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.#8-32 x 3/8 in Phillips Flat Machine Screw, Zinc Plated Steel, 100 PK Commonly used with flat or lockwashers..
Sheet Metal Screw, #14 x 3/4 in, Zinc Plated Steel Pan Head Phillips Drive, 100 PK Sheet metal screws make excellent fasteners for attaching metal hardware to wood because the fully threaded shank provides good retention in wood..
.#8-32 Socket Head Cap Screw, Plain Steel, 1/2 in Length, 10 PK A hex key is required to tighten or loosen a socket screw. Socket screws are commonly used in assemblies that do not provide sufficient clearance for a conventional wrench or socket.