... rings, Pins, Rivets and etc.2. by head typesFlat, Oval, Binding, Pan, Round, Truss, Button, PF, Pan washer, Cheese, Countersunk, ... head, Hexagon socket button head and etc.3. by type of drive insertsPhillilps, Slotted, Pillips/slotted combination, Cross recess type, ... good service.We can process standard and non-standard screws of different materials and surface treatment that are suitable for your ...