Key Features
Bolt-Look Finish The hex-head profile gives wood connections the look of a through-bolt without the extra drilling and hardware. You get a cleaner decorative finish on pergolas, post bases, and other exposed outdoor framing. Faster Installation This Simpson Strong-Tie hex-head washer is built to work with Outdoor Accents structural wood screws, so installation is simpler than traditional through-bolting. That means less layout, less drilling, and less time spent on each connection. Exterior-Ready Coating The black Quik Guard coating is made for exterior use and gives the washer the right look for Outdoor Accents decorative hardware. It is a practical choice for exposed backyard structures built from treated lumber.
Overview
The Simpson Strong-Tie STN22-R8 Outdoor Accents Hex-Head Washer is a decorative structural washer for outdoor wood connections. This is a hex-head washer designed for fastening wood-to-wood connections with Outdoor Accents structural wood screws. Model Number: STN22-R8. It is built for builders and serious DIYers who want the clean, traditional look of a bolted connection without the hassle of full through-bolting.
What makes this part matter is the combination of appearance and function. Paired with the Outdoor Accents structural wood screw, this washer provides a structural load-rated solution while giving the connection a finished black hardware look. On exposed work like pergolas, arbors, gazebos, and decorative deck framing, that visual detail makes a real difference because the fastener becomes part of the design instead of something you try to hide.
The patented washer design is there for a reason. Instead of drilling all the way through the member and dealing with bolts, nuts, and extra setup time, you can use the washer with compatible Outdoor Accents structural screws for faster installation. That saves time on site, especially when you are repeating the same connection detail over and over across posts, beams, straps, and angles.
This washer is made from steel and finished with a black Quik Guard coating for exterior use. The coating is important because this hardware is meant to stay visible outdoors. It also makes the washer a fit for treated lumber applications, which is where a lot of deck and outdoor structure work happens. If you are matching other black Outdoor Accents connectors, post bases, or straps, this washer keeps the whole build looking consistent.
Size-wise, the washer diameter is about 1-1/2 inches and the hex-head portion is about 1 inch across, so it has enough presence to read like decorative hardware once installed. That larger face helps the connection look intentional on outdoor projects where plain fasteners can look unfinished. It is sold here in an 8-count pack, which makes sense for smaller feature details, repair work, or trimming out a visible section of a larger project.
Compatibility is straightforward. Simpson Strong-Tie lists this washer for use with Outdoor Accents structural wood screws, including 3-1/2 inch and 5-1/2 inch screw lengths called out in supplemental product data, and specifically notes compatibility with Outdoor Accents decorative hardware. It is also used with post bases, T straps, L straps, and angles in the Outdoor Accents system. If you are already building within that platform, this is the washer that ties the look together and keeps the connection within the intended system.
Who should buy it? Anyone building exposed outdoor wood structures where appearance matters almost as much as strength. That includes deck builders, fence and pergola installers, landscape contractors, remodelers, and homeowners doing a backyard structure the right way. If you just need a generic washer, this is overkill. If you want Outdoor Accents hardware to look finished and install faster than through-bolting, this is the right part.
Designed to Look Like Real Decorative Hardware
This washer is built for projects where the hardware stays visible. The shape gives you the look of traditional forged-style fasteners, which works especially well on pergolas, pavilions, arbors, and exposed deck framing.
- Hex-head portion measures about 1 inch across
- Washer diameter is about 1-1/2 inches for a more substantial finished look
Faster Than Through-Bolting
The point of this system is simple: get the decorative bolt look without drilling all the way through the workpiece. Used with the matching Outdoor Accents structural wood screw, it cuts down installation steps and keeps the connection clean.
- Made to work with Outdoor Accents structural wood screws
- Provides a structural load-rated solution when combined with the specified screw
Built for Exposed Outdoor Connections
On an outdoor structure, hardware is part of the finished job. The black coated finish is meant for exterior use and matches the Outdoor Accents line, so your connectors, screws, and washers all look like they belong together.
- Black Quik Guard coating for exterior use
- Suitable for treated lumber applications
What’s in the Box
- (8) Simpson Strong-Tie STN22 hex-head washers with black Quik Guard coating
Outdoor Accents structural wood screws are sold separately.
Key Specifications
| Material | Steel |
|---|---|
| Finish | Black Quik Guard coating |
| Application | Fastening wood-to-wood |
| Hex Head Diameter | 1 in. |
| Washer Diameter | 1-1/2 in. |
| Package Quantity | 8 |
| Compliance | IAPMO-UES ER-192 |
| For Treated Lumber | Yes |
Compatibility
Fastener System Designed for use with Simpson Strong-Tie Outdoor Accents structural wood screws. Screw Lengths Supplementary product data calls out installation with 3-1/2 in. or 5-1/2 in. Outdoor Accents structural wood screws. Hardware Line Made to match Outdoor Accents decorative hardware including post bases, T straps, L straps, and angles.
Built For
Deck Building Pergolas Arbors Gazebos Outdoor Wood Connections Landscape Structures General Contracting DIY / Hobbyist
Pro Tip
If you want the published load performance and the finished Outdoor Accents look, do not mix this washer with random lag screws. Use the matching Outdoor Accents structural wood screw and keep the washer aligned so the hex profile stays square on visible faces.
Warranty & Support
Warranty information in supplementary retailer data is listed as none.
Tool Nut’s Take
Tool Nut’s Take
Simpson Strong-Tie STN22-R8 Outdoor Accents Hex-Head Washer for backyard builds that need to look finished
This is the kind of small hardware upgrade that makes an outdoor project look planned instead of pieced together.
- Who it’s for: Builders, remodelers, and homeowners working on exposed outdoor wood structures like pergolas, deck details, arbors, and post connections.
- Why it stands out: It gives you the decorative bolt look, works with the Outdoor Accents screw system, and installs faster than a full through-bolt setup.
- Worth knowing: This is a system part, not a generic washer. Buy it when you want the Outdoor Accents look and use it with the matching structural wood screws sold separately.
Common Questions
- What is this washer used for? It is used for decorative wood-to-wood connections in the Simpson Strong-Tie Outdoor Accents system, especially where you want the look of a bolted connection.
- Can it be used outdoors? Yes. It has a black Quik Guard coating for exterior use.
- Does it work with treated lumber? Yes, supplementary product data lists it as suitable for treated lumber.
- Does this washer provide a structural connection by itself? No. The structural load-rated solution is based on using the washer with the matching Outdoor Accents structural wood screw.
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