Socket screws are commonly used in assemblies that do not provide sufficient clearance for a conventional wrench or socket.80 Socket Head Cap Screw, Plain Stainless Steel, 16 mm Length, 10 PK.A hex key is required to tighten or loosen a socket screw.
A self-drilling screw, or tek screw, is similar to a sheet metal screw, but it has a drill-shaped point to cut through the substrate to eliminate the need for drilling a pilot hole.Ideal for any project involving light gauge sheet metal, awnings, door and window frames, gutters, sheds.
A machine screw, also called a stove bolt, is generally a smaller fastener threaded the entire length of its shank.Machine screws are used in fastening nearly all types of hard materials. Commonly used with flat or lockwashers..