• SawTooth point ensures fast starts, reduces installation torque and eliminates the need for predrilling in most applications
• Bold thread design provides superior holding power
• Underhead nibs allow for head to drive flush to surface with reduced splintering
• Large low-profile washer head provides maximum bearing area (0.760-in. head dia.)
• Size identification on all SDWS screw heads
• 6-lobe T40 drive provides positive engagement that makes the screw easy to drive and improves bit life (replacement driver bit BIT40T-134-R2)
• Length: 5 in.
• Color: Black
• Quantity: 250

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.

• SawTooth point ensures fast starts, reduces installation torque and eliminates the need for predrilling in most applications
• Bold thread design provides superior holding power
• Underhead nibs allow for head to drive flush to surface with reduced splintering
• Large low-profile washer head provides maximum bearing area (0.760-in. head dia.)
• Size identification on all SDWS screw heads
• 6-lobe T40 drive provides positive engagement that makes the screw easy to drive and improves bit life (replacement driver bit BIT40T-134-R2)
• Length: 5 in.
• Color: Black
• Quantity: 250

Install With: SDWS screws install best with a low-speed 1/2-in. drill and 6-lobe, T40 driver bit (included)