Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
When a worn-out spring causes a mechanism to fail — whether it's a valve, a latch, a tool, or a precision instrument — finding the exact replacement size quickly matters. These stainless steel compression springs are designed for makers, engineers, and DIY enthusiasts who need reliable, corrosion-resistant springs in a wide range of sizes without ordering in bulk.
Each spring is made from stainless steel wire with a diameter of 0.7mm (approximately 0.028 in). The outer diameter (OD) ranges from 4mm to 12mm (approx. 0.16–0.47 in), and free lengths span from 5mm to 120mm (approx. 0.20–4.72 in). Springs are available in packs of 5 or 10 pieces depending on the size selected.
These compression springs suit a broad range of applications: replacing springs in electronic enclosures and battery contacts, providing return force in DIY jigs and fixtures, and acting as cushioning elements in light mechanical assemblies. Their stainless steel construction makes them well-suited for environments with moisture exposure, such as outdoor equipment, marine accessories, and kitchen or bathroom hardware projects.
Made from stainless steel wire for corrosion resistance in humid, wet, or outdoor environments.
Wire dia 0.7mm, OD 4–12mm, free length 5–120mm — covers a broad spectrum of replacement and project needs.
Available in packs of 5 or 10 pieces. Order exactly what your project requires without excess waste.
Uniform wire diameter and coil geometry ensure repeatable compression force across the full length range.
Ideal for electronics, battery contacts, latches, valves, jigs, fixtures, and light mechanical assemblies.
Each variant is clearly labeled by OD and inner diameter (ID) so you can match your existing spring with confidence.
| Material | Stainless Steel |
|---|---|
| Wire Diameter | 0.7mm (approx. 0.028 in) |
| Outer Diameter (OD) | 4mm – 12mm (approx. 0.16–0.47 in) |
| Inner Diameter (ID) | 2.6mm – 10.6mm (see variant options) |
| Free Length | 5mm – 120mm (approx. 0.20–4.72 in) |
| Spring Type | Compression |
| End Type | See variant options |
| Surface Finish | Natural stainless (no coating) |
| Packaging | 5 pcs or 10 pcs (varies by size) |
| Spring Rate | See variant options |
Measure the outer diameter (OD) and free length of your existing spring with calipers. Match the OD first — it must fit inside the housing or bore without binding. Then select the free length closest to your original. The inner diameter (ID) is listed in each variant name (e.g., "ID:2.6" for the 4mm OD spring) to help you verify shaft clearance.
The wire diameter is 0.7mm for all variants in this listing. Wire diameter directly affects the spring rate (stiffness) — a thicker wire produces a stiffer spring. If your application requires a different spring rate, you may need a different wire diameter. For light-duty applications such as battery contacts, latches, and small valves, 0.7mm wire is a common and practical choice.
Yes. These springs are made from stainless steel, which provides good resistance to rust and oxidation in humid, wet, and mildly corrosive environments. They are suitable for outdoor equipment, bathroom hardware, marine accessories, and similar applications where standard carbon steel springs would corrode quickly.
These are general-purpose compression springs suitable for a wide range of DIY and light industrial uses: battery compartment contacts, pen mechanisms, valve return springs, tool latches, jig fixtures, electronic enclosures, and small mechanical assemblies. Always verify the OD, ID, wire diameter, and free length match your specific application before ordering.
Pack quantity depends on the size selected. Shorter lengths (typically 5–50mm) are available in packs of 10 pieces. Longer lengths (typically 55–120mm) are available in packs of 5 pieces. The packaging quantity is shown as the third option ("Packaging (pcs)") when selecting your variant.
Standard stainless steel springs perform well at moderate temperatures. For applications involving sustained high heat (above approximately 150°C / 300°F), the spring rate and material properties may be affected. If your application involves elevated temperatures, please contact us to confirm suitability before ordering.
OD (Outer Diameter) is the overall outside width of the spring coil. ID (Inner Diameter) is the inside bore of the spring — the space available for a shaft or guide pin. For example, "0.7 x 4mm (ID:2.6)" means wire diameter 0.7mm, OD 4mm, and ID approximately 2.6mm. Use the ID to check that the spring will clear any shaft it slides over.
