Galvanized or chromated steel (yellow zinc)
Window screws with notches for countersinking are used as fasteners in the manufacture of metal-plastic and wooden windows or as metal window reinforcements.
Thanks to the cross-slot and countersunk head, the window screw can be installed quickly and without disruption, and the countersinking notches serve to ensure longer service life by preventing the screws from self-tightening.
Window screws are made of galvanized steel or chromated steel (yellow zinc).