Back Home / Fasteners / Screws / MACHINE SCREW SLOT TRUSS HEAD 1/4″-20 X 1/2″ MACHINE SCREW SLOT TRUSS HEAD 1/4″-20 X 1/2″ SKU: 1420X12TH Categories: Fasteners, Screws A straight shank fastener with external threads designed to go through a hole or nut that is pre-tapped to form a mating thread for the screw. Machine screws form a fastening superior in strength to spaced thread screws. The truss head has a low rounded top surface with a flat bearing surface greater in area than a round-head screw of the same size. Made from AISI 1006-1022 or equivalent steel. Zinc plated. 1/4-20 diameter. Length of 1/2″. Preferred in applications where minimal clearance exists above the head. Truss screws provide a trim, finished assembly appearance. Widely used as license plates screws. Case Quantity: 100 Log In For Pricing