20 Pack M5 Hammer Head T Nuts Nickel Plated Carbon Steel For 4040 Aluminum Extrusion Sliding T Slot Bolts For Easy Mounting And A Solid Boss Fit In DIY Projects And Machinery Frames

20 Pack M5 T-nuts for 4040 extrusion, easy mounting
✔️ 19.5x19.5x9.5mm, M5 thread, 0.8mm pitch, nickel-plated steel

These sliding T-slot nuts are designed for 4040 aluminum extrusion and provide a fast, secure mounting point for accessories, frames, and assemblies in DIY projects, robotics, and CNC setups.

✅ 19.5x19.5x9.5mm overall size fits 4040 tracks
✅ M5 thread, 0.8mm pitch for precise fastening
✅ Nickel-plated carbon steel for durability and rust resistance
✅ Easy insertion and removal from end-profile slots

💡 What is a pillow block bearing used for in linear motion systems?

Answer: A pillow block bearing supports a rotating shaft within a frame, aligns it, and reduces wear in moving assemblies. - Handy for CNC machines, 3D printers, robotics, and automation builds - Keeps shafts running true with minimal maintenance - Pairs with extrusion hardware and T-slot nuts for solid frames