BS EN 2874:1996

Overview

BS EN 2874:1996 specifies the requirements for large bihexagonal head bolts with a close tolerance normal shank and medium length thread, manufactured from heat-resisting nickel base alloy. These bolts are designed to perform in high-temperature environments, making them suitable for use in aircraft and space vehicle engineering. The classification of these bolts is 1550 MPa at ambient temperature and 315°C, ensuring their strength and reliability in critical applications.

Key Requirements

• Material Specification: The bolts must be made from a heat-resisting nickel base alloy that meets the specified mechanical properties.
• Dimensional Tolerances: Close tolerance dimensions are critical for ensuring proper fit and function in assembly applications.
• Head Design: The bihexagonal head design allows for effective torque application during installation.
• Thread Length: Medium length threads provide adequate engagement for secure fastening in various applications.
• Passivation: The passivation process enhances corrosion resistance, which is vital for components exposed to harsh environments.

Implementation Benefits

Utilising BS EN 2874:1996 compliant bolts offers several advantages in aircraft and space vehicle engineering:

• Enhanced Performance: The specified nickel base alloy provides superior performance under high-temperature conditions, ensuring structural integrity.
• Improved Safety: Compliance with this standard reduces the risk of component failure, which is critical in aviation and aerospace applications.
• Streamlined Procurement: Adhering to a recognised standard simplifies the procurement process, as suppliers are more likely to offer compliant products.
• Quality Assurance: The standard provides a framework for quality control, ensuring that all manufactured bolts meet stringent performance criteria.

Compliance Value

Compliance with BS EN 2874:1996 is essential for manufacturers and engineers involved in the design and production of aircraft and space vehicles. By adhering to this standard, organisations can demonstrate their commitment to quality and safety, which is increasingly important in a highly regulated industry.

Furthermore, compliance can facilitate smoother audits and inspections, as it provides a clear benchmark for evaluating product quality. This can enhance the reputation of manufacturers and suppliers, leading to increased trust from clients and stakeholders.

In conclusion, BS EN 2874:1996 is a critical standard that ensures the reliability and performance of large bihexagonal head bolts in demanding aerospace applications. By following the specifications outlined in this standard, organisations can achieve significant compliance benefits and enhance their operational efficiency.