PHE R4 10 X 3 1/8 in 305SS 210PK Type Deck Screw Head Type Flat Finish Plain Material 18-8 Stainless Steel Screw Size #10 Fastener Length 3 7/64 in Drive Torx Drive Size T25 System of Measurement Inch Application Exterior Structures Multi-Purpose Framing Interior/Exterior Remodeling Dimensional Standards ESR-3201 Features W-Cut Provides Low Installation Torque For Use in Systems Boardwalks Decks Lakes Pools Spas Head Height 0.047 in Head Style Round Head Width 0.368 in