The Zamac Hammer-Screw is a unique, one-step drive anchor featuring a phillips type head and an internal screw thread for use in concrete, block, brick or stone. The anchor has a body formed from corrosion resistant Zamac alloy with a carbon steel drive screw, and has been developed as an improvement over standard nailin anchors. The anchor is removable and is also offered with an optional perma-seal coated screw.