4 mm 0.16 Inch 304 Stainless Steel Bearing Balls 100 Pcs Precision G100 Solid Balls For CNC, DIY Projects, Robotics And Machinery With Pro Grade Finish, Ultra Smooth, Corrosion Resistant

Precision 4mm Diameter 304 Stainless Bearing Balls, 100 Pcs
✔️ 4 mm diameter, 304 stainless steel, corrosion resistant, 100 pcs

These precision-ground 4 mm stainless steel bearing balls are built from 304 stainless steel to resist corrosion and handle low-temperature strength. They’re packaged as a 100-piece set, ideal for CNC, robotics, and DIY projects requiring consistent ball size and smooth rotation.

✅ Size: 4 mm (0.16 in) diameter
✅ Material: 304 stainless steel for corrosion resistance
✅ Finish: ultra-smooth, precision-ground surface
✅ Tolerance: tight tolerance for consistent performance
✅ Pack: 100 pieces per pack, ready for immediate use
✅ Applications: suitable for bearings, valves, sprayers, drawers, and semi-precision components

💡 What are precision bearing balls used for in mechanical assemblies?

They’re handy tiny parts that cut friction and keep motion smooth. - Ideal for high-precision bearing assemblies and motion-control components - Handy for CNC parts, robotics joints, valve systems, and drawer slides - Works with sealed ball bearing and linear slide unit setups in DIY projects