Holdown HDU8-SDS 2.5

The Simpson Strong-Tie HDU8-SDS 2.5 is a 10-gauge galvanized predeflected holdown engineered for shearwalls, braced-wall panels, and other lateral applications in wood construction. Its factory-predeflected body virtually eliminates deflection under load due to material stretch, ensuring reliable performance and structural integrity. Paired with Strong-Drive® SDS heavy-duty connector screws, this holdown delivers enhanced load capacity and reduced fastener slip compared to traditional bolts.

Designed for fast, hassle-free installation, the HDU8-SDS 2.5 requires no stud bolts or additional washers and installs quickly with a low-speed, high-torque drill equipped with a 3/8″ hex-head driver. The galvanized finish provides excellent corrosion resistance, making it an ideal choice for both residential and commercial projects.

Key Features

• Predeflected seating virtually eliminates deflection under load
• Strong-Drive SDS heavy-duty connector screws for quick, slip-resistant fastening
• (20) 1/4″ × 2-1/2″ SDS screws and a crescent washer included
• No stud bolts to countersink and no extra washers required
• Galvanized 10-gauge steel construction for long-lasting durability

⚠️ WARNING: This product can expose you to Tetrabromobisphenol A known to the State of California to cause cancer and Epichlorohydrin known to cause birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.