TorqueMaster Hex Head Concrete ScrewThe TorqueMaster Hex Head Concrete Screw is designed to securely fasten medium high load applications into concrete, solid brick, hollow brick, and stone surfaces. This high strength design is easy to install, with a deep threaded hex head that resists cam out for strong torque and fastening power. The TorqueMaster Hex Head Concrete Screw is manufactured of steel with a blue ruspert finish and is designed for wood to concrete applications.