Manufactured for top performance in masonry-based applications, the Hillman Blue Flat-Head Phillip Concrete Screw Anchor is designed to fasten objects into concrete, brick and block. A Perma-Seal finish on this Phillips head screw provides long-lasting corrosion protection. High-low chiseled threads on this flat head Phillips screw allow for a steady drive and installation torque reduction. Add this Phillips pan head screw to your tool kit. Uses include: attaching electrical equipment, 2 x 4s, flag poles, hurricane shutters, window installations and more Easy to use Phillips head screw easily installed with a matched tolerance drill bit which is included Perfect for interior and exterior projects Use flat head Phillips screw for light to medium duty applications Designed to fasten applications into concrete, brick and block Perma-Seal climate coating on Phillips pan head screw renders long-lasting corrosion protection 10 Fas-Paks per sellable unit 4 pieces per retail package