Simpson Strong-Tie SD9112R500 Strong-Drive SD Connector Screw #9 x 1-1/2 in. ...
The #9 and #10 SD screws replace 10d and 16d nails, respectively. 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.