Pack Of 100 Heavy Duty Galvanized Steel Wire Compression Springs For Ballpoint Pens, 0.4mm Wire Diameter, 4mm Outer Diameter, 25mm Length, Zinc Plated, Replacement Springs For DIY Projects

100-Pack Heavy Duty Galvanized Steel Spring Set
✔️ 0.4mm wire; 4mm OD; 25mm length; zinc plated; 100 pcs

These heavy-duty galvanized steel compression springs come in a 100-piece pack and are ready to tackle small mechanical tasks. Primarily used in ballpoint pen mechanisms and DIY projects that need dependable tension and corrosion resistance.

✅ Material: galvanized steel
✅ Outer diameter: 4 mm
✅ Wire diameter: 0.4 mm
✅ Free length: 25 mm
✅ Pack size: 100 springs

💡 What is a heavy-duty galvanized steel compression spring used for in DIY projects?

- Handy for small devices needing reliable return force - Useful in pen mechanisms, latches, and light machinery - Zinc-coated for corrosion resistance and longer life - Fits compact spaces with a 25 mm length