What these M3 T-nuts do

The M3 T Nuts with a ball bearing for 20 Series (10-Pack) are fastening components made for easy, secure attachment to 2020 V-Slot and T-Slot aluminum extrusions. The built-in ball bearing mechanism supports smooth insertion and self-alignment, helping create a strong and reliable grip in structural assemblies.

These M3 T-nuts are designed to provide a strong, slip-resistant connection for custom builds and frame-based projects that use 20 series extrusion.

Key features of M3 T-nuts for 2020 extrusion

• High-strength carbon steel construction with a zinc-plated finish for rust and corrosion resistance.
• M3 thread size for use with standard M3 screws and bolts.
• Ball bearing mechanism for self-alignment, smooth sliding, and a secure hold.
• Drop-in and roll-in design that slides easily into 6mm slots on 20 series extrusion.
• Firm and secure grip that locks in place when tightened to help prevent loosening over time.

Where these 20 series M3 T-nuts are used

3D printer and CNC machine assembly

These fasteners are well suited for attaching brackets, plates, and mechanical components to 2020 extrusion frames used in printers, routers, and other desktop machines.

DIY and modular frame projects

M3 ball bearing T-nuts make it easier to add accessories and panels to aluminium extrusion structures without complex mounting hardware.

Automation and robotics builds

The secure hold and easy positioning make these T-nuts useful for mounting sensors, motion parts, and enclosures in automation systems and robotic assemblies.