Simpson Strong-Tie Strong-Drive SD SD9212R100-R Connector Screw, #9 Thread, 2-1/2 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.