4 Pack Black Corner Brackets For 4040 Aluminum Extrusion 90 Degree Joint Connectors For Standard 8mm Slot Heavy Duty Build Includes 16 M8 T Nuts 16 M8 Screws And 1 Wrench For Easy Assembly

Four-Pack Black 4040 Corner Brackets for Aluminum Frames
✔️ 4-pack includes 4 brackets, 16 M8 nuts, 16 screws, wrench

These black corner brackets are designed to join standard 8mm slot 4040 aluminum extrusion at a 90-degree angle, perfect for building rigid frames, enclosures, and machine supports in DIY projects and hobbyist CNC builds.

✅ Includes 4 corner brackets, 16 M8 T nuts, 16 screws, and 1 wrench
✅ Works with 8mm slot 4040 aluminum extrusion for precise 90-degree joints
✅ Heavy-duty aluminum alloy provides strong support and long service life
✅ Four mounting holes per bracket for even load distribution
✅ Black anodized finish matches frames and resists wear

💡 What is a 4040 aluminum extrusion corner bracket used for in frame building? These handy connectors help builders create strong, square frames for projects like CNCs, enclosures, and workstations. - Suitable for 90-degree joints with 8mm slot profiles - Designed to pair with included M8 nuts and bolts for fast assembly - Keeps panels aligned and frames rigid under load