Unique-Bargains 4040 Aluminium Inside Corner Bracket 40×35×40 mm Black 10 Pack

Right-angle corner bracket for 4040 aluminium

The bracket joins two 4040-series aluminium profiles at a 90-degree angle. It slides into the 8 mm slot of each profile and is secured with the supplied set screws. Builders of 3D printers, CNC routers, laser cutters and robotics frames use it to create rigid rectangular structures. The pack contains ten identical brackets.

Fits 8 mm T-slot groove on 4040 profiles

Each bracket measures 40 mm by 35 mm by 40 mm and has two mounting holes sized 19 mm by 9 mm. The aluminium alloy body inserts directly into the profile grooves, leaving the exterior surfaces flush. No external plates or additional fasteners are required, so the joint stays compact and keeps the frame’s outer dimensions clean.

Ten brackets per pack for multi-corner frames

The aluminium alloy construction resists corrosion and handles typical structural loads in printer frames and light automation rigs. Each bracket provides a single right-angle joint; larger assemblies need multiple packs. The fixed hole pattern suits the 4040 profile only and does not adapt to other profile series or slot sizes.