BS 4A 104:2002+A2:2012

Overview

BS 4A 104:2002+A2:2012 specifies the requirements for corrosion-resisting steel bolts with Unified hexagons and Unified threads, classified under strength class 880 MPa, specifically designed for use in aircraft applications. This standard is crucial for ensuring the reliability and safety of aircraft structures, where the integrity of fasteners is paramount.

Key Requirements

The standard outlines several key requirements that must be adhered to when manufacturing and using these bolts:

• Material Specifications: The bolts must be made from corrosion-resisting steel, ensuring durability and longevity in challenging environments.
• Mechanical Properties: Bolts must meet the strength class of 880 MPa, ensuring they can withstand the operational stresses encountered in aircraft applications.
• Dimensional Tolerances: Precise dimensional tolerances are specified to ensure compatibility with other components and to maintain structural integrity.
• Thread Standards: Unified threads must conform to specified standards to ensure proper engagement and load distribution.
• Quality Assurance: Rigorous testing and quality control measures are mandated to verify compliance with the standard.

Implementation Benefits

Adopting BS 4A 104:2002+A2:2012 offers several practical benefits for manufacturers and compliance professionals:

• Enhanced Safety: By using bolts that meet stringent specifications, the safety of aircraft structures is significantly improved, reducing the risk of failure.
• Regulatory Compliance: Compliance with this standard ensures adherence to aviation regulations, facilitating smoother certification processes.
• Interchangeability: The standardization of bolt dimensions and threads promotes interchangeability, simplifying maintenance and repairs.
• Cost Efficiency: Utilizing high-quality materials and adhering to standards can reduce long-term maintenance costs by preventing corrosion-related failures.

Compliance Value

Compliance with BS 4A 104:2002+A2:2012 is not merely a regulatory requirement; it is a commitment to quality and safety in aircraft engineering. By ensuring that all fasteners used in aircraft meet these specifications, manufacturers can:

• Build Trust: Demonstrating compliance builds trust with regulatory bodies, clients, and stakeholders.
• Minimise Liability: Properly specified and tested components reduce the risk of accidents and associated liabilities.
• Enhance Reputation: Companies known for adhering to high standards are often preferred by clients, leading to increased business opportunities.

In conclusion, BS 4A 104:2002+A2:2012 is essential for ensuring the safety and reliability of aircraft fasteners. By adhering to this standard, manufacturers and compliance professionals can enhance safety, ensure regulatory compliance, and promote operational efficiency.