This is a fully threaded plastic thumb screw. The diameter of its head is important since it is 28 mm in diameter and 15.4 mm in head height.
It has a good grip which allows regular screwing and unscrewing thanks to large lugs.
It is an in-house screw, exclusive to Bülte, entirely in polyamide.
It can be used for any type of industry but brings a certain advantage when there are regular manipulations to be done and especially the head of the screw is important.