The Simpson LSTI73 3-3/4 in. x 73 in. 18-Gauge Strap Tie is a long-form structural connector from Simpson Strong-Tie built to join and reinforce framing connections across a wide range of light-duty and heavy-duty applications. Its slim, low-profile design makes it specifically suited for use where pneumatic nailing is required through diaphragm decking and wood chord open web trusses, delivering reliable tension load resistance without slowing down the installation process. Versatile enough to be applied on the wide or narrow face of lumber, this strap tie brings straightforward, dependable performance to structural framing projects that demand both flexibility and strength.

Key Features

• Light strap design suitable where pneumatic nailing is necessary through diaphragm decking and wood chord open web trusses - lets crews drive fasteners quickly with a nail gun without removing or working around the strap, keeping production moving on framing and truss connections.
• 3-3/4 in. width - provides a broad bearing surface for distributing tension loads across the connected members, reducing stress concentration at the joint.
• 73 in. length - spans long structural connections in a single piece, eliminating the need for multiple shorter straps and reducing the number of fastener lines required.
• 18-gauge steel construction - delivers a balance of structural integrity and workability, making the strap easy to position and nail while still handling demanding load conditions.
• G90 zinc galvanized coating - provides extra corrosion resistance to help the strap hold up in environments where moisture or humidity could degrade an uncoated connector over time.

Why This Product

• Built for pneumatic-nailing workflows - unlike heavier connector plates that can conflict with nail guns in tight framing conditions, this light strap is engineered specifically for applications where pneumatic nailing through decking and open web trusses is necessary, making it a natural fit for production framing crews.
• One long strap, fewer complications - at 73 in., this strap tie spans significant structural distances as a single continuous piece, which simplifies layout, reduces the number of individual connectors needed, and supports cleaner, more consistent load transfer across the connection.
• Corrosion-resistant finish extends service life - the G90 galvanized coating adds a meaningful layer of protection against rust and degradation, making this strap a dependable choice for structural connections that need to perform reliably over the long term.
• Versatile across connection types and lumber orientations - the strap can be used on both the wide and narrow face of lumber, giving builders the flexibility to address a broad range of framing and reinforcement scenarios with a single connector solution.

Specifications

• Model Number: LSTI73
• Width: 3-3/4 in.
• Length: 73 in.
• Gauge: 18
• Thickness: 43 mil
• Coating: Zinc Galvanized, G90
• Finish: Zinc Galvanized, G90
• Installation Fasteners: 10d x 1-1/2 in. nails (sold separately)
• Country of Origin: United States

Approved Applications

• Diaphragm decking connections requiring pneumatic nailing
• Wood chord open web truss connections
• Tension load resistance in structural framing
• Wind and seismic force resistance applications
• Light repairs and heavy-duty structural projects
• Wide or narrow face of lumber connections

Frequently Asked Questions

What fasteners are recommended for installing the LSTI73 strap tie?

The LSTI73 is designed to be installed with 10d x 1-1/2 in. nails for optimal load performance and connection integrity.

What gauge steel is the LSTI73 made from, and what corrosion protection does it have?

The LSTI73 is made from 18-gauge steel and features a G90 zinc galvanized coating, which provides extra corrosion resistance for durability in demanding environments.

Is the LSTI73 suitable for use with pneumatic nail guns?

Yes, the LSTI73 is specifically designed as a light strap suitable for applications where pneumatic nailing is necessary, including through diaphragm decking and wood chord open web trusses.

What are the dimensions of the LSTI73 strap tie?

The LSTI73 measures 3-3/4 in. wide by 73 in. long and has a thickness of 43 mil, making it a long, versatile strap tie for spanning structural connections.

Note: Product dimensions and/or screw or bolt holes may differ from picture. Please see item description for specifications.