Ten Pack 4mm Bore Shaft Collars With Set Screws Stainless 304 Steel 9mm OD 7mm Thick Kickin Wheel Stopper And Landing Gear Collar For Shafts Positioning Spacing Stops Bearings

Ten-Pack 4mm Bore Shaft Collars with Set Screws, 9mm OD
✔️ 9mm outer diameter, 7mm thick, 4mm bore, 304 stainless steel

These shaft collars in 304 stainless steel lock onto shafts to act as positioners, spacers, stops, and bearing surfaces. They’re a handy choice for securing gears, pulleys, or other components in robotics, RC planes, automotive projects, and general machinery.

✅ Bore: 4mm for precise shaft mounting
✅ Outer diameter: 9mm; thickness: 7mm
✅ Material: 304 stainless steel; corrosion resistant
✅ Set-screw collar design provides secure lock on shaft
✅ Pack size: Ten pieces (Ten Pack) for consistent assemblies

💡 What is a pillow block bearing used for? Here's a handy, general guide that applies to many similar parts.

Here's a handy intro for common uses in mechanical assemblies.

- Supports rotating shafts and helps align components
- Provides secure attachment to prevent slipping under load
- Easy installation with set screws for quick field adjustments
- Suited for robotics, RC models, and automated hobby projects