Simpson Strong-Tie SDWS19712-R50 7-1/2" Length 0.640" Head Diameter 0.195" Shank Diameter T40 6-Lobe Drive Low Profile Head Serrated Threads 2-3/4" Thread Length SawTooth™ Point Black E-coat® Electrocoating Strong-Drive® SDWS TIMBER Screw (Interior Grade) (50 ct)