RSS 5/16 X 6 HANDY PAK, Type Deck Screw, Head Type Round, Finish Climatek, Material Steel, Screw Size 5/16 In., Fastener Length 6 in, Drive Torx, Drive Size T30, System of Measurement Inch, Application For Structural Decking, Heavy Duty Framing, Interior/Exterior Remodeling, Ledger Boards, Multi-ply LVL Fastening, Dimensional Standards ESR-2442, ICC-ES AC257