All Socket Set Screws

A machine screw with no external head, usually using a hex or flat head drive. Set screws can have multiple point types, but the cup point is generally the standard set screw point. Other points include, Cone, Knurled, Dog, Oval and Flat points. Set screws are usually used to secure parts on a shaft, but you are probably more used to seeing set screws used installing bathroom towel racks and the like.