A few common screw head types and what they are used for

Offset V-Lock Accessory Wedge (Screw Slot and screw slot Hexagon Socket Head Cap Screw DIN 912-M5x10, St, bright zinc-platedT-Slot Nut 5 St M5, St, bright zinc-plated screw slot See how to re-slot a screw using a Dremel rotary tool

screw slot file Titanium Mini Screw Cross Slot Head · Screw is available in Titanium with Cross slot head · Mini Screw Cross slot head available with Dia ,,