GRK Fasteners R4 Multipurpose Screw #12 x 5-5/8″ – 50-Count Handy Pack

Upgrade your fastening game with the GRK R4 Multi-Purpose Screw. Engineered for efficiency and durability, these screws tackle a wide range of materials—from softwoods and particle board to cement fiberboard and sheet metal—without the need for pre-drilling. The star-drive head provides maximum bit engagement, while the innovative self-countersinking design ensures a clean, flush finish every time.

Each screw features six cutting pockets that act like miniature routers, removing debris and widening only the countersink area to match the head profile. The W-Cut thread slices through fibrous materials with ease, reducing splitting and lowering both torque and friction. Protected by GRK’s Climatek® corrosion-resistant coating, these screws stand up to intermittent moisture and are approved for use with treated lumber.

Key Features

• Self-Countersinking Head: Six cutting pockets remove debris and create a precise countersink
• Zip-Tip Point: Starts easily in wood, particle board, cement fiberboard, plastic or sheet metal
• W-Cut Thread: Acts like a saw blade for clean cuts and reduced splitting
• CEE Thread Geometry: Lowers installation torque and friction
• Star (Torx) Drive: Maximum bit engagement for faster, slip-free fastening
• Climatek® Coating: Superior corrosion resistance, ideal for interior and exterior use
• Versatile Applications: Remodeling, fencing, storage, cabinet installation, framing, and more
• Handy Pack: 50 screws per pack