GRK Fasteners R4 Multipurpose Screw #9 x 2-3/4″ ProPak 475 Count

Experience faster, more reliable installs with the GRK R4™ Multipurpose Screw. Engineered for interior and exterior applications—from wood framing and composite decking to sheet metal and cement fiberboard—this #9 x 2-3/4″ fastener delivers superior holding power without pre-drilling. Its advanced design features reduce driving torque, prevent material splitting, and ensure a clean, countersunk finish every time.

Built for treated lumber and harsh environments, the R4™ ProPak comes in a durable gold Climatek™ coating, meeting ACQ-rated requirements for corrosion resistance. The optimized star-drive recess eliminates cam-out, while innovative thread and tip technologies make one-step installation a reality.

Key Features

• Self-tapping Zip-Tip™ and Fast Bite tip for rapid starts—no pre-drilling required
• W-Cut thread design minimizes torque for smoother driving in fibrous materials
• CEE thread undercut allows wood to settle, increasing withdrawal resistance
• Countersinking head delivers a flush, damage-free surface
• Star-drive (Torx) recess prevents bit slippage and stripping
• Climatek™ Gold coating protects against corrosion in treated lumber