Plastic 3-Way Corner Joint for Square Tube & Box Section | 10mm to 40mm

This Strong Universal Plastic 3-Way Corner Joint (1 or 4 pack) is the essential component for creating secure, right-angle connections in three planes within your square tube and box section structures.

This connector is used to join three square tubes together, forming a clean corner where height, width, and depth all meet—perfect for creating the solid corners of shelving units, cubes, frames, and display boxes.

Engineered to fit a wide range of popular metric and imperial box section from 10mm to 40mm, it is the heavy-duty, reliable connector you need for both professional and demanding DIY frame building.

Don’t have a size you need? Contact us and we will help.

Snug Fit and Corner Rigidity for Square Tube

This 3-way connector is a structural fitting designed specifically for creating the crucial joint where three tubes meet. It is manufactured from Thermoplastic Polyester and significantly reinforced with glass fibre. This advanced composite material provides the necessary strength and stability for robust, three-dimensional structures:

• Superior Cube Stability: Engineered to rigidly hold three tubes at a precise angle, forming a stable cube corner.
• Anti-Rotation Design: Specifically shaped for the square profile to lock all three tubes in place, preventing rotational movement and wobble in the finished structure.
• High Environmental Resistance: Offers excellent resistance to chemicals and heat, ensuring durable, long-lasting performance in diverse environments like industrial workshops, commercial spaces, and outdoor applications.

The joint features an attractive, subtle frosted finish and provides a snug fitment, resulting in clean professional lines suitable for both functional, moderate heavy-duty structures and aesthetically visible retail displays

Product Features & Specifications

Applications: Build Shelving Units, Display Boxes, and Aluminium Frame Builder

This 3-way corner connector is the ideal solution for any project requiring a strong, reliable intersection where three members meet. Use it to quickly and easily construct:

• Corner Points for Workbenches and Shelving Units
• Display Boxes and Retail Cubbies
• Modular Frame Building Systems (Cubicles, Partitions)
• Complete Cubic or Cuboid Frameworks

Delivery time is typically 2-3 days from order and then shipment.  We will supply sooner where possible.