machine screw with all kinds of head and sizes finish:nickel plated,zinc plated with or without hardend wood screw with all kinds of head and sizescoach screws,fasterner,screws, Hexagon Head Lag Screws 1.finish:nickel plated,zinc plated,2. with or without hardend3. head type: CSK(FLAT) SLOTTED HEAD OVAL SLOTTED HEAD CHEESE SLOTTED PAN SLOTTED HEAD PAN PHILIP HEAD ROUND HEAD POZI HEAD TRUSS HEAD ...