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