These fasteners, characterized by a sloping, cone-shaped contact surface and a specific angular measurement, are primarily used to secure wheels to a vehicle’s hub. The angled seat centers the wheel accurately on the mounting surface as the nut is tightened. For example, if a wheel is designed for this type of fastener, using a different style could result in improper wheel seating and potential loosening.
The design ensures even distribution of clamping force, reducing the risk of vibration and wheel detachment. The specified angle contributes to the overall safety and performance of the wheel assembly. Historically, the development of these components reflects an ongoing effort to improve vehicle safety standards and wheel attachment reliability across diverse automotive applications.