The screw for plastic materials also called thread forming screw or self-tapping screw is very specific. The shape of the thread at 30° is special, to penetrate the plastic, for pullout resistance and to maintain the tightening torque.
The thread forming screw is generally made of steel class 10.9 to handle the high mechanical stresses, but also in stainless steel for specific applications in corrosive environments.

Cold formed thread forming screws for plastic materials allow fixing of assemblies at highly competitive costs.

Thread forming screws supplier
Manufacturer thread forming screws
Thread forming insert, screw manufacturer