Black Oxide Plated Mild Steel Rigid Coupling With Five Eighths Inch Bore, One And One Quarter Inch OD, Two Inch Length, Five Sixteenths Inch By Eighteen Thread Set Screws For No-Fuss Installation And Easy Torque Transmission And Alignment

Rigid 5/8 Bore Steel Coupling for Easy Torque Transfer
✔️ 1pc, bore 5/8 in, OD 1.25 in, length 2 in, 5/16-18 screws

Black oxide coated mild steel rigid coupling designed for simple, no-fuss installation. Ideal for drive shafts and hobby machines where quick torque transmission and precise alignment are needed.

✅ Bore: 5/8 in (15.9 mm)
✅ Outer diameter: 1.25 in (31.8 mm)
✅ Length: 2.0 in (50.8 mm)
✅ Thread: 5/16-18 UNC
✅ Finish: Black oxide on mild steel

💡 What is a rigid coupling used for in small machinery? Handy connector that transmits torque between shafts while keeping alignment. 1) Useful for quick motor-to-shaft connections in compact drives.
2) Helps maintain straight torque path and reduces vibration during operation.
3) Ideal for hobbyists and small machine builders needing reliable torque transfer.