The Simpson SUBH3.25 3-1/4 in. 18-Gauge Bridging Connector is a Simpson Strong-Tie wall stud bridging connector engineered for cold-formed steel framing in curtain-wall construction, U-channel bridging, wall bracing, and related CFS applications. Manufactured from 18-gauge (43 mil) steel with a zinc galvanized G90 finish, this compact clip is built to deliver reliable, tested performance across a wide range of stud sizes and web thicknesses. Its low-profile design keeps framing layouts clean and efficient, making it a go-to solution for cold-formed steel crews working on projects of any scale.

Key Features

• Single-installer setup - one person can install these clips without assistance, reducing crew requirements and keeping projects on schedule.
• One-screw installation in many applications - minimizing fastener count cuts labor time significantly and lowers overall installation costs on CFS framing projects.
• Tested to include stud-web strength and stiffness in tabulated design values - gives engineers and inspectors verified, code-supportable performance data rather than estimates.
• Flexible compatibility with web thicknesses from 33 mil (20 ga.) through 97 mil (12 ga.) and stud sizes from 3-5/8 in. to 8 in. - one connector solution works across a broad range of framing configurations, reducing the need to stock multiple part numbers.
• Compact profile allows standard 1-5/8 in. studs to be sistered directly against adjacent studs - eliminates clearance conflicts and keeps framing assemblies tight without modification.
• Accommodates single members from 33 mil (20 ga.) to 54 mil (16 ga.) - provides reliable bridging performance across lighter-gauge single-member applications common in curtain-wall and interior framing work.

Why This Product

• Engineered specifically for cold-formed steel framing - Simpson Strong-Tie designed the SUBH bridging connector line to address the real demands of CFS jobsites, including tested strength values that account for stud-web performance, giving buyers confidence in the structural results.
• Dramatically reduces installation labor - the combination of single-installer capability and one-screw attachment in many applications means faster cycle times per connector, which adds up quickly across a large framing project.
• Broad compatibility simplifies procurement - the wide range of compatible stud sizes and web thicknesses means this connector handles diverse CFS assemblies without requiring separate part numbers for each condition, streamlining ordering and jobsite inventory.
• Compact profile preserves framing layout integrity - the low-profile design that allows 1-5/8 in. studs to be sistered directly against adjacent studs prevents interference issues that can slow framing or force field modifications.

Specifications

• MPN: SUBH3.25-R150
• Brand: Simpson Strong-Tie
• Width: 3-1/4 in.
• Gauge: 18
• Thickness: 43 mil
• Coating/Finish: Zinc Galvanized, G90
• Compatible Stud Sizes: 3-5/8 in. to 8 in.
• Compatible Web Thicknesses: 33 mil (20 ga.) through 97 mil (12 ga.)
• Single Member Capacity: 33 mil (20 ga.) to 54 mil (16 ga.)
• Pack Quantity: 150
• Install With: Fasteners may vary by application; refer to Simpson Strong-Tie catalog or strongtie.com
• Country of Origin: United States

Approved Applications

• Curtain-Wall Construction

What's Included

• 150 x Simpson SUBH3.25 3-1/4 in. 18 ga. Bridging Connectors

Frequently Asked Questions

How many screws are typically required to install the SUBH3.25 bridging connector?

Many applications require only one screw to secure the SUBH3.25 bridging connector, which greatly reduces labor costs and increases productivity on cold-formed steel framing projects.

What stud sizes and web thicknesses is the SUBH3.25 compatible with?

The SUBH3.25 offers flexible design solutions for stud sizes ranging from 3-5/8 in. to 8 in. and web thicknesses from 33 mil (20 ga.) through 97 mil (12 ga.). For single members, it accommodates thicknesses from 33 mil (20 ga.) to 54 mil (16 ga.).

Can standard 1-5/8 in. studs be used alongside this connector without clearance issues?

Yes. The SUBH3.25 features a compact profile specifically designed to allow standard 1-5/8 in. studs to be sistered directly against adjacent studs without interference.

How many connectors are included in the SUBH3.25-R150 package?

The SUBH3.25-R150 package includes 150 bridging connectors, making it well suited for larger cold-formed steel framing projects such as curtain-wall construction.