The Simpson MFCB43.5-R25 3-1/2 in. Bypass Framing Fixed-Clip Connector is a heavy-duty structural connector from Simpson Strong-Tie, engineered specifically for cold-formed steel framing applications where reliable, multi-directional load transfer is critical. Manufactured from 14-gauge (68 mil) steel and finished with a G90 zinc galvanized coating, this fixed-clip connector is built to perform in CFS curtain wall framing, steel-to-steel bypass framing, and other demanding structural connections. With more than 50 years of experience in product design, testing, and manufacturing, Simpson Strong-Tie has developed the MFCB connector to give designers the structural confidence and flexibility needed for a wide range of cold-formed steel construction requirements.

Key Features

• Rated for tension, compression, shear, and in-plane loads - covers the full spectrum of structural demands in CFS framing, reducing the need for supplemental connectors or workarounds.
• Varying screw and anchorage patterns achieve different load levels - gives engineers and designers the flexibility to tailor each connection to project-specific structural requirements without switching to a different product.
• Strategically placed stiffeners, embossments, and anchor holes - these engineered details work together to maximize connector performance and structural efficiency at each connection point.
• Made from 14-gauge (68 mil) steel - the heavier steel thickness delivers a higher load capacity, making this connector well-suited for medium-duty CFS curtain wall framing and structural bypass applications.
• G90 zinc galvanized finish - provides extra corrosion resistance, helping the connector maintain long-term performance in environments where moisture exposure is a concern.
• Installed with #12 self-drilling screws to CFS framing - compatible with standard cold-formed steel fasteners, simplifying procurement and keeping installation straightforward in the field.

Why This Product

• Multi-load versatility in a single connector - because the MFCB is rated for tension, compression, shear, and in-plane loads simultaneously, structural designers can specify one connector type across multiple connection conditions rather than sourcing separate products for each load direction.
• Built-in design flexibility for code-conforming connections - the ability to vary screw and anchorage patterns to reach different load levels means this connector adapts to project demands, giving engineers a practical tool for meeting specific structural requirements without over-engineering the connection.
• Performance-optimized geometry - the combination of stiffeners, embossments, and precision-placed anchor holes is the result of deliberate engineering to extract maximum performance from each connector, not a generic stamped bracket.
• Trusted cold-formed steel expertise behind every detail - backed by Simpson Strong-Tie's extensive background in CFS product design, testing, and manufacturing, the MFCB connector reflects decades of focused development in steel-to-steel framing solutions.

Specifications

• Manufacturer Part Number (MPN): MFCB43.5-R25
• Brand: Simpson Strong-Tie
• Connector Type: Bypass Framing Fixed-Clip Connector
• Length: 3-1/2 in.
• Steel Thickness: 68 mil
• Gauge: 14 ga.
• Coating / Finish: Zinc Galvanized, G90
• Load Ratings: Tension, Compression, Shear, In-Plane
• Quantity per Pack: 25 connectors
• Dimensions: 1-1/2 in. x 4 in.
• Country of Origin: United States

Approved Applications

• Cold-formed steel (CFS) curtain wall framing connections
• Steel-to-steel bypass framing applications
• Structural connections requiring tension, compression, shear, and in-plane load ratings
• Applications where varying screw and anchorage patterns are needed to conform to different load level requirements

What's Included

• 25 x Simpson Strong-Tie MFCB43.5 3-1/2 in. Bypass Framing Fixed-Clip Connectors

Frequently Asked Questions

What types of loads is the MFCB43.5-R25 connector rated for?

The MFCB43.5-R25 is rated for tension, compression, shear, and in-plane loads, making it suitable for a variety of structural demands in cold-formed steel framing and curtain wall applications.

What gauge and thickness of steel is used in this connector?

This connector is made from 14-gauge steel with a thickness of 68 mil, providing a higher load capacity well-suited for cold-formed steel construction.

How is the MFCB43.5-R25 installed, and what fasteners are required?

The MFCB43.5-R25 is installed using #12 self-drilling screws to cold-formed steel framing. The connector's design allows for varying screw and anchorage patterns so that different load levels can be achieved to meet specific project requirements.

What corrosion protection does this connector offer?

The MFCB43.5-R25 features a G90 zinc galvanized coating, which provides extra corrosion resistance and helps extend the service life of the connector in cold-formed steel applications.