Mechanical parts are components that make up machines and devices, allowing them to function effectively. These parts can include gears, levers, bearings, and shafts, each serving a specific purpose in the operation of the machine. They are typically made from materials like metal, plastic, or composites, chosen for their strength and durability. In various industries, such as automotive and manufacturing, mechanical parts are essential for creating products and machinery. For example, in a car, the engine consists of numerous mechanical parts that work together to convert fuel into motion. Understanding these components is crucial for maintenance and repair.