Simpson Strong-Tie 0.220 in. x 6 in. T40 6-Lobe, Washer Head, Strong-Drive SDWS Timber Screw, Exterior Grade (50-Pack)

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.

• High-strength timber screw ideal for heavy-duty wood projects
• T40 6-lobe drive reduces cam-out and boosts install speed
• Exterior coating resists corrosion for long-lasting durability