(Open box not sure if full amount) The SPAX Factor - For the craftsman that concentrates on the details, We Work for You. For the Pro that puts qualify first, we help you create stronger connections, enhance performance and improve results when your reputation is on the line. This high performance wood screw is not your average screw. While it is designed for wood applications it is also functional for other materials like masonry, drywall, plastic, and up to 24ga steel. Masonry and Concrete do require pre-drilling. It is made with carbon steel and coated for durability to fasten strongly and securely. U.S made SPAX is your trusted partner for your fastening needs. Do it Once, Do it Right with SPAX.\nCheck out our Threads - Our patented thread serration technology allows the screw to be driven faster, easier to install, and reduces splitting in wood - Let the SPAX FACTOR take some of the hassle out of your next project\nNo Predrilling in Wood! Unique 4Cut Point design provides a self-drilling feature to prevent splitting in hardwood\nT-Star plus drive provides superior bit engagement - Better bit engagement means quicker installation with less effort - Conveniently allows for one-hand overhead driving\nPatented MULTIhead countersinks the screw head flush in wood\nStay Stronger for Longer - Heat Treated Grade 5 Durability - Tested under the toughest scenarios to give you confidence in every connection\nRequires a T-20+ bit – Included in box\nCommon applications: Exterior treated lumber, deck board installation, outdoor furniture, play structures, shed construction, 2-by framing connections (not recommended for Cedar or Redwood)\nFinish: Double-barrier\nManufacturer Color/Finish: Silver\nSeries Name: Multi-Material\nType: Wood screws\nLength Measurement: 1-1/2-in\nPackage Weight (lbs.): 3\nScrew Thickness: #8\nCollated: No\nContact Type Allowed: Ground contact and fresh water\nDrive: Star\nFor Use on Brick: Yes\nFor Use on Composite: No\nFor Use on Concrete: Yes\nFor Use on Drywall: Yes\nFor Use on Metal: Yes\nFor Use on Plastic: Yes\nFor Use on Vinyl: Yes\nFor Use on Wood: Yes\nHead Type: Flat\nMaterial: Steel\nMaterials Fastened: Universal\nMeasure Type: Standard (SAE)\nMulti-Material: Yes\nNumber of Pieces: 550\nPackage Quantity: 550\nPoint Type: Thread-cutting\nThread Type: Serrated\nUse Location: Exterior\nWarranty: Limited lifetime\nACQ Approved: Yes\nCA Residents: Prop 65 Warning(s): No\nUNSPSC: 31161500