Commonly used with flat or lockwashers.
#8-32 x 1-1/2 in Slotted Flat Machine Screw, Plain Brass, 16 PK Machine screws are used in fastening nearly all types of hard materials. Especially useful in metal-to-metal or where heavy duty fastening is required. A machine screw, also called a stove bolt, is generally a smaller fastener threaded the entire length of its shank.