20 Pack Set Screw Shaft Collars 4.05mm Bore 9mm Outside Diameter 5mm Wide Nickel Plated Carbon Steel Drill Stop Collar For Shafts Positioners Spacers Bearings

20-Pack Set Screw Shaft Collars, 4.05mm Bore, 9mm OD

✔️ Nickel-plated carbon steel, 4.05mm bore, 9mm OD, 5mm wide

These 20-pack set screw shaft collars grab onto shafts to hold components in place, position items precisely, and act as reliable stops. They’re commonly used in automation, robotics, automotive projects, RC models, 3D printers, and other machinery to secure gears, pulleys, and bearings.

✅ Material: nickel-plated carbon steel for high strength and corrosion resistance.
✅ Bore: 4.05 mm to fit standard shafts.
✅ Outside diameter: 9 mm; Width: 5 mm.
✅ Set screw design provides secure locking on shafts.
✅ Pack size: 20 pieces per set for bulk use.

💡 What is a shaft collar used for in mechanical systems? This handy piece helps lock components to shafts and set precise positions.
- secure components on shafts with a set screw
- act as spacers, stops, or bearing surfaces
- durable nickel-plated carbon steel resists corrosion
- easy installation with a hex wrench