The prevailing torque type hexagon nut with a non-metallic insert, conforming to DIN 985 standards, is engineered for reliable fastening in various industrial applications. Manufactured from hardened carbon steel, these nuts are zinc plated with a thick Cr(III) passivation layer, providing enhanced corrosion resistance suitable for normal atmospheric conditions. The non-metallic insert ensures a secure fit by increasing friction against the bolt, effectively preventing loosening under vibration and dynamic loads. These nuts feature a standard hexagon head design, compatible with typical hexagonal sockets, and are designed for right-hand threads, adhering to metric thread specifications. The product meets several international standards, including ISO 10511 and NF E25-412, ensuring compliance with rigorous quality and safety benchmarks. Ideal for use in environments where vibration is a concern, such as automotive, construction, and machinery applications, these nuts are versatile and can be paired with standard bolts, washers, and other fasteners. The zinc plating not only provides basic indoor corrosion protection but also enhances the overall durability of the fastening solution. Engineers and maintenance professionals can rely on these hexagon nuts for their robust performance and compatibility with a wide range of fastening systems, making them a practical choice for both new installations and maintenance tasks.