Rigid shaft coupler with a 3/4 bore, 1-1/2 inch outer diameter, 2 inch length, and 5/16-18 set screws in black oxide steel, delivering precise shaft alignment and reliable power transfer for small machinery, robotics, and workshop setups

Rigid Shaft Coupler: 3/4 Bore, 2in Length, 1 pc Black Oxide
✔️ 3/4 bore, 1-1/2 OD, 2 in length, 5/16-18 set screws

The rigid shaft coupler is a compact, cost-efficient piece designed to join two shafts while keeping them aligned. It's commonly used in small machinery, robots, and workshop setups where quick, dependable torque transfer is needed without heavy disassembly.

✅ Rigid design transfers torque between two shafts with fixed alignment
✅ 3/4 in bore and 1-1/2 in OD fit compact drive setups
✅ 2 in overall length with 5/16-18 x 3/8 in set screws
✅ Black oxide finish provides mild corrosion resistance

💡 What is a rigid shaft coupler used for in simple mechanical setups? It's a handy way to connect two shafts to transfer torque with fixed alignment.

- handy for linking small motors to gearboxes without extra alignment shims - keeps shafts locked together under rotation when set screws are tightened - works with common bore sizes like 3/4 in and OD around 1-1/2 in