Knuckle

A knuckle is a mechanical component used in various machine systems and structures to allow movement or connection between two parts. Knuckles are often found in vehicle suspension systems, hinge mechanisms, and linkages in industrial machinery. In general, a knuckle acts as a hinge or pivot point that allows limited movement in one or more directions. In automotive systems, for example, a suspension knuckle connects the wheels to the steering and suspension systems, allowing the wheels to turn and dampening vibrations from the road. Knuckles are usually made of strong metal materials such as steel or aluminum to withstand mechanical loads and stresses. Their design and shape can vary depending on their specific application and function within a system.