. Socket screws are commonly used in assemblies that do not provide sufficient clearance for a conventional wrench or socket.M8-1.25 Socket Head Cap Screw, Black Oxide Steel, 20 mm Length, 6 PK A hex key is required to tighten or loosen a socket screw.
.Sheet Metal Screw, #14 x 3/4 in, Zinc Plated Steel Round Head Slotted Drive, 10 PK Sheet metal screws make excellent fasteners for attaching metal hardware to wood because the fully threaded shank provides good retention in wood.
Machine screws are used in fastening nearly all types of hard materials.#4-40 x 3/8 in Phillips Pan Machine Screw, Plain Stainless Steel, 30 PK Commonly used with flat or lockwashers..