The prevailing torque type hexagon nut with a non-metallic insert is engineered for robust performance in various industrial applications. Constructed from hardened carbon steel, these nuts are zinc plated to provide basic indoor corrosion protection, making them suitable for environments where exposure to moisture is limited. The hexagon head design facilitates easy installation and removal using standard tools, while the right-hand thread direction ensures compatibility with a wide range of corresponding fasteners. These nuts are designed to meet British Standard Fine (BSF) thread specifications, allowing for secure fastening in applications requiring precise alignment and stability. The non-metallic insert enhances the prevailing torque feature, providing resistance to loosening under vibration and dynamic loads, which is critical in maintaining the integrity of assemblies in machinery and structural applications. With a focus on reliability, these nuts are ideal for use in sectors such as automotive, construction, and machinery maintenance, where high-performance fastening solutions are essential. They are compatible with standard nuts, washers, and inserts, ensuring versatility across different assembly requirements. The product adheres to relevant industry standards, contributing to its suitability for professional use in demanding environments.