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Concrete Screws cut their own threads and when used in concrete, block or brick, they eliminate the need for an anchor in light or medium-duty applications. When used in concrete, it can be removed and re-driven into the same hole. Special carbide bits are recommended for driving concrete screws into masonry. A ruspert finish is a ceramic coating that also allows these screws to be used in pressure-treated lumber.  Some applications include anchoring the following to masonry: 

 Electrical Junction Boxes  Wooden Beams
 Plywood  Exterior Insulation
 Metal Flashing  Thresholds

RC Fasteners & Components stocks tapcon equivalent concrete screws in Phillips Flat, Indented Hex Washer Head, or Slotted Indented Hex Washer Head.