GRK R4 Multi-Purpose Screw is a versatile fastener that delivers increased productivity for hundreds of applications. Its feature-rich design provides a fast and reliable connection every time. R4 Multi-Purpose Screws have a Climatek Coating for installation in both interior and exterior conditions where exposure to moisture is intermittent and is code-approved for use in treated lumber.
- Fast Bite Tip starts fast with less force than the competition, no pre-drilling 
- For use in wood, particle-board, cement fiberboard, plastic, sheet metal 
- Precision Fit reduces wobble between R4 screws and GRK bits for improved productivity 
- W-cut low installation torque allows for fast driving and ease of install 
- CEE Thread enlarges hole to reduce splitting, optimized thread length improves clamping force for increased drawing power 
- Climatek coating for interior and exterior applications 
- Common project applications: remodeling, fencing, storage, cabinets, framing 
- Underhead cutting teeth for flush seating 
- ESR-3201 approved for structural applications