HD/HDB Holdowns

HD & HDB Holdowns

HD and HDB Holdowns are structural tension connectors designed to resist uplift and overturning forces in wood framing systems. Commonly used in shear wall and post-to-foundation applications, these holdowns help maintain a continuous load path and reinforce critical structural connections.

At Fasteners Plus, we stock Simpson Strong-Tie HD and HDB holdowns engineered for dependable, code-compliant performance. Whether you're anchoring a shear wall to concrete or reinforcing vertical framing members, these connectors provide reliable tension resistance for residential and light commercial construction.

What Are HD & HDB Holdowns Used For?

Holdowns are typically installed at the ends of shear walls or structural assemblies to resist tension forces caused by wind and seismic activity. They connect wood framing to anchor bolts embedded in concrete foundations or structural supports.

• Shear Wall Anchorage: Secure wall framing to concrete foundations.
• Post-to-Foundation Connections: Reinforce vertical load paths.
• High-Wind Applications: Improve resistance to uplift forces.
• Seismic Reinforcement: Strengthen framing systems in earthquake-prone regions.

HD vs. HDB Holdowns - What’s the Difference?

• HD Holdowns: Reliable tension connectors for standard uplift and shear wall applications.
• HDB Holdowns: Designed with increased capacity and enhanced anchorage for more demanding load requirements.

Model selection depends on allowable load requirements, anchor bolt size, and project design specifications.

Why Choose Engineered Holdowns?

• Resist Uplift & Overturning Forces: Maintain structural stability under load.
• Maintain Continuous Load Paths: Essential for compliant framing systems.
• Engineered & Load-Rated: Designed and tested for structural performance.
• Durable Steel Construction: Built for long-term reliability.
• Code-Compliant Solutions: Frequently specified in modern building standards.

Built for Structural Safety & Compliance

Properly installed holdowns are critical to maintaining structural integrity in wood framing systems. Contractors, engineers, and inspectors rely on HD and HDB holdowns to ensure framing assemblies meet modern building code requirements.

Fasteners Plus keeps structural holdowns in stock and ready to ship. Most orders placed before 4:00 PM CST ship the same day from our centrally located distribution centers, helping keep your project on schedule.