What are the key points to consider in the design of insert nuts?
Insert nuts are generally divided into molding and embedded types. The injection molding insert nuts usually have a knurled pattern on the surface to increase the outer diameter friction achieving anti-loosening effect. Sometimes grooves are designed between the knurl to prevent the nut from falling off due to the melted coating.
The design of the embedded insert nuts mainly with straight knurled, sometimes use hexagonal drive threads. They are usually install by punched, riveted or screwed.