Brass Shaft Coupling 3mm To 3mm 4 Pack With M3 Screws For RC Cars Planes Motors Robots Durable Rigid Sleeve Adapter Transmission Joint 9mm Outer Diameter 20mm Length

Brass 3mm to 3mm Shaft Couplings, 4-Pack with M3 Screws
✔️ Brass shaft coupler, M3 screws, 9mm OD, 20mm length, 3mm bore, 4 pcs

These brass shaft couplings connect two shafts in RC models and hobby machines, delivering a rigid, secure link for motors, prop shafts, gears, and wheels. They shine in RC cars, planes, boats, and robotics where dependable torque transfer matters.

✅ Material: Brass; corrosion- and wear-resistant
✅ Thread size: M3; compatible with common hobby motors
✅ Outer diameter: 9 mm (0.354 in); length: 20 mm (0.787 in)
✅ Bore: 3 mm to 3 mm (0.118 in to 0.118 in)
✅ Pack: 4 couplers with 8 mounting screws included

💡 What is a brass shaft coupling used for in RC models and general mechanical builds? - Handy for joining two shafts of equal diameter in tight spaces - Provides a rigid, low-lash connection that handles motor torque - Common in RC cars, planes, boats, robots for connecting motors to wheels, gears - Brass offers corrosion resistance and long life in outdoor or humid setups