1/4-20X1/2 Pan Head Machine Screw Sems Black Oxide external star washer attached
50 pieces 1/4-20X1/2 Pan Head Machine Screw Sems Black Oxide external star washer attached Thread Size1/4″-20Length1/2″ThreadingFully ThreadedHead Diameter0.492″Head Height0.175″WasherOD0.510″Thickness0.028″