The Simpson Strong-Tie RCA-C225/97-R55 Rigid Connector Angle for Concrete is a heavy-duty cold-formed steel connector built for attaching stud framing to concrete supports. This is a rigid connector angle designed for anchoring steel stud framing to concrete in framing, shear, tension, and light-duty moment connection applications. Model Number: RCA-C225/97-R55. If you are tying a stud wall or framing member into a slab or concrete support and need a tested connector with multiple fastening options, this is the part you look at first.

What makes this connector useful on the job is not just the steel thickness, but how the hole pattern is laid out. The 2 inch x 2 inch legs give you enough room to work at both the framing side and the concrete side, and the prepunched holes mean you are not wasting time drilling the connector in the field. On the anchor leg, Simpson gives you options for one 1/2 inch diameter anchor, two 1/4 inch diameter anchors, or two 1/4 inch diameter concrete screws. That flexibility lets the same connector fit different design conditions without making the installer fight the hardware.

The RCA-C225/97-R55 is made from 97 mil, 12-gauge steel with a G90 galvanized finish. In plain terms, this is a thick stamped steel angle with corrosion-resistant coating intended for framing connections where strength and consistency matter. Multiple screw pattern options to the stud framing side allow different load ratings depending on the specified fastener pattern and framing member thickness. That is important because this is not a one-size-fits-all bracket. It is a connector meant to be selected and installed as part of a specific connection design.

Simpson also positions this model to do more than one job. It can be used as a heavy-duty shear and tension connector or as a light-duty moment connection. That gives engineers and installers a practical option when a basic clip angle is not enough, but a more complicated fabricated connection would slow the job down or add cost. The connector has been load rated and tested, which is exactly what you want when the connection is doing real work and cannot be treated like generic hardware.

For installation, the big practical point is straightforward: use all specified fasteners. The connector's published performance depends on the exact anchor choice, screw pattern, number of fasteners to the stud, and framing member thickness. The available anchor options include 1/2 inch diameter Titen HD, 1/2 inch diameter Strong-Bolt 2, 1/4 inch diameter Titen HD, and 1/4 inch diameter Titen Turbo fasteners for attachment to concrete or masonry. That compatibility gives crews a little breathing room if the connection design calls for one anchor approach over another.

This connector is a good fit for commercial framing contractors, drywall and interior framing crews, general contractors, and engineers working with cold-formed steel construction. If you need a clean way to connect steel stud framing to concrete without drilling custom holes in the field, the Simpson Strong-Tie RCA-C225/97-R55 rigid connector angle is the kind of hardware that keeps the connection predictable and the install moving.

Simpson Strong-Tie RCA-C225/97-R55 Rigid Connector Angle for Concrete Gets the Connection Right

This is the kind of connector you buy when the connection actually matters and you do not want the crew improvising at the slab.

• Who it's for: Steel framing contractors, commercial crews, and builders tying stud framing into concrete supports.
• Why it stands out: Thick 12-gauge steel, useful leg size, and prepunched anchor and screw options that reduce field work while keeping the connection load-rated.
• Worth knowing: This is a 55-pack connector listing, not a one-off bracket, and its performance depends on using the exact specified fasteners and anchor pattern.

• What is this connector used for? It is used to attach stud framing to concrete supports in general framing applications.
• Can it use more than one anchor type? Yes. The anchor leg is designed for one 1/2 inch diameter anchor or two 1/4 inch diameter anchors or concrete screws, depending on the connection design.
• Is this a light clip or a heavy connector? It is made from 97 mil, 12-gauge steel and is intended for heavy-duty shear and tension connections, and for light-duty moment connections.
• Does the finish help with corrosion resistance? Yes. It uses a G90 zinc galvanized finish.