Simpson Strong-Tie 11-in. Light Gauge Steel Holdown (S/HD8S)
Simpson Strong-Tie 11-in. Light Gauge Steel Holdown (S/HD8S)
Key Features
Overview
The Simpson Strong-Tie 11-in. Light Gauge Steel Holdown (S/HD8S) is a cold-formed steel holdown built for high-load shearwalls, braced-wall panels, and lateral applications. This is a holdown designed for anchoring cold-formed steel wall framing in high-load and high-wind applications. Model Number: S/HD8S. If you are detailing a steel-framed shearwall and need a connector that helps transfer tension loads down into the foundation, this is the part you look at first.
What makes the S/HD8S worth paying attention to is the seat design. Simpson calls out a unique seat that greatly minimizes deflection under load, and that is not just brochure talk. In a holdown, lower deflection means a tighter, more controlled connection at the end of the wall, which helps when the assembly is doing real structural work instead of just checking a box on the plans.
The installation options are practical. The S/HD8S can be installed directly on the base track or raised above it, which gives the designer and installer more flexibility around field conditions. It is also suitable for back-to-back applications where eccentricity is a concern. That matters on steel framing jobs where member layout and anchorage do not always give you the luxury of a perfect, centered condition.
This model is the screw-installed version in the S/HDS family. Simpson specifically notes that the S/HDS series is designed for installation with screws, while the S/HDB version is the one to reference for attachment to a post or column with bolts. In plain terms, this is the right style when your detail is built around screw attachment to cold-formed steel members rather than bolted post or column work.
On build details, the S/HD8S uses 118 mil, 10 gauge steel, measures 11 inches high, and is 2-5/16 inches wide. The finish listed by Simpson for this model is Simpson Strong-Tie gray paint. The dimensions and steel thickness put it in the sweet spot for structural wall end conditions where you need a compact connector with serious jobsite relevance, not a bulky bracket that complicates framing.
From a jobsite standpoint, Simpson also notes that not all fastener holes need to be filled on S/HDS holdowns because additional holes are provided, and fasteners should be installed symmetrically. That is useful information because it affects how crews approach installation and layout. It also helps explain why this holdown is positioned as a practical, installation-conscious connector for cold-formed steel framing.
The S/HD8S is used in high-wind construction and in wall systems where uplift and overturning forces need to be managed correctly. It is a strong fit for engineers, framing contractors, and specialty crews working on cold-formed steel shearwalls, braced-wall panels, and lateral force-resisting assemblies. If you are doing light gauge steel framing and need a holdown that balances structural performance with installation flexibility, this is exactly the kind of connector that earns its keep.
Designed to Keep Deflection in Check
The shape of this holdown is doing real work. The formed seat and side geometry are built to reduce movement under load, which helps keep a high-load wall end connection tighter and more predictable.
- Unique seat design is intended to greatly minimize deflection under load
- Built for high-load shearwalls, braced-wall panels, and lateral applications
Works with Real Steel Framing Conditions
This connector is made for the way cold-formed steel wall systems actually go together. It can sit on the base track or be raised above it, giving the designer and installer more flexibility around anchorage height and wall layout.
- Can be installed directly on the base track or raised above it
- Anchor bolt washer is not required
Good Choice for Back-to-Back Stud Layouts
Back-to-back stud details can get tricky when eccentricity becomes part of the conversation. Simpson specifically calls this design suitable for those conditions, which gives it real value in cold-formed steel shearwall work.
- Suitable for back-to-back applications where eccentricity is a concern
- Designer is responsible for boundary member design in back-to-back stud assemblies
What's in the Box
- (1) Simpson Strong-Tie S/HD8S Light Gauge Steel Holdown
Key Specifications
| Height | 11 in. |
|---|---|
| Width | 2-5/16 in. |
| Steel Thickness | 118 mil |
| Gauge | 10 ga. |
| Center Line (CL) | 1-1/2 in. |
| Standoff (SO) | 7/8 in. |
| Finish | Simpson Strong-Tie gray paint |
| Packaging Quantity | 1 |
Built For
Pro Tip
On S/HDS holdowns, Simpson notes that you do not need to fill every hole because extra holes are provided. The important part is using the specified fasteners and installing them symmetrically so the connection behaves the way the published data expects.
Tool Nut's Take
Simpson Strong-Tie 11-in. Light Gauge Steel Holdown (S/HD8S) is a smart pick for serious steel framing details
If you are working on cold-formed steel shearwalls and want a holdown that is purpose-built for high-load wall end conditions, this one makes a lot of sense.
- Who it's for: Engineers, framers, and contractors working on cold-formed steel shearwalls, braced-wall panels, and high-wind wall assemblies.
- Why it stands out: The low-deflection seat design and the ability to install on the base track or raised above it give it both structural credibility and jobsite flexibility.
- Worth knowing: This is the screw-installed S/HDS version, sold as a single holdown, and the published performance depends on using the correct fasteners and installation pattern.
Common Questions
- What is this connector used for? The S/HD8S is used for high-load shearwalls, braced-wall panels, and other lateral applications in cold-formed steel construction.
- Can it be installed above the base track? Yes. Simpson states it can be installed directly on the base track or raised above it.
- Is this model intended for screw installation or bolted post attachment? This S/HDS model is designed for installation with screws. Simpson directs users to the S/HDB version for attachment to a post or column with bolts.
- Is it suitable for back-to-back stud applications? Yes. Simpson specifically notes it is suitable for back-to-back applications where eccentricity is a concern.