GRK Caliburn Concrete Screws

GRK Caliburn Concrete Screws are the go-to when anchoring to concrete or wood to concrete applications. They are also ideal for deck railing posts. Caliburn Concrete screws are engineered with a patented thread which allows for a smooth driving into pre-drilled concrete and other similar applications. The Caliburn 's unparalleled draw and pull-out strength make it possible to be used in jobs which previously required an anchor. The thread design allow for the capability to be removed and reinserted into the same pilot hole numerous times - without worry of breaking the fastener or wearing out the threads.

GRK Caliburn Concrete Screws Feature:

• Recessed Star Drive: Zero stripping, with 6 points of contact
• Aggressive Heavy duty threads lock into concrete and can be removed and reinserted with screw damage
• Caliburn XL Washer Head Screws are designed for superior holding power.
• The Caliburn XL is code approved under ICC report ESR-3251
• Climatek Coating is AC257 code approved for use in treated lumber
• Available in Various HandyPaks & Bulk Sizes (3-1/2" Only)
• 19/64" Caliburn screws use a T40 Bit (Included In HandyPaks