Nuts are a common type of fastener, classified as a mechanical fastening component, widely used in fields such as mechanical manufacturing. A nut is composed of a hollow cylindrical body and an internal threaded raceway that corresponds to the screw thread. It connects to another component through the rotation of the screw, achieving a fixed effect. Therefore, nuts are part of the fastener category, serving as a function of fastening, connecting, and supporting. They are extensively used in various industries, including automotive, railway, aviation, marine, electronics, appliances, construction, and furniture.