A
Anonymous
Apr 18, 2026
Rating: 4/5
Good but tight
Quality is solid, but required a bit of force to insert into 2020 slots.
Description
This L-shaped internal slot connector is designed to join aluminum profiles at a precise 90-degree angle for constructing frames and structures. Crafted for use with 2020, 3030, 4040, or 4540 series extrusions, it fits securely inside the profile channels to create clean, hidden joints without visible hardware on the exterior surface. The component adheres to European and national standards to ensure compatibility with standard T-slot aluminum framing systems. Select the specific profile size variant that matches your extrusion dimensions for a proper fit.
Reviews
Attributes
| Brand | - |
| Category | Industrial Small Parts / Connectors and Fasteners |
| Origin | - |
| Material | Aluminum Alloy 6063 |
| Surface Treatment | Silver Anodized |
| Compatible Profiles | 2020/3030/4040/4545 Series |
| Corner Type | Internal 90 Degree |
| Installation Style | Slot Insertion |
| Thread Compatibility | M5 / M6 T-Nuts |
| Package Quantity | 10 Pieces |
| Unit Weight | 18 Grams |
| Corrosion Resistance | High |
| Manufacturing Standard | European Standard |
5 reviews
A
Anonymous
Mar 25, 2026
Rating: 5/5
Exactly as described
Perfect internal corner solution. No visible hardware on the outside.
A
Anonymous
Mar 21, 2026
Rating: 5/5
Sturdy and Reliable
Used these for a workbench frame. No wobbling at all.
A
Anonymous
Mar 13, 2026
Rating: 5/5
Great for CNC Frames
These connectors fit snugly into my 4040 profiles. Very stable connection for my CNC build.
A
Anonymous
Feb 23, 2026
Rating: 3/5
Needed careful alignment
Works well once aligned, but installation requires patience.
5 FAQ
Q: Are these reusable?
A: Yes, they can be removed and reused if carefully extracted.
Q: Can this be used for outdoor projects?
A: Yes, the anodized finish provides good corrosion resistance.
Q: Do I need special tools?
A: A rubber mallet helps tap them into place securely.
Q: What is the maximum load per corner?
A: Depends on profile thickness, generally suitable for light to medium structural loads.
Q: Will this fit 2020 American Standard?
A: This is designed for European Standard profiles. American 2020 may vary slightly.
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