The prevailing torque type hexagon nut with a plastic insert is engineered for secure fastening applications, particularly in environments where vibration resistance is critical. Constructed from hardened carbon steel, these nuts are zinc plated to provide basic indoor corrosion protection, making them suitable for various industrial applications. The nuts conform to ISO 7040 and DIN 6924 standards, ensuring compatibility with standard metric threads and offering reliable performance in conjunction with standard nuts, washers, or inserts. The hexagon drive feature allows for easy installation and removal using standard tools, while the right-hand thread direction is typical for most fastening applications. The plastic insert enhances the prevailing torque characteristics, providing additional resistance to loosening under dynamic loads. This design is particularly beneficial in automotive, machinery, and structural applications where maintaining clamping force is essential. These nuts are ideal for use in environments that experience moderate exposure to moisture and are designed to perform effectively under normal atmospheric conditions. Their robust construction and adherence to recognised standards make them a reliable choice for engineers and maintenance professionals seeking durable fastening solutions. The combination of material properties and design features ensures that these hexagon nuts meet the demands of various industrial sectors, providing a dependable fastening option for critical applications.