GRK Fasteners R4 Multipurpose Screw #9 × 2-1/2″ ProPak

Experience exceptional productivity and clean, reliable connections for all your wood-to-wood applications with the GRK R4 Multipurpose Screw. Engineered for speed and strength, the R4 features patented technology—Zip-Tip® and Fast Bite Tip—for one-step installation without pre-drilling. Its underhead cutting teeth and six self-contained cutting pockets transport debris away from the hole edge, delivering a precise, crack-free countersink every time. Finished with exclusive Climatek™ coating, these screws stand up to intermittent moisture and are approved for treated lumber in both interior and exterior settings.

Whether you’re framing, decking, fencing or remodeling, the R4’s W-Cut™ thread design reduces driving torque and increases draw-down strength. Packaged in a convenient ProPak of 575 screws, each #9 × 2-1/2″ fastener combines versatility and durability to tackle a wide range of projects.

Key Features

• Self-countersinking bugle head with Star Drive (Torx) for precise bit engagement
• Zip-Tip® & Fast Bite Tip technologies eliminate pre-drilling and deliver rapid starts
• W-Cut™ thread design for low installation torque and fast driving
• Underhead cutting teeth & six cutting pockets ensure clean countersinking
• Climatek™ corrosion-resistant coating, code-approved for treated lumber
• Partially threaded shank optimizes wood-to-wood withdrawal strength
• Ideal for multipurpose framing, decking, fencing, remodeling and repairs