What these M3 T-nuts do

M3 T Nuts with a ball bearing for 20 Series (10-Pack) are fastening components for attaching parts to 2020 V-Slot and T-Slot aluminium extrusion. The ball bearing design supports smooth insertion and self-alignment, helping create a strong, reliable connection in structural assemblies.

These M3 T-nuts are built for custom builds and frame-based projects that need a strong, slip-resistant connection on 20 series extrusion.

Key features of M3 T-nuts for 2020 extrusion

• High-strength carbon steel construction provides durability for repeated use in structural and machine assemblies.
• Zinc-plated finish helps resist rust and corrosion in workshop, maker, and light industrial environments.
• M3 threading works with standard M3 screws and bolts for mounting common brackets, plates, and accessories.
• Ball bearing mechanism supports self-alignment, smooth sliding, and secure positioning during installation.
• Drop-in and roll-in design makes it easier to install the fasteners into compatible 20 series extrusion slots.
• Firm locking grip helps the T-nut stay in place when tightened to reduce slipping and 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 3D printers, CNC routers, and other desktop machines. The secure fit helps support accurate, stable frame-based installations.

DIY and modular frame projects

M3 ball bearing T-nuts simplify the process of adding accessories and panels to aluminium extrusion structures. They are useful when building custom enclosures, workstations, protective panels, or modular maker projects without complex mounting hardware.

Automation and robotics builds

The easy positioning and secure hold make these T-nuts useful for mounting sensors, motion components, brackets, and enclosures in automation systems and robotic assemblies. They are a practical choice for projects that need adjustable component placement on extrusion frames.