Simpson Strong-Tie Strong-Drive No. 9 Sizes X 2-1/2 in. L Star Hex Head Serrated Structural Screws

The Strong-Drive SD Connector screw is specifically designed to replace nails in certain Simpson Strong-Tie connectors and is the only screw approved for that application. The load-rated SD screw has been tested and approved for use in many popular Simpson Strong-Tie products. In certain applications screws are easier and more convenient to install than nails, and the single-fastener load values achieved by the SD screw exceed those of typical 10d common or 16d common nails. In addition, the galvanized coating makes the SD screw ideal for interior and most exterior conditions.

Product Features:

• Tested and approved for use in many of our best-selling connectors for both interior and most exterior applications
• Ideal for use in connector applications where more control is desired or using a hammer is inconvenient
• Clear zinc electro-galvanized finish; for information on corrosion, materials and coatings, see Corrosion Information1/4 inch hex head reduces cam-out for easier installation
• Shank is specifically designed to match the fastener holes in Simpson Strong-Tie connectors
• Patented serrated threads and sharp point make driving easier
• Optimized heat treating for ductility and strength