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. The Strong-Drive® SD connector screw features an optimized shank, specifically designed for capability with the fastener holes in Simpson Strong-Tie connectors. The hex head virtually eliminates cam-out and helps avoid stripping of the head during installation. The sharp point of the screw enables fast starts and the patented serrated threads reduce torque for improved drivability.

• Specifically designed to replace nails in certain Simpson Strong-Tie connectors and is the only screw approved for that application
• Ideal for use in connector applications where more control is desired or using a hammer is inconvenient
• 1/4 in hex head with 0.37 in Dia integrated washer reduces cam-out and is stamped with the Simpson Strong-Tie and the fastener size for easy identification after installation
• Shank is specifically designed to match the fastener holes in Simpson Strong-Tie connectors
• Patented serrated threads and sharp point make driving easy
• Optimized heat treating for ductility and strength
• The single-fastener load capacity of the SD9 exceeds the capacity of a 10d common nail, while the single-fastener load capacity of the SD10 exceeds that of the 16d common nail

• Specification Sheet https://assets.unilogcorp.com/187/ITEM/DOC/Simpson_Strong_Tie_100317905_Specification_Sheet.pdf