Nut forming dies are used to create threaded nuts by shaping metal into a specific design, often for industrial use. They help form the hexagonal or square shape and the internal threads of the nut. These dies are typically made from durable materials like steel or tungsten carbide, which can withstand high pressure and the heat generated during the forming process. The metal is pressed or stamped into a die cavity, and then the threads are formed either by cutting or rolling, creating the final shape and threads for the nut. Nut forming dies improve manufacturing efficiency by enabling the mass production of nuts with consistent quality and size, reducing labor and production costs.