Simpson Strong-Tie Strong-Drive SD SD9112R500 Connector Screw, #9 Thread, 1-1/2 in L, Serrated Thread, Hex Head

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. Tested and approved for use in many of Simpson Strong-Tie® top-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 1/4 in hex head with 0.37 in Dia integrated washer reduces cam-out and is stamped with the Simpson Strong-Tie® ≠ sign and the fastener size for easy identification after installation Shank is specifically designed to match the fastener holes in Simpson Strong-Tie® connectors Optimized heat-treating for ductility and strength Mechanically galvanized, Class 55 coating meets the requirements for use in preservative-treated and fire-retardant-treated-wood per the 2012 and 215 IRC