GRK Fasteners R4 01105 Decking and Framing Screw, #9 Thread, 3-1/8 in L, W-Cut Thread, Flat Head, Star Drive, Steel

Product Overview

• 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.
• bullet: Fast bite tip eliminates pre-drilling and provides a fast start for one step installation
• bullet: Fast bite tip eliminates pre-drilling and provides a fast start for one step installation
• bullet: W-Cut low installation torque allows for fast driving and ease of install
• bullet: Precision fit reduces wobble between R4 screws and GRK bits for improved productivity