GRK FASTENERS 01137 10X318 R4 Star Drive FH 350/ProPak delivers exceptional performance for your fastening needs. This Pro Pack contains 350 self-countersinking screws, each measuring #10 x 3-1/8". The patented underhead design features saw-blade-like cutting teeth and six self-contained cutting pockets, enabling these screws to create clean holes without damaging surface treatments, even in the most brittle materials. Whether you're working on decking, stairs, or residential construction, the R4™ screw is versatile enough for both interior and exterior applications. The self-countersinking capability eliminates the need for pre-drilling in most cases, making installation quicker and more efficient. The starhead recess helps prevent stripping, ensuring reliable performance every time. With extreme threads designed to grip fibrous materials, these screws provide a secure hold in difficult applications. For optimal use, employ the red driver tip for #6 and #8 screws, and the green driver tip for #9 and #10 screws. Weighing in at 5.15 pounds, this Pro Pack is easy to handle and transport. Elevate your woodworking projects with GRK FASTENERS 01137, where durability meets precision for a flawless finish.

10X318 R4 Star Drive FH 350/ProPak

• Use Red driver tip for #6 and #8 screws
• No Pre-Drilling Unless Material Requires
• Extreme Threads
• Interior / Exterior Use - Decking, Stairs and Residential Construction
• Use Green driver tip for #9 and #10 screws
• Self Countersinking
• Starhead Recess / Non Stripping Heads
• Can Be Used With Fibrous Materials