Hexagonal rivet nuts, also known as pull rivet nuts, pull nuts, and instant pull nuts, are used for fastening various metal sheet and pipe manufacturing applications. 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. They were developed to address the shortcomings of welded nuts on thin metal sheets and thin tubes, such as the tendency to melt and the tendency to strip when tapping internal threads. They eliminate the need for tapping internal threads or welding nuts, resulting in secure, efficient, and easy-to-use rivets.
First, the materials used in the production of self-clinching nuts are inspected, including the wire used. Generally, self-clinching nut wire manufacturers order their wire from specialized wire manufacturers and do not produce their own wire. At this point, we inform the wire manufacturer of the required specifications, model, size, and size. Upon ordering, the wire material must be inspected. If we require iron wire, it must be iron; if we require stainless steel wire, it must be stainless steel. Finally, we inspect the specifications, model, size, and other aspects. To see if they meet our requirements.
In fact, we inspect the entire production process of self-clinching nuts. After they're punched out of the nut machine and shaped, we inspect all aspects of their shape and dimensions to see if they meet customer requirements, either the sample provided by the customer, or the drawings we draw based on the customer's sample. After the punching inspection, we inspect the tapping. We also inspect all aspects of the self-clinching nut's threads to see if they meet the go/no-go gauges, ensuring that the go gauge is smooth and the no-go gauge is tight.
Next, some self-clinching nuts made of carbon steel (or iron) require electroplating in different colors. The color of the plating is determined by the customer's specifications; some require environmentally friendly plating, while others are satisfied with standard plating. Electroplating inspections also include many aspects, including the color of the plating and the duration of salt spray testing after plating.