Simpson TB20 20-Gauge Galvanized Tension Bridging from Simpson Strong-Tie is an engineer-trusted, contractor-proven solution for bracing floor joists in residential and light commercial framing. This tension-type bridging keeps joists properly aligned, prevents rotation under load, and helps distribute forces across multiple members - making floor systems stronger and safer. Installed in cross pairs, the TB20 delivers reliable structural performance while remaining straightforward to work with on the job site.

Key Features

• Seven nail holes at each end, only two required - gives you maximum nailing flexibility to work around obstacles and adapt to real field conditions without compromising the connection
• Tension-type bridging design - when installed in cross pairs, at least one member is always in tension under any load direction, ensuring joists stay braced and rotation is effectively controlled
• 20-gauge steel construction - provides a sturdy, consistent profile sized for standard joist spacing applications in floor framing
• G90 zinc galvanized finish - offers extra corrosion resistance to help the bridging hold up over the long life of the structure
• Simple two-fastener-per-end installation - requires only two 10d x 1 1/2 in. fasteners at each end, keeping installation fast and straightforward for contractors and builders
• Engineer trusted and contractor proven - Simpson Strong-Tie connectors are engineered, tested, and manufactured to high quality standards, making them a reliable choice for code-compliant framing projects

Why This Product

• Built-in flexibility for faster installs - the seven nail holes at each end mean you are not locked into a single nailing pattern, so you can work efficiently even when framing conditions vary from joist to joist
• A trusted name behind every connector - Simpson Strong-Tie is the choice of engineers and contractors, and the TB20 reflects the same rigorous engineering and testing standards applied across their full connector lineup
• Corrosion resistance where it counts - the G90 galvanized coating helps protect the bridging from moisture exposure common in subfloor environments, supporting long-term structural integrity
• Designed for real jobsite use - with a simple two-fastener-per-end requirement and a tension-type design that works in cross pairs, the TB20 is practical to install and effective at keeping floor joists stable under load

Specifications

• Model Number: TB20
• Length: 20 in.
• Gauge: 20
• Coating/Finish: Zinc Galvanized, G90
• Install With: TB requires two 10d x 1-1/2 in. fasteners per end
• Country of Origin: United States

Frequently Asked Questions

How many nail holes does the TB20 have, and how many are required during installation?

The TB20 features seven nail holes at each end, but only two fasteners per end are required for installation. This design provides maximum nailing flexibility to suit various field conditions.

What fasteners are required to install the TB20?

Installation requires two 10d x 1-1/2 in. fasteners per end of the bridging.

What type of corrosion protection does the TB20 have?

The TB20 is coated with a G90 zinc galvanized finish, which provides extra corrosion resistance for long-lasting performance in floor framing applications.

Why must tension bridging like the TB20 be installed in cross pairs?

Tension bridging works only in tension, not compression. Installing the TB20 in cross pairs ensures that at least one member is in tension under any direction of load, which is essential to properly brace joists and prevent rotation.

Note: Product dimensions and/or screw or bolt holes may differ from picture.