5/16"-18 x 3-1/2" Zinc Phillips Flat Head Machine Screws (25 pcs.)

Diameter: 5/16"
Length: 3-1/2"
Material: Steel
Finish: Zinc
Head Style: Flat (Phillips)
Thread Size: 18 (Coarse)
Thread Length: Full
Type: Machine Screw

Box of 25.

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.