Compliance with BS EN 2870:1996 is essential for manufacturers and engineers in the aerospace sector. This standard not only provides a framework for the design and production of high-performance bolts but also assures end-users of the quality and reliability of the components used in critical applications. By following this standard, organisations can:

• Mitigate Risks: Ensure that fasteners meet stringent safety and performance criteria, reducing the likelihood of component failure.
• Facilitate International Trade: Compliance with European standards can ease the export of aerospace products to international markets.
• Enhance Reputation: Demonstrating adherence to recognised standards can enhance an organisation's reputation for quality and reliability.

In conclusion, BS EN 2870:1996 provides critical specifications for bolts used in aircraft and space vehicle engineering, ensuring that these components meet the necessary performance and safety standards. By implementing this standard, manufacturers can achieve compliance, enhance product quality, and contribute to the overall safety of aerospace operations.