Five Pack 5Mm To 6Mm Bore Rigid Brass Shaft Coupling Motor Connector For Precise Machine Linkage Beefy Fit Premium Quality Shaft Joint For 3D Printers Diy RC Cars Boats And Hardware Projects L20Xd9

Five-Pack Brass Shaft Couplings for 5-6 mm Shafts
✔️ Brass rigid shaft couplings, 5-6 mm bore, 20x9mm with M3 screws

These brass shaft couplings are rigid, high-strength joints designed to connect motors to compatible shafts in small machines. They’re ideal for 3D printers, RC models, boats, and hardware drives where precise, secure alignment matters.

✅ Brass construction for high strength, corrosion resistance
✅ Bore range: 5 mm to 6 mm compatible shafts; Total length 20 mm (0.79 in); Outside diameter 9 mm (0.35 in)
✅ Includes M3 screws for quick mounting
✅ Rigid coupling with low backlash and high torque handling
✅ Suitable for 3D printers, RC models, boats, and hardware drives
✅ Note: rigid type requires proper alignment and no eccentricity during use

💡 What is a brass shaft coupling used for in hobby machines like 3D printers and RC models?

A handy, compact way to join two shafts with secure fit and minimal backlash.

- Connects motor shafts to other shafts with a tight, backlash-minimized fit - Handles high torque while maintaining alignment in small drives - Works with standard 5-6 mm bore shafts and M3 mounting hardware