The Hillman Group The Hillman Group 4025 1/4-20 x 1-1/2 In. Stainless Steel Oval Head Phillips Machine Screw (10-Pack) Machine screws are fully threaded along the shaft Fasten with a screwdriver to reduce the risk of over-tightening to protect the screw and fastened material Use for any indoor/outdoor projects Stainless steels are used for their corrosion resistance, high-temperature strength, scaling resistance and low-temperature toughness