The threaded inserts are used in plastics and selection

How the nut is embedded in the plastic, there are usually a variety of solutions, as listed on our website:

Several types of copper nuts and injection molding methods and the classification of nuts is the embedding method determines what kind of nut the user chooses, rather than the type of implanted nut determines the implantation method, so how to choose the implantation program?

General purpose plastics, namely polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS) and acrylonitrile - butadiene - styrene copolymer (ABS) can be implanted directly by in-mold injection molding, that is, the nut is placed in the mold cavity during injection molding and molded in a single time. This scheme has the best combination.

Like a nut like this:

But, If the shape of the plastic part is complex, and a plastic part needs to be implanted with multiple nuts, or even multiple nuts have different positioning directions, then the solution of hot melt pressing or ultrasonic pressing is used, just like this nut:

Again, however, If the workpiece is thermoset plastic, you can choose a precise and sharp knurled nut directly pressed, such as this typical direct pressed copper nut: