The Simpson HDUE5-SDS3HDG HDUE 11-5/16 in. Hot-Dip Galvanized Predeflected Holdown with Strong-Drive SDS Screws is an engineered connector from Simpson designed to secure shearwalls, braced wall panels, and other lateral-force-resisting assemblies in wood construction. Built from 14-gauge steel with a hot-dip galvanized finish, this holdown combines a predeflected seat design with an overlapping back plate and optimized fastener geometry to deliver dependable overturning resistance - making it a reliable choice for modern residential structural applications.

Key Features

• Predeflected seat reduces deflection under load - helps maintain structural integrity and performance of shearwall and lateral-force-resisting assemblies where dimensional stability under stress matters most.
• Overlapping back plate increases fastener strength and shear values - distributes load more effectively across the connection, helping prevent post splitting and adding overall structural confidence.
• Optimized screw patterns reduce splitting at the end of the post - positions fasteners to maximize individual fastener capacity while protecting the wood member, especially at vulnerable end-grain areas.
• Extruded seat adds a greater cross-sectional steel section - contributes additional strength at the base of the connector where bearing loads are highest.
• Teardrop holes allow higher and more even distribution of load - the hole geometry spreads force more uniformly across the connector, improving overall connection performance.
• Installs with Strong-Drive SDS Heavy-Duty Connector screws (included) - using purpose-matched fasteners right out of the package simplifies installation and ensures the connection performs as engineered.
• Hot-dip galvanization provides extra corrosion resistance - makes this holdown well-suited for exterior installations and treated-wood applications where standard coatings may not hold up over time.

Why This Product

• Engineered to minimize movement at the connection - the predeflected seat design directly addresses one of the most critical performance factors in holdown applications: deflection under lateral load, giving builders confidence in long-term shearwall performance.
• Multiple strength-enhancing design elements work together - the combination of an overlapping back plate, extruded seat, teardrop holes, and optimized screw patterns means this connector is not a single-feature solution but a comprehensively engineered anchor point for demanding structural connections.
• Ready to install with no additional fastener sourcing required - the included 1/4 in. x 3 in. Strong-Drive SDS Heavy-Duty Connector screws and crescent washer mean the correct hardware is on hand immediately, reducing delays and eliminating guesswork on fastener compatibility.
• Hot-dip galvanized finish extends service life in harsh conditions - for contractors working on exterior framing or projects using pressure-treated lumber, the HDG coating provides a level of corrosion protection that goes beyond standard zinc plating, keeping the connection sound over the life of the structure.

Specifications

• Model Number: HDUE5-SDS3HDG
• Height: 11-5/16 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 and treated-wood applications requiring enhanced corrosion resistance

What's Included

Each pack contains (1) HDUE5-SDS3HDG Hot-Dip Galv. Predeflected Holdown, (10) 1/4 in. x 3 in. Strong-Drive SDS Heavy-Duty Connector screws and (1) crescent washer.

Frequently Asked Questions

What fasteners are used to install the HDUE5-SDS3HDG?

This holdown installs with a 5/8 in. anchor bolt and (10) 1/4 in. x 3 in. Strong-Drive SDS Heavy-Duty Connector screws, which are included with the product.

Why does this holdown feature a predeflected seat?

The predeflected seat is specifically engineered to reduce deflection under load, helping maintain the structural integrity and performance of shearwalls and lateral-force-resisting assemblies during dynamic loading conditions.

Is the HDUE5-SDS3HDG suitable for use with treated lumber or exterior applications?

Yes. The hot-dip galvanization (HDG) finish provides extra corrosion resistance, making this holdown well-suited for exterior installations and applications involving treated wood where standard coatings may be insufficient.

What is the purpose of the overlapping back plate on this holdown?

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

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