Simpson Strong-Tie Strong-Drive No. 5 Sizes X 3 in. L Star Low Profile Head Bold Structural Screws

The Simpson Strong-Tie Strong-Drive SDWS Timber screw is designed to provide an easy-to-install, high-strength alternative to through-bolting and traditional lag screws. This screw is ideal for the contractor and do-it-yourselfer alike. It is code listed in IAPMO UES ER-192 and meets IRC and IBC code requirements for most common wood framing applications. The double-barrier coating provides corrosion resistance equivalent to hot-dip galvanization, making it suitable for certain exterior and preservative-treated wood applications, as described in the evaluation report.New Patented SawTooth point ensures fast starts, reduces installation torque and eliminates the need for predrilling in most applications,Bold thread design provides superior holding power,Under-head nibs offer greater control when seating the head,Large washer head provides maximum bearing area,6-lobe T-40 drive reduces driver-bit cam-outs, resulting in easier installations and longer bit life