A wheel nut is a type of nut used to secure and fasten vehicle wheels. It is typically hexagonal or hexagonal in shape, with a hexagonal hole for use with a wrench or torque bar. Wheel nuts are designed to keep the wheels securely attached to the vehicle's hubs during operation, ensuring safety and stability.

The selection and installation of wheel nuts are crucial, as the correct nuts ensure that the wheels are securely fastened to the vehicle, preventing loosening or detachment while driving. Wheel nuts often have specific torque requirements to ensure they achieve the appropriate tightening force without being too tight or damaging components.