The Simpson ST18 18" Galvanized Strap Tie is a load-rated, precut structural connector engineered by Simpson Strong-Tie to resist tension loads in a wide range of framing applications. Built from 16-gauge steel with a G90 zinc galvanized finish, this strap tie is the go-to solution for locations where top or bottom plates are cut, at wall intersections, and as ridge ties - delivering reliable structural performance where it matters most.

Key Features

• Engineered to resist wind and seismic forces - provides load-rated tension resistance that helps keep structural connections secure under dynamic lateral loads
• Precut strap design - arrives ready to install without field cutting or sizing adjustments, saving time and reducing installation errors
• 16-gauge steel construction - offers the strength and rigidity required for demanding structural tie applications in residential and light commercial framing
• G90 zinc galvanized finish - delivers corrosion resistance suited for use in moisture-exposed or weather-prone environments
• Compact 1-1/4 in. width profile - fits cleanly into tight framing conditions, including wall intersections and plate transitions, without interfering with adjacent structure

Why This Product

• Versatile structural connector for common framing challenges - the ST18 is specifically designed for the situations framers encounter most, including cut plate repairs, wall intersections, and ridge tie connections, reducing the need to source multiple connector types
• Fast, consistent installation right out of the package - because the strap is precut and load-rated, crews can install it quickly and confidently without on-site modifications, supporting more consistent results across a job
• Economical solution without compromising performance - Simpson Strong-Tie designed this strap tie to be cost-effective while still meeting the tension load resistance requirements for wind and seismic applications
• Flexible fastening options for field conditions - the ST18 can be installed with either nails or Strong-Drive SD Connector screws, giving installers the flexibility to work with what is on hand

Specifications

• Model Number: ST18
• Length: 17-3/4 in.
• Width: 1-1/4 in.
• Gauge: 16
• Coating: Zinc Galvanized, G90
• Finish: Zinc Galvanized, G90
• Country of Origin: United States

Approved Applications

• Installations where top or bottom plates are cut
• Wall intersections
• Ridge ties
• Locations requiring resistance to wind and seismic forces

Frequently Asked Questions

What fasteners are required to install the Simpson ST18?

The ST18 can be installed with either (14) 0.162 in. x 2-1/2 in. nails or (12) #10 x 1-1/2 in. Strong-Drive SD Connector screws.

What gauge steel is the ST18 made from?

The Simpson ST18 is made from 16-gauge steel, providing a strong and durable structural connection.

Is the ST18 suitable for outdoor or moisture-exposed applications?

Yes. The ST18 features a G90 zinc galvanized finish, which provides corrosion resistance for use in environments where moisture exposure is a concern.

What makes the ST18 a good choice for quick installation?

The ST18 is a precut, load-rated strap, meaning it arrives ready to install without the need for field cutting or sizing adjustments, enabling faster and more consistent installation.

Note: Product dimensions may differ from picture. Please see item description for specifications.