GRK 12231 Rugged Structural Screw, 5/16" x 5-1/8" Concrete & Acid Brushes Solid bare copper-covered steel

Solid bare copper-covered steel

TR designation provides visual identification

When combined together in a variety of patterns the colors achieve a perfect blend with nature on any terrain

Hardens in minutes

GRK 12231 Rugged Structural Screw, 5/16" x 5-1/8" Concrete & Acid Brushes Solid bare copper-covered steelThe GRK 5 16 in. x 5 1 8 in. Steel Washer Head RSS Screws (50 Pack) are for use with pre drilled hardware and as lag screw replacements. The screws are designed with a small shank to limit splitting and to provide strength. Highlights: Bit size : #30 Size : 5 16" x 5 1 8" Built in washer Climatek coated Sharp threads and points W Cut thread design, Zip Tip Self tapping specially hardened steel screw