GRK 12231 Rugged Structural Screw, 5/16" x 5-1/8" Grout / Slate Sealers Adjust length size: 6' To

Adjust length size:  6' To 12'

Use with electric drill

5/16"-24 NF

Prevents heat escape through the inlet and outlet when flow stops

Maximum Speed: 2300 rpm

GRK 12231 Rugged Structural Screw, 5/16" x 5-1/8" Grout / Slate Sealers Adjust length size: 6' ToThe 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