80/20 Inc. 33490 Hidden Corner Connector 45 Series

Product Description

The 80/20 INC. 33490 is a hidden corner connector designed for use with the 45 Series T-slot aluminum framing system. It creates a 90-degree inside-to-inside connection between two profiles without exposed hardware, keeping the joint flush and clean. The connector is made from zinc with a clear finish and uses an M8 thread for secure fastening. It measures 1.49 inches in length, 1.25 inches in width, and 0.77 inches in height, and weighs approximately 0.055 pounds. Structural fabricators and machine builders working with 80/20 45 Series extrusions install this component when a concealed corner joint is required.

This connector is used in applications where two 45 Series T-slot profiles meet at a 90-degree inside corner and a flush, hardware-free exterior appearance is needed. Typical install scenarios include custom machine frames, workstations, enclosures, and modular fixtures built from 45 Series extrusion. The inside-to-inside mounting style positions the connector fully within the channel profiles, leaving no visible fastener on the outer faces of the assembled structure.

Key Features

• 90-degree hidden corner connection for 45 Series T-slot profiles
• Inside-to-inside mounting style conceals hardware at the joint
• M8 thread for secure, repeatable fastening
• Zinc construction with clear finish for corrosion resistance
• Compact footprint: 1.49 inches long, 1.25 inches wide, 0.77 inches tall
• Lightweight at 0.055 pounds - minimal load addition to the frame assembly

Compatibility

Designed for use with 80/20 INC. 45 Series T-slot aluminum extrusion profiles requiring inside-to-inside 90-degree corner connections.

Installation Notes

Installation is performed by fabricators or millwrights assembling T-slot framing structures. Power down any associated machinery before modifying an existing frame. Use the correct M8 hex key or driver to seat and tighten the connector fully within the profile channels. Consult 80/20 INC. assembly documentation for recommended fastener torque ranges and profile preparation requirements.