The Simpson HDUE 8-11/16 in. Hot-Dip Galvanized Predeflected Holdown with Strong-Drive SDS Screws from Simpson is built to deliver exceptional strength and reliability for securing shearwalls, braced wall panels, and other lateral-force-resisting applications in wood construction. Engineered with a predeflected seat design and hot-dip galvanized finish, this holdown minimizes deflection under load while providing outstanding corrosion resistance - making it a dependable solution for demanding residential construction environments, including exterior and treated-wood applications.

Key Features

• Predeflected seat - reduces deflection under load, helping maintain the integrity of the holdown connection during lateral-force events
• Overlapping back plate - increases fastener strength and shear values, helping prevent post splitting for a more secure connection
• Optimized screw patterns - reduce splitting at the end of the post and maximize individual fastener capacity, improving overall load performance
• Extruded seat - adds a greater cross-sectional steel section for added strength, going beyond standard stamped-seat designs
• Teardrop holes - allow higher and more even distribution of load across the connector for improved structural performance
• 14-gauge steel construction - provides a robust, heavy-duty base that stands up to the demands of shearwall and braced panel anchorage
• Hot-dip galvanized coating - offers extra corrosion resistance, making this holdown well suited for exterior installations and treated-wood applications where moisture or chemical exposure is a concern
• Includes Strong-Drive SDS Heavy-Duty Connector screws and a crescent washer - everything needed for fastening is in the box, so installation can begin right away without sourcing additional hardware

Why This Product

• Faster, more efficient installation - the included 1/4 in. x 3 in. Strong-Drive SDS Heavy-Duty Connector screws eliminate a separate hardware purchase and are specifically matched to the holdown's optimized screw pattern, reducing installation time on the job site
• Engineered to minimize movement under load - the predeflected seat and extruded seat work together to reduce deflection and add cross-sectional steel strength, giving builders greater confidence in the performance of lateral-force-resisting connections
• Built for corrosive environments - hot-dip galvanization provides a higher level of corrosion protection than standard coatings, making this holdown a practical choice for exterior framing and pressure-treated lumber applications where long-term durability matters
• Splitting prevention by design - the combination of the overlapping back plate and optimized screw patterns actively reduces the risk of post splitting, protecting the structural member and preserving the full strength of the connection

Specifications

• MPN: HDUE3-SDS3HDG
• Height: 8-11/16 in.
• Width: 2-7/8 in.
• Gauge: 14
• Coating: Hot-Dip Galvanized
• Finish: Hot-Dip Galvanized
• Seat Depth: 3-3/8 in.
• Centerline: 1-3/8 in.
• Screw Offset: 1-1/2 in.
• Country of Origin: United States

Approved Applications

• Shearwall holdown connections in wood construction
• Braced wall panel anchorage
• Lateral-force-resisting applications in residential wood structures
• Exterior applications and treated-wood construction requiring enhanced corrosion resistance

What's Included

Each pack contains (1) HDUE3-SDS3HDG Hot-Dip Galv. Predeflected Holdown, (7) 1/4 in. x 3 in. Strong-Drive SDS Heavy-Duty Connector screws and (1) crescent washer.

Frequently Asked Questions

What fasteners are required to install the HDUE3-SDS3HDG?

Install with a 5/8 in. anchor bolt and (7) 1/4 in. x 3 in. Strong-Drive SDS Heavy-Duty Connector screws. The screws are included with the holdown.

Why is a predeflected seat beneficial in a holdown?

The predeflected seat is specifically engineered to reduce deflection under load, which helps maintain the structural integrity and performance of the holdown connection during lateral-force events.

Is the HDUE3-SDS3HDG suitable for treated-wood or exterior applications?

Yes. The hot-dip galvanized (HDG) coating offers extra corrosion resistance, making this holdown well suited for exterior and treated-wood applications where moisture or chemical exposure may be a concern.

How does the overlapping back plate improve performance?

The overlapping back plate increases fastener strength and shear values, helping prevent post splitting and contributing to higher overall load capacity at the connection point.

Note: Product dimensions and/or screw or bolt holes may differ from picture.