Galvanized Ballpoint Pen Spring Set For Smooth Writing And Quick Pen Fix, 0.016 Inch Wire Diameter, Outer Diameter 0.18 Inch, Length 0.7 Inch, Inner Diameter 0.15 Inch, 100-Piece Pack, Replacement Compression Springs For Pens

Premium galvanized springs for ballpoint pen repair
✔️ 0.4 mm wire, 18 mm long, 4.5 mm outer diameter; 100 pcs

These compression springs are galvanized steel components sized for ballpoint pens and other small devices. Ideal for quick pen repairs and hobby projects, plus light industrial fixes in homes, shops, and classrooms.

✅ Wire diameter: 0.4 mm (0.016 in); outer diameter: 4.5 mm (0.18 in)
✅ Length: 18 mm (0.7 in); inner diameter: 3.8 mm (0.15 in)
✅ Material: galvanized steel, silver-tone finish
✅ Pack: 100 pieces ±2% per pack

💡 What is a compression spring used for in everyday items?

These handy springs power smooth action and return mechanisms in many small tools and devices.

- Ballpoint pen repairs and replacements - Small toys and gadgets with spring-loaded features - Light-duty hardware in homes and offices