GRK Fasteners 121050 #9 x 3-1/8 in. Star Drive Torx Bugle Head Multi-Purpose Framing Screw Extended Contractor Pack (720-Piece)GRK Fasteners R4 Multi-Purpose Framing and Decking screw allows you to frame with ease and confidence. Typical applications include multi-purpose general framing, remodeling, decking top boards and structural framing applications. The W-Cut reduces installation torque which allows for fast driving and ease of install. The star drive eliminates stripping for improved productivity. The CEE Thread enlarges hole to reduce splitting, thus eliminating rework. Our Climatek coated screws provide corrosion resistance in pressure treated wood with corrosive ground contact.For use in wood, particle-board, cement fiberboard, plastic, sheet metalStar drive eliminates stripping for improved productivityZip-tip point eliminates the need to predrilled and provides easy starts into woodCEE thread enlarges hole to reduce splitting, thus eliminating reworkW-cut thread design acts as a saw blade providing clean cuts through all wood and fibrous materialsZip-tip allows for no-pre-drilling and 1-step applicationBoth zip-tip and w-cut thread design help eliminate splitting of materialCutting teeth cuts wood fiber and provides flush seatingCEE thread reduces torque and friction during screw-in actionCommon project applications: remodeling, fencing, storage, cabinets, framingESR-3201 approved for structural applicationsCutting pockets underneath head allow screw head to countersink flush with materialGround contact lumber approved for worry free use in pressure treated lumberClimate coating resists corrosionDimensionsScrew Length3-1/8 inSize#9DetailsDrive StyleTorxFastener ColorBrassFastener MaterialCarbon SteelFastener PlatingPolymeric ZincFastener TypeWood ScrewFeaturesACQ Rated, Self TappingGradeNot GradedHead StyleBugle HeadIncludedDriver BitInterior/ExteriorExterior, InteriorMeasurement StandardSAEMeasurement SystemInchesPackage Quantity720Product Weight (lb.)7.72 lbThread Pitch (mm)2 mmThread StyleW-Cut ThreadThreads Per Inch (TPI)13 TPI