5/16"-18 x 1-1/4" Zinc Plated Steel Coarse Thread Combo Round Head Machine ScrewsType: Machine Screws
Head Style: Round (Phillips|Slotted)
Thread Size: 18 (Coarse)
Thread Length: Full
Type: Machine Screw
Box of 50.
A machine screw, also called a stove bolt, is generally a smaller fastener threaded the entire length of its shank. 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. Commonly used with flat or lockwashers.