... /countersunk,slotted or as request2.Drive type: Phillips, Pozi, Square, Torx, Single, Double3.Material: Brass, Low Carbon Steel, Alloy Steel, stainless ... , slotted countersunk screw, slotted cap head screw, cross recessed screw, torx socket screw, set screw, machine screw, knurled screw, aluminum screw, wing screw ...