Commonly used with flat or lockwashers.
Especially useful in metal-to-metal or where heavy duty fastening is required.#10-32 x 1-1/2 in Phillips Pan Machine Screw, Zinc Plated Steel, 25 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.