Brass Shaft Coupling 4mm To 5mm Kit With 8 Couplers 16 Screws And Spanner Rigid Sleeve Adapters For RC Cars Motors 9mm OD 20mm Length M3 Threads Rust Proof Wear Resistant

Brass Shaft Coupling Kit for 4-5 mm shafts, 8 couplers
✔️ Brass shaft couplers: M3 threads, 9 mm OD, 20 mm long, 4-5 mm bore

This brass shaft coupling kit is designed for RC models and light mechanical drives. It connects motor shafts to hex wheels in RC cars, planes, boats, and robots. The set includes 8 shaft couplers, 16 screws, and 1 spanner for quick assembly.

✅ Material: Brass
✅ Thread size: M3
✅ Outer diameter: 9 mm (0.3 in)
✅ Length: 20 mm (0.7 in)
✅ Inner diameter range: 4-5 mm (0.15-0.19 in)
✅ Packing: 8 shaft couplers, 16 screws, 1 spanner
✅ Note: Rigid type; no eccentricity; must be fully adjusted during use

💡 What is a shaft coupling used for in basic mechanical systems?

Handy for joining rotating shafts in tight spaces while keeping torque steady.

- Supports precise torque transfer in RC drives - Connects motor shafts to gears or wheels in RC models - Brass rigid sleeve resists corrosion and wear for long life