GRK R4 self-countersinking screw with patented underhead cutting teeth that transport drill dust away from the screw hole while cutting a perfectly clean countersink. Climatek corrosion protection for interior and exterior use.

• #8 x 1-1/2" size
• 110 screws per box
• Star drive (T15 bit) resists cam-out
• Self-countersinking head - no pre-drilling needed
• Climatek corrosion protection
• Works in wood, composite decking, particle board, plastic, and sheet metal

Ideal for trim, cabinetry, and interior woodworking.