These #8 x 3 in. GrabberGard gray screws are a coarse thread, standard bugle head screw that attaches sheathing, insulation board, wood, etc. to wood. The GrabberGard exterior-grade coating provides additional corrosion protection, and Grabber describes it as a limited lifetime exterior-grade coating for most exterior applications. Grabber's Pro-Fit #2 Phillips recess is designed for better bit engagement with less wobble or strip-out, the evenly heat-treated heads resist popping off as screws seat, and the 23° Grabber point starts immediately and is less likely to flop over. The screws comply with ASTM C1002 requirements. Use a standard screwgun with a depth-sensitive nose piece. • #8 gauge x 3 in. length, #2 Phillips drive, standard bugle head • Coarse thread with extra sharp 23° Grabber point • GrabberGard gray exterior-grade coating for added corrosion protection • Evenly heat-treated heads resist popping off as screws seat • Application: wood to wood • Suggested screwgun: size #6-#10, up to 4,000 RPM • Sold as a 1 lb. box • Complies with ASTM C1002