.#6-32 x 4 in Combination Phillips/Slotted Round Machine Screw, Zinc Plated Steel, 100 PK Machine screws are used in fastening nearly all types of hard materials. A machine screw, also called a stove bolt, is generally a smaller fastener threaded the entire length of its shank. Especially useful in metal-to-metal or where heavy duty fastening is required.
Protects the surface you are fastening to by preventing the fastener head from sinking into the surface.Countersunk Washer, Fits Bolt Size 5/16" Steel, Black Oxide Finish, 30 PK For best results, use a flat head or oval head screw..