Back Home / Fasteners / Bolts / MACHINE SCREW PHIL PAN HD #4-40 X 3/8″ STAINLESS MACHINE SCREW PHIL PAN HD #4-40 X 3/8″ STAINLESS SKU: X440X38PSS Categories: Bolts, Fasteners 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. Case Quantity: 100 Log In For Pricing