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