Key Features
Self-Jigging Fit The self-jigging design helps position the holdown consistently during installation, which saves layout time and helps keep the connection where the engineer intended it. Lower Deflection Its unique seat design is built to minimize deflection under load. That matters in shearwall and lateral applications where extra movement is not your friend. Built for Bolted Steel Framing This Simpson Strong-Tie holdown is designed for bolted installation in cold-formed steel framing, making it a practical choice for high-wind construction and intermediate-load shearwall work.
Overview
The Simpson Strong-Tie S/HD8B 11″ x 2-5/16″ x 1-1/2″ Holdown for Cold-formed Steel is a bolt-on holdown made for lateral load connections in cold-formed steel framing. This is a holdown designed for intermediate-load shearwalls, braced-wall panels, and other lateral applications in high-wind construction. Model Number: S/HD8B. If you are tying a steel stud wall down to the foundation and want a connector that installs cleanly and keeps movement in check, this is what it is built to do.
The big advantage here is that the S/HD8B is part of Simpson’s self-jigging S/HDB line. In practical terms, that means easier placement during install and less messing around trying to hold alignment while you set bolts and hardware. The prepunched bolt holes are there for bolted installation, which is why this model makes sense when your design calls for bolts rather than screws. Simpson also calls out a unique seat design that greatly minimizes deflection under load, and that is not just a catalog line. In wall systems, less connector movement helps the assembly behave more like it is supposed to.
Dimensionally, the S/HD8B is compact enough to work where you need a smaller member connection without stepping up to a taller holdown. It measures 11 inches high, 2-5/16 inches wide, with a 1-1/2 inch centerline and 7/8 inch standoff. The body is 118 mil, 10 gauge steel with a Simpson Strong-Tie gray paint finish. Those details matter because they tell you this is not a generic bracket. It is a purpose-built steel framing connector sized for a specific kind of engineered holdown job.
On the jobsite, the installation flexibility is useful. The S/HD8B can be installed directly on the bottom track or raised above it, and Simpson specifically notes it is suitable for back-to-back applications where eccentricity is a concern. That gives the designer and installer more options when dealing with wall layouts, track conditions, and boundary member configurations. Simpson also notes that an anchor bolt washer is not required, while standard washers are required on stud bolt nuts for S/HDB models.
This holdown is aimed squarely at cold-formed steel construction, especially projects dealing with high-wind demands. It is a good fit for engineers, framing crews, and commercial or multifamily contractors building with steel studs and needing a tested holdown for shearwall and braced-wall panel work. If your plans call for a bolt-installed holdown and you want a connector that is straightforward, compact, and designed to limit deflection, the S/HD8B is the right kind of hardware to be looking at.
Built for Real Holdown Installation
This is the kind of connector that earns its keep when the wall assembly has to transfer load down into the foundation without a lot of extra fuss.
- Designed for bolted installation in cold-formed steel framing
- Can be installed directly on the bottom track or raised above it
Reduce Movement Where It Counts
The seat geometry is one of the main reasons to choose this holdown. Less deflection means better control of wall movement under load.
- Unique seat design helps minimize deflection under load
- Good fit for intermediate-load shearwalls, braced-wall panels, and lateral connections
Works in Tight Steel Wall Layouts
Cold-formed steel framing can get crowded fast. This holdown is made to work cleanly in that environment, including back-to-back stud applications where offset loading can become an issue.
- Suitable for back-to-back applications where eccentricity is a concern
- Centerline dimension is 1-1/2 in. with 7/8 in. standoff
Compact Size, Purpose-Built Geometry
The dimensions are dialed in for steel framing work, not general-purpose improvising. That makes layout and engineering coordination a lot simpler.
- Overall size: 11 in. high x 2-5/16 in. wide
- 118 mil, 10 gauge steel body with gray painted finish
What’s in the Box
- (1) Simpson Strong-Tie S/HD8B High-Wind Steel Holdown
Key Specifications
| Material | Steel |
|---|---|
| Finish | Simpson Strong-Tie Gray Paint |
| Height | 11 in. |
| Width | 2-5/16 in. |
| Center Line | 1-1/2 in. |
| Standoff | 7/8 in. |
| Thickness | 118 mil |
| Gauge | 10 ga. |
| Weight | 2.8 lb |
| Packaging Quantity | 1 |
Compatibility
Framing Type Designed for cold-formed steel construction. Installation Method S/HDB models are designed for installation with bolts. Stud Bolt Requirement Use A307 stud bolts as specified by Simpson Strong-Tie installation guidance. Wall Configuration Suitable for back-to-back applications where eccentricity is a concern.
Built For
High-Wind Construction Cold-Formed Steel Framing Intermediate-Load Shearwalls Braced-Wall Panels Lateral Applications Commercial Framing Multifamily Steel Stud Work General Contracting
Pro Tip
If you install the S/HD8B raised above the top of concrete instead of directly on the track, make sure the design accounts for the added anchor rod elongation. The connector can be used that way, but the extra movement still has to be figured into the wall deflection.
Tool Nut’s Take
Tool Nut’s Take
Simpson Strong-Tie S/HD8B 11″ x 2-5/16″ x 1-1/2″ Holdown for Cold-formed Steel Keeps It Simple
This is a straightforward engineered holdown for steel stud work where you want bolted installation, compact size, and less deflection without overcomplicating the connection.
- Who it’s for: Steel framing contractors, engineers, and builders handling high-wind wall systems, shearwalls, and braced-wall panels.
- Why it stands out: The self-jigging design and formed seat make install easier and help control movement under load, which is exactly what you want from a holdown.
- Worth knowing: This is the bolt-install model, so make sure your plans and hardware schedule match that approach. If you need a screw-attached version, Simpson points to the S/HDS line instead.
Common Questions
- Is the S/HD8B made for bolts or screws? It is designed for installation with bolts. Simpson directs users to the S/HDS model for attachment to a post or column with screws.
- Can this holdown be installed directly on the bottom track? Yes. Simpson states it can be installed directly on the bottom track or raised above it.
- 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.
- Do you need an anchor bolt washer? Simpson states an anchor bolt washer is not required, but standard washers are required on stud bolt nuts for S/HDB models.
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