🔧 Build with precision, connect with confidence!
This 20-set kit features solid cast aluminum 90° corner brackets paired with 40 galvanized M5 T-slot nuts and bolts, engineered for robust, corrosion-resistant connections in 20mm aluminum extrusion frames—ideal for professional-grade CNC, 3D printing, and robotics builds.
| Material | Aluminum |
| Drive System | Internal Hex |
| Head Style | Hex |
| Exterior Finish | Chrome, Black |
| Point Style | Round Point |
| Metal Type | Aluminum,Carbon Steel,Cast Aluminum |
| Brand | BLCCLOY |
| Head Type | Button |
| Item Weight | 0.02 Kilograms |
| Thread Type | Unf |
| Thread Coverage | Fully Threaded |
| Fastener Type | button |
| Set Screw Thread Type | UNF |
| Thread Style | Right Hand, Fully Threaded |
| Thread Class | 2A |
| Fastener Size | M5 |
| Size | 20set 1720 bracket |
| Compatible groove diameter | 2E+1 Millimeters |
| Number of Pieces | 20 |
| UPC | 796862232504 |
| Manufacturer | Tongling Hardware |
| Part Number | TGLG-1720BT |
| Item Weight | 0.704 ounces |
| Package Dimensions | 4.8 x 4.76 x 1.06 inches |
| Item model number | TGLG-1720BT |
| Style | 20Pcs 17x20 Bracket with Bolt Nut |
| Item Package Quantity | 20 |
| Measurement System | Metric |
| Batteries Included? | No |
| Batteries Required? | No |
K**.
Great Product
I love how easy and stable it was. I used it to add a seat to the rear of my golf cart. Worked great.
J**W
Fast, Just as described.
Fast, Just as described.
M**G
These are the good ones!
Super strong, nice 6mm bolts, easy to thread every time. These are the best 90 deg fitting that I have found. I'll use these and only these. These are the good ones for any 2020 project.
W**O
Wish it wasn’t made of cast aluminum
The corner idea is good but prongs would break off if there was any shifting while fitting or moving due to shearing. Luckily I was able to reuse the broken corner brackets for the door, with a bit of sanding smooth and painting. It would be great if they were made of something stronger. Fit very well w the tbar 2020s, however. The parts (set screws, hex wrench) were complete and very handy.Not recommended for anything that might need to be moved regularly.
A**T
Excellent corner pieces for a frame
While converting one of my old 3D printers into an enclosure, I decided to replace all of the plastic printed parts. I swapped out the corner triangles for these metal ones and it's far more solid now, no flex whatsoever. As an added benefit, they provide a small "shelf" at each corner to sit a platform on.
N**I
Perfect Fit and Strong Hold
Used these to elongate my laser bed. Perfect fit and strong hold. No jumping or skipping when crossing the joint.
C**
Good value loved the fasteners
The twist lock fasteners were great and I could pop them in anywhere and not just from the end
D**E
Awesome!!
From appearance these are very Heavy duty and perfect for multiple applications. Will buy more in future .
Trustpilot
2 months ago
1 month ago
