Concrete screw, also called anchor screw or concrete bolt, are designed for quick, safe, secure fastening for a variety of jobs in concrete, cement, brick, cinder block and masonry.
Concrete screw is an externally threaded, hardened screw with a double lead, consisting of alternating raised and lowered threads with notches cut into the threads, and a diamond-shaped, nail type point.
Concrete screws eliminate the need for an anchor when used in light and medium duty applications. When used in concrete, concrete screws can be removed and re-driven into the same hole.
Concrete anchor screws provide self-threading action and maximum holding power for anchoring the following to masonry: electrical junction boxes, wooden beams, plywood, exterior insulation, metal flashing, expansion joints, duct straps, gutters, fixtures, and thresholds. These screws are available in two different head styles: flat head and hex head. Flat head screws have a phillips drive style, while the hex head can be a slotted or unslotted indented hex head style.
