Rivet nuts are mostly used in various types of tubes, sheet metal and other manufacturing industries in the field of fastening, widely used in elevators, refrigeration, instruments, switches, automobiles, furniture, railroads, decorative, aviation and other light industrial products and electromechanical assembly. To solve the base material is easy to weld deformation, tapping the internal thread is easy to slip teeth, sheet metal and thin tube welding nut easy to melt and other shortcomings of the development, it does not need to weld the nut, riveted firmly, tapping the internal thread high efficiency, easy to use.