Simpson Strong-Tie Strong-Drive SDWH SDWH19400DB-RP1 Timber Screw, 4 in L, Coarse Thread, Large Hex Washer Head

Strong-Drive® SDWH Timber-Hex screws are designed for structural and general-purpose fastening applications where a hex head drive is preferred. These screws are ideal for the contractor and do-it-yourselfer alike. The SDWH Timber-Hex is code listed in IAPMO UES ER-192 and meets 2018 and 2021 IRC® and IBC® code requirements for most common wood framing applications.

Made of carbon steel with a double-barrier coated finish, with applicable materials Wood, drive size 5/16 in, drive type Hex.

Application

For structural wood-to-wood and engineered-wood connections including ledgers

• Bold thread design that provides excellent holding power
• SawTooth® point 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 (0.65 in head Dia)
• Size identification on all SDWH screw heads
• Double-barrier coating provides a level of corrosion resistance that is equivalent to hot-dip galvanization (ASTM A153, Class D) in most non-marine environments