Simpson Strong-Tie .220 x 4" Strong-Drive SDWS Timber Screws
SDWS Timber Screws are Double-Barrier Coated and have a 22d or .22" shank diameter, along with a .75" head diameter. Sdws Screws work great as ledger fasteners and posts. fasteners and have a SawTooth Point which drives nicely into treated wood. Screws are tan in color and are fastened with a torx T-40 bit.