Rivet nuts, also known as pull rivet nuts, pull caps, instant pull caps, are used in the fastening field of various metal sheets, pipes and other manufacturing industries. Currently, they are widely used in the assembly of electromechanical and light industrial products such as automobiles, aviation, railways, refrigeration, elevators, switches, instruments, furniture, and decoration. Developed to address the shortcomings of metal sheets and thin tubes, such as easy melting of nuts, easy welding deformation of substrates, and easy slipping of internal threads, it does not require internal threading, does not require welding of nuts, has high efficiency in riveting, and is convenient to use.