The Simpson S/HDU 10-3/8 in. Holdown for Cold-Formed Steel by Simpson Strong-Tie is purpose-built for cold-formed steel framing systems, providing a reliable connection between the shearwall and the foundation to resist overturning forces in demanding structural applications. The S/HDU series is engineered to deliver consistent, high-level performance across high-wind and seismic construction scenarios, combining structural integrity with a streamlined installation process. Pre-deflected geometry sets this holdown apart by virtually eliminating material stretch under load - a measurable advantage on any CFS jobsite where deflection control is critical.

Key Features

• Pre-deflected geometry - virtually eliminates material stretch under load, resulting in low deflection that supports shearwall performance and structural predictability
• Designed for cold-formed steel framing - engineered specifically for CFS construction, ensuring compatibility and code-confidence across light gauge structural applications
• Anchors shearwall to foundation - resists overturning forces in high-wind and seismic new construction, providing a critical structural tie at the base of the wall assembly
• 10 ga. (118 mil) steel construction - heavy-gauge material delivers the load capacity and rigidity required for demanding CFS holdown applications
• Zinc Galvanized, G90 coating - provides reliable corrosion resistance suited to the environments common in light gauge steel framing projects
• Installs with self-drilling tapping screws - uses (12) #14 self-drilling screws to the stud and (1) 5/8 in. diameter anchor bolt to structure, reducing installation time and cutting labor cost on the jobsite

Why This Product

• Deflection control built into the design - the pre-deflected geometry addresses one of the most common performance concerns with holdowns by virtually eliminating material stretch, making this a dependable choice for shearwall assemblies where movement under load cannot be tolerated
• Faster installs, lower labor cost - the use of self-drilling tapping screws means crews spend less time on each connection, translating directly to reduced labor expense on cold-formed steel framing projects large and small
• Rated for the most demanding load conditions - approved for high-wind construction and seismic new construction applications, this holdown is suited for projects where structural performance requirements are at their highest
• Backed by Simpson Strong-Tie engineering - part of a comprehensive cold-formed steel connector system that spans hangers, holdowns, and framing members, giving builders a single trusted source for CFS structural connections

Specifications

• MPN: S/HDU6
• Height: 10-3/8 in.
• Thickness: 118 mil
• Gauge: 10 ga.
• Coating: Zinc Galvanized, G90
• Finish: Zinc Galvanized, G90
• Country of Origin: United States

Approved Applications

• High-Wind Construction

Frequently Asked Questions

What type of framing is the S/HDU6 holdown designed for?

The S/HDU6 is specifically designed for use with cold-formed steel (CFS) framing, making it suitable for a wide range of CFS construction projects both large and small.

How is the S/HDU6 installed?

Install with (12) #14 self-drilling screws to the stud and (1) 5/8 in. diameter anchor bolt to structure. The use of self-drilling tapping screws reduces installation time and saves labor cost.

What makes the S/HDU6 effective at reducing deflection?

The S/HDU series features a pre-deflected geometry that virtually eliminates material stretch, resulting in low deflection under load - a critical performance characteristic for shearwall holdown applications.

What corrosion protection does the S/HDU6 have?

The S/HDU6 is coated with a Zinc Galvanized, G90 finish, providing reliable corrosion resistance for cold-formed steel framing environments.