Self-forming, self-tapping, adjustable and reverse-locked.
In the medium to long term, direct screw-fittings with metallic screws in plastics can lead to problems with the fit and failure of the thread connection due to movement, vibration and temperature changes.
It follows that it is more natural to attach a plastic component using a screw that is also made of plastic.
The solution here is the development of the K' in K' (plastic in plastic) screw fastening principle.