The Simpson RTC42 Rigid Tie Corner Connector by Simpson is built to deliver a strong, clean 90 deg. corner connection between two horizontal 2x joist members and a vertical 4x4 post. Whether you are building a sturdy workbench or assembling a storage shelving unit frame, this rigid tie connector simplifies corner construction without sacrificing structural integrity.

Key Features

• Strong 90 deg. corner connection - secures two horizontal 2x members to a vertical 4x4 post with no racking or shifting at the joint
• No angled cuts or angled fastening required - eliminates the risk of splitting the wood during installation, keeping your material intact and your build cleaner
• Stronger than other methods of corner construction - the rigid tie design outperforms traditional toe-nailing and corner-blocking techniques, giving your project a more reliable finished connection
• 18-gauge steel construction - provides solid structural performance in a connector sized right for standard dimensional lumber framing
• G90 zinc galvanized coating - adds a meaningful layer of corrosion resistance, making this connector a dependable choice for projects exposed to moisture or humidity
• Install with SD8x1.25 Strong-Drive screws - compatible fasteners ensure a secure, properly engineered connection from the start

Why This Product

• Cleaner builds with no wood-splitting risk - because the RTC42 requires no angled cuts or angled fastening, you protect your lumber from the cracking and splitting that common corner-fastening methods can cause
• Purpose-built for workbenches and shelving frames - the rigid tie design is specifically suited to the corner connections that workshop and storage builds demand, making it a natural fit for both professional and DIY projects
• Corrosion-resistant finish for lasting performance - the G90 galvanized coating goes beyond basic protection, keeping the connector performing reliably even in damp or high-humidity environments
• Made in the United States to Simpson standards - manufactured by a trusted name in structural connectors, the RTC42 reflects consistent quality and dimensional accuracy for straightforward installation

Specifications

• Model Number: RTC42
• Member Size: 4x4 post; 2x joist
• Gauge: 18
• Coating/Finish: Zinc Galvanized, G90
• Install With: SD8x1.25 Strong-Drive screws (sold separately)
• Country of Origin: United States

Approved Applications

• Workbench construction requiring secure corner connections
• Storage shelving unit frames with 90 deg. corners
• Any project connecting two horizontal 2x members to a vertical 4x4 post at a 90 deg. angle

Frequently Asked Questions

What size post and joist is the RTC42 designed for?

The RTC42 is designed for use with a nominal 4x4 post and a nominal 2x joist, connecting the two horizontal joist members to the vertical post at a 90 deg. corner.

What fasteners are required to install the RTC42?

The RTC42 should be installed with SD8x1.25 Strong-Drive screws for a secure and code-compliant connection.

Why is the RTC42 considered stronger than traditional corner construction methods?

The RTC42 eliminates the need for angled cuts or angled fastening, which can split the wood and weaken the connection. Its rigid tie design delivers a stronger, more reliable 90 deg. corner than conventional fastening methods.

Is the RTC42 suitable for outdoor or moisture-exposed environments?

The RTC42 is manufactured from 18-gauge steel with a G90 zinc galvanized coating, which provides extra corrosion resistance, making it suitable for applications where added protection against moisture and corrosion is needed.

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