HIGH STRENGTH CARBON STEEL MATERIAL: These Heavy-Duty Construction Screws Are Made From ASTM A574 Tempered Carbon Steel With A Hardness Of HRC 40 To 45 And A Tensile Strength Of 1800 MPa. The Framing Screws Have A Single-Piece Load Capacity Of 200 Pounds, Twice That Of Ordinary Screws NO PRE-DRILLING DESIGN: These Heavy-Duty Outdoor Deck Screws Have A Self-Tapping Tip And Strong Threads That Penetrate Right Through Hardwood/Thin Sheet Metal/Composite Materials, Star Drive Wood Screws Save Time On Construction No Need To Worry About Wood Splitting No Need To Buy Additional Drill Bits RUSTPROOF: These Outdoor Framing Screws Are Triple Rustproofed With A Zinc Primer, Polymer Sealant And Epoxy Resin, And The Carbon Steel Truss Head Screws Resist Rain, Snow And Coastal Air For Longer Service Life VERSATILE: These Architectural Structural Wood Screws Are Suitable For A Variety Of Materials Including Thin Sheet Metal, MDF, Particle Board, Softwoods And Hardwoods, And Are Ideal For A Wide Range Of Carpentry Projects Such As Deck Framing, Pasture Fencing And Other Outdoor Applications YOU WILL RECEIVE: The Package Contains 100Pcs Wood Screws With A T30 Drill Bit And A Storage Box Which Can Be Used With The Screws To Make Your Installation More Convenient. If You Have Any Questions About This Product We Will Solve Your Problem In 24 Hours ASIN B0DQ3VCW1J Brand Goowoobee Color black Head Type Flat Size Name #14×3in Metal Type Carbon Steel Unit Count 100.0 Count Item Weight 3 Pounds Part Number 2-7/8 Thread Size 2-7/8 Drive System Star Manufacturer Goowoobee Thread Class Standard Thread Style Right Hand Fastener Size 2-7/8 Fastener Type Wood Screws Material Type Carbon Steel Exterior Finish Epoxy Item Dimensions 5 x 5 x 5 inches Number Of Items 100 Thread Coverage Partially Threaded Screw Head Style Flat Compatible Groove Diameter 2.88 Inches