Especially useful in metal-to-metal or where heavy duty fastening is required.50 x 6 mm Phillips Flat Machine Screw, Zinc Plated Steel, 25 PK Commonly used with flat or lockwashers. Machine screws are used in fastening nearly all types of hard materials..
Self-Drilling Screw, #10 x 2-1/2 in, Painted Steel Hex Head Hex Drive, 58 PK Ideal for any project involving light gauge sheet metal, awnings, door and window frames, gutters, sheds..