Caliburn Concrete Screws
GRK Fasteners Caliburn Concrete Screws are ideal for use in anchoring to concrete or wood to concrete applications, perfect for deck railing posts. Caliburn™ Concrete screws are professionally engineered fasteners with a patented thread design for ease of driving the screw in pre-drilled concrete and similar applications. Available in three different head designs for multiple applications. Caliburn, Caliburn PH and Caliburn XL are Climatek Coated for high corrosion resistance. Caliburn's uncompromised draw and pull-out strength make it possible to be used in jobs which previously required an anchor. The screw's aggressive thread design afford it the ability to be removed and reinserted into the same pilot hole numerous times - without the concern of the fastener breaking or the threads wearing.