Nuts are a common type of fastener, a category of mechanical fastening components widely used in fields such as mechanical manufacturing. Nuts are formed by a hollow cylindrical body and an inner threaded collar that corresponds to the screw thread. They connect to another corresponding part through the rotation of the screw, achieving the effect of fixation. Therefore, nuts are part of the fastener family, serving as a function of fixing, connecting, and supporting. They are extensively used in various fields including automotive, rail, aviation, marine, electronics, appliances, construction, and furniture.