Especially useful in metal-to-metal or where heavy duty fastening is required. Machine screws are used in fastening nearly all types of hard materials.
Socket screws are commonly used in assemblies that do not provide sufficient clearance for a conventional wrench or socket.1/2"-13 Socket Head Cap Screw, Plain Steel, 1 in Length, 10 PK A hex key is required to tighten or loosen a socket screw..