Back Home / Fasteners / Screws / MACHINE SCREW PHILLIPS FLAT HD 1/4″-20 X 1/2″ BLACK MACHINE SCREW PHILLIPS FLAT HD 1/4″-20 X 1/2″ BLACK SKU: X1420X12FHP2 Categories: Fasteners, Screws FLAT HEAD BLACK OXIDE Machine screws form a fastening superior in strength to spaced thread screws. Made from AISI 1006-1022 or equivalent steel. Flat head Phillips. Case Quantity: 100 Log In For Pricing