For those times when you could really use a quick 3D model, this metric screw generator will do the trick for screws between M2 and M16 with matching nuts and washers. Fastener hardware is pretty a… ...

Flange head screws can be fastened and unfastened by a wide range of drivers, depending on the geometry of the head's surface. You can find them with slotted heads, Phillips, hex, and more.

To remove a screw with a broken head or if the head is completely worn, use a screw extractor. This tool works great for both snapped screws and worn screw heads.