Have this Tapcon Phillips Flat Head Tapcon Concrete Screws delivered onsite. Works in all masonry-based material including concrete, block or brick. Use these screws for a variety of projects including fixing sill plates, electrical equipment, 2 ft. x 4 ft. and many other fixtures to masonry. Climaseal blue coating delivers long-lasting corrosion protection. Chisel edges accurately cut threads into concrete allowing for consistent driving performance and back holding power. Advanced threadform reduces installation torque by 30%, allowing for use in a wider range of materials. Reputation for quality, strength and ease of installation from industry professionals. Approved for use in ACQ treated lumber. To install, use a 5/32 in. carbide-tipped Tapcon drill bit to drill pilot hole.