M8 T Slot Half Round Nuts With Ball Loaded Spring Action, Heavy Duty Carbon Steel, Nickel Plated, For European 4040 Aluminum Extrusions, 8mm Slot, Roll In, 20 Pcs, Ideal For 3D Printer Builds

Heavy-Duty M8 T-Slot Nuts for 4040 Aluminum extrusions
✔️ 8mm slot, ball-loaded, carbon steel, nickel plated, 20 pcs

These M8 T-slot nuts are designed for 4040 European aluminum extrusion profiles. They slide into the 8mm slot to secure brackets and components on CNC machines, 3D printers, laser cutters, and modular frames. Back spring ball helps position the nut for quick, reliable installation.

✅ Fits 4040 extrusions with an 8mm slot
✅ Roll-in design with a fixed ball-loaded spring for easy alignment
✅ Made from carbon steel with nickel plating for rust resistance
✅ Size: 22mm x 13mm x 7.8mm (L x W x H); Thread: M4/M5/M6/M8
✅ Pack options: 10, 20, or 30 pieces

💡 What is a T-slot nut used for with 4040 aluminum extrusion systems? They’re handy fasteners for mounting brackets and accessories along extrusion rails. - lets you quickly attach brackets and hardware to 4040 profiles. - keeps alignment consistent and helps stabilize frame assemblies. - supports common thread sizes (M4, M5, M6, M8) depending on the nut. - ideal for DIY printers and CNC frames where modular setup matters.

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