This is a plastic 6-lobe socket head cap screw approximately conforming to DIN 34813. It is fully threaded (metric thread) and available in various diameters and lengths.
It has a better tightening efficiency thanks to the 6 lobes. The imprint of its head offers a certain comfort during the fixation because the tip does not risk slipping. This avoids any risk of damage to the screw during regular tightening and unscrewing.
More commonly the "Torx" screw, it is characterized by its head which looks like a 6-pointed star. Also called "star" screw.
They can be used in all sectors of activity and are mainly used during regular handling.