GRK Fasteners R4 02179 Framing Screw, #12/14 Thread, 7-1/4 in L, Partial Thread, Countersunk, Flat Head, Star Drive

Frame with ease and confidence. Multi-use screw for wood, particle board, sheet metal, cement fiber board, laminate and wood decking and melamine. They are self-tapping eliminating pre-drilling featuring a countersinking head with cutting teeth, W-Cutâ„¢ for reducing splitting, CEE Threadâ„¢ for no splitting, reducing install torque and our Climatekâ„¢ AC257 code approved coating. GRK’s R4â„¢ self-countersinking screw has a patented underhead with saw-blade like cutting teeth and six self-contained cutting pockets. Together they act similar to a circular saw-blade, transporting the drill dust away from the edge of the screw hole while cutting a perfectly clean hole into even the most brittle materials without cracking any surface treatment. This design enhances the R4â„¢’s versatility by allowing the fastener to countersink into even the hardest woods. The head of the screw closes the hole off with precision, leaving no damaged fibers around the head. R4â„¢ screws 2 in and longer have a four threaded CEE Thread. This enlarges the screw hole for the non-threaded portion of the fastener, allowing the wood to settle easily. It increases the screw’s drawing strength and reduces the friction on the screw shank that lowers the driving torque.