M3/M4 T-Nut 2020 Profile / 20x20 Profile Nut

M3 and M4 T-Nuts for 20x20 Profile (Optimized and Insert-less)

Tired of commercial metal T-nuts getting stuck in your 3D Printed 20x20 profiles due to tolerances? This design is geometrically optimized to slide perfectly smoothly in both 3D Printed structural profiles and in real extruded aluminum profiles.

Best of all: Forget about brass heat-set inserts! The inner channel is designed with the exact tolerance so that the metric screw itself, when threaded for the first time, taps its own thread firmly into the plastic without cracking the part.

🛠️ Technical Features

• Profile Compatibility: Specifically designed for the slots of standard 20x20 mm profiles. Its geometry compensates for imperfections and layer lines to prevent jamming.
• Insert-less (Self-Tapping): Designed for direct "print and use" assembly. The screw generates its own mechanical thread when entering the material.
• Metrics Included: The model has independent options for Metric 3 (M3) and Metric 4 (M4).
• Real-world Application: Excellent for rapid assembly of fine electronics, control boards (PCBs), cable routing, power supplies, or structural modifications.

🖨️ Print Profile Details

In the downloads tab, you will find two independent profiles (one for M3 and one for M4) so you can launch the print directly from the Bambu Handy App without risking choosing the wrong plate:

• Quantity: Each profile includes an optimized plate with 16 units ready for manufacturing.
• Print Mode: Configured in print by object mode (sequential).
• Strength Tip: The profiles have a robust number of perimeter walls (walls) to ensure that the channel walls perfectly withstand the torque and mechanical tension when the screw taps the thread.
• Materials: Works perfectly with standard PLA for general electronics applications, although you can switch the profile to PETG, ASA, or ABS if you need the nuts to withstand greater mechanical or thermal stress.