Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
When a mechanism fails because a spring loses tension or corrodes under load, the root cause is often an undersized or wrong-material spring. Engineers, makers, and repair technicians who need a reliable, dimensionally consistent compression spring will find this stainless steel spiral spring a dependable solution. The 0.45mm wire diameter suits compact assemblies where space is tight but spring force must remain predictable.
Each spring is wound from stainless steel wire with a 0.45mm diameter. Outer diameter (OD) options range from 3mm to 10mm (approx. 0.12–0.39 in), and free lengths span 5mm to 50mm (approx. 0.20–1.97 in), giving you fine-grained control over spring rate and travel. Packaged in quantities of 10 or 100 pieces to suit both prototyping and production runs.
Typical use cases include CNC machine return mechanisms requiring a compression spring 0.45mm wire stainless steel, small robotics actuator reset springs, electronic device button return springs, and precision instrument assemblies needing a corrosion-resistant spiral spring with consistent load characteristics.
Consistent wire gauge across all size variants ensures predictable spring rate and deflection behavior in compact assemblies.
Ten outer diameter options (3mm to 10mm / 0.12–0.39 in) let you match the spring to your bore or seat without custom tooling.
Ten length options from 5mm to 50mm (0.20–1.97 in) cover a broad range of travel and preload requirements in a single product family.
Stainless steel wire resists oxidation and mild corrosion, making these springs suitable for humid environments and long-term storage without surface degradation.
Available in packs of 10 (prototyping) or 100 (production), so you can order exactly what your project or assembly line requires.
Closed and ground ends provide a flat bearing surface for stable seating, reducing lateral deflection and improving load distribution in precision fixtures.
| Wire Diameter | 0.45 mm |
|---|---|
| Outer Diameter (OD) | 3 mm – 10 mm (0.12 – 0.39 in) |
| Free Length | 5 mm – 50 mm (0.20 – 1.97 in) |
| Material | Stainless Steel |
| Spring Type | Compression (Closed End) |
| Winding Direction | Right-hand (typical) |
| Surface Finish | Bright / Natural Stainless |
| Spring Rate | See variant options |
| Max Load | See variant options |
| Packaging | 10 pcs or 100 pcs per pack |
Measure the bore or housing inner diameter your spring must fit inside — the spring OD should be slightly smaller than the bore. For free length, measure the available cavity depth and subtract the desired compressed height to determine the required travel. Select the variant whose OD and free length best match those measurements.
Spring rate varies by OD and free length combination. Shorter springs with smaller OD tend to have higher rates; longer springs with larger OD have lower rates. If you need a specific spring rate value, please contact us with your OD and length selection and we can provide guidance.
Yes. The springs are made from stainless steel wire, which provides good resistance to oxidation and mild corrosion in typical indoor and moderately humid environments. For highly aggressive chemical or saltwater environments, please verify material compatibility with your specific conditions.
Yes. These compression springs are well-suited for CNC return mechanisms, robotic actuator resets, and precision instrument assemblies. The consistent 0.45mm wire diameter and closed-end winding provide stable, repeatable performance in automated systems.
Both packs contain identical springs — the only difference is quantity. The 10-piece pack is ideal for prototyping, testing, or small repairs. The 100-piece pack offers a lower per-unit cost and is suited for production runs or stocking spare parts.
The ID code in parentheses (e.g., ID:2.1) is an internal reference number used to identify the specific spring variant in our catalog. The primary dimensions you need are the wire diameter (0.45mm), the OD listed before the ID code, and the free length you select separately. Use the OD and length values for your engineering calculations.
These springs feature closed ends designed to provide a stable bearing surface. For confirmation of ground vs. closed-only ends on a specific variant, please contact us — we can verify the end finish for your selected size.
