R4 9 X 2-3/4 PRO PACK Type Deck Screw Head Type Flat Finish Climatek Material Steel Screw Size #9 Fastener Length 2 45/64 in Drive Torx Drive Size T25 System of Measurement Inch Application Exterior Structures Multi-Purpose Framing Interior/Exterior Remodeling Dimensional Standards ESR-3201 ICC-ES AC257 Features W-Cut Provides Low Installation Torque For Use in Systems Cement Fiber Board Composite Decking Melamine Particle Board Plastic Sheet Metal Wood Wood Decking