Simpson Strong-Tie SDWS16312Q Strong-Drive SDWS FRAMING Screw 0.160 in. x 3-1/2 in. T25, Quik Guard, Tan 750-Qty

Large head with underhead box-nibs provides increased bearing in structural applications and provides clean and easy countersinking 0.450-in. head dia. SawTooth Type-17 tip for quick starts with no predrilling Serrated threads reduce installation torque for easier driving The 6-lobe drive reduces driver-bit cam-outs, resulting in easier installations and longer bit life Driver bit included BIT25T-2-R2