Rigid shaft coupling 1/8 in to 1/8 in with set screws delivers precise torque transfer with minimal deflection, aluminum alloy body, 20 mm length, 10 mm OD, 3.175 mm bore on both ends, ideal for compact 3D printers and CNC builds

Single-piece rigid shaft coupling 1/8 in to 1/8 in, screws
✔️ 20 mm length, 10 mm OD, 3.175 mm bore on both ends, M3 screws

This rigid shaft coupling with 1/8 in bores on both ends locks onto shafts to transfer torque without flex. It’s a compact, aluminum alloy piece perfect for 3D printers, CNC machines, blowers, and DIY robotics.

✅ Bore: 1/8 in (3.175 mm) on each end
✅ Outer diameter: 10 mm (0.39 in)
✅ Total length: 20 mm (0.79 in)
✅ Material: Aluminum alloy
✅ Screws: M3 set screws included; top-tight clamp design

💡 What is a shaft coupling used for in small mechanical systems?
This handy explanation covers the basics of how they transfer torque and keep parts aligned in compact setups.
- Transmits torque between shafts in CNC machines, 3D printers, and DIY robots
- Keeps alignment in tight spaces with a rigid aluminum alloy clamp
- Simple clamp design allows quick setup and reliable, low-lag performance