0.22 x 10 Simpson Strong-Drive SDWS TIMBER Screw Double-Barrier Coating (Exterior Screw) – Box (50)Designed to provide an easy-to-install, high-strength alternative to through-bolting and traditional lag screws. The SDWS structural wood screws are ideal for the contractor and do-it-yourselfer alike.

Features:

• Bold thread design that provides superior holding power
• Patented 4CUT tip that ensures fast starts, reduces installation torque and eliminates the need for pre-drilling in most applications
• Under-head nibs that offer greater control when seating the head
• Large washer head provides maximum bearing area (0.75 in head diameter)
• Size identification on all SDWS screw heads
• 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.