Especially useful in metal-to-metal or where heavy duty fastening is required. Machine screws are used in fastening nearly all types of hard materials.1/4"-20 x 2 in Phillips Flat Machine Screw, Zinc Plated Steel, 6 PK Commonly used with flat or lockwashers..
#6-32 x 1-1/2 in Phillips Pan Machine Screw, Zinc Plated Steel, 35 PK Commonly used with flat or lockwashers. Especially useful in metal-to-metal or where heavy duty fastening is required..