Simpson Strong-Tie SDWH19600DBMB 5/16" X 6" Strong-Drive® SDWH TIMBER-HEX Double Barrier Screw (250/Box)
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.
The screw has a SawTooth® point that makes for fast installations with reduced torque without predrilling, and its specially designed head countersinks easily to provide a clean, flush finish. The T25 bit holds the 6-lobe recess tightly for more secure drive control. Available in 2 1/2", 3", 3 1/2" and 4" lengths for a variety of uses.
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.
Features
- Bold thread design provides superior holding power
- SawTooth® point ensures fast starts, reduces installation torque and eliminates the need for predrilling in most applications
- Underhead nibs allow for head to countersink into wood with reduced splintering
- Large washer head provides maximum bearing area (0.650" washer head diameter)
- Size identification on all SDWH screw heads
- 5/16" hex drive (replacement driver bit — BITHEXR516-R1)
Specifications
- Length: 6" (152mm)
- Thread Outer Diameter: 0.275" (6.9mm)
- Shank Diameter: 0.195" (5.0mm)
- Thread Length: 2-3/4" (70mm)
- Head Diameter: 0.650" (16.5mm)
- Box Quantity: 250
- Codes/Standards: IAPMO UES ER-192 (including City of LA Supplement), State of Florida FL13975
- Patent Information: US Patents 9,523,383; 11,181,138
Includes
Applications
- Structural wood-to-wood and engineered wood connections including ledgers