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When a worn-out spring causes a drawer to stick, a valve to leak, or a mechanism to lose its snap, finding the right replacement fast matters. These compression springs in spring steel are designed for makers, repair technicians, and engineers who need a dependable elastic component in a compact, precisely wound form. Whether you are restoring a household appliance or prototyping a mechanical assembly, having the correct wire diameter and free length on hand eliminates guesswork.
Each spring is wound from spring steel wire with a diameter of 0.6 mm (0.024 in). Outer diameters span 3–15 mm (0.12–0.59 in) and free lengths range from 5–100 mm (0.20–3.94 in), covering a wide spectrum of applications. Springs are available in packs of 5 or 10 pieces, letting you stock exactly what your project demands.
Typical use cases include small appliance repair (pen mechanisms, clicker buttons, battery contacts), light-load valve and actuator assemblies requiring a consistent return force, and electronics or sensor housings where a miniature compression spring for DIY projects keeps components seated under vibration.
Wound from spring steel wire for consistent elastic modulus and reliable return force across repeated compression cycles.
Fine 0.6 mm (0.024 in) wire diameter enables compact coil geometry suited to tight housings and miniature mechanisms.
OD from 3–15 mm and free length from 5–100 mm — select the exact combination for your application without custom fabrication.
Uniform coil spacing ensures even load distribution along the spring axis, reducing lateral buckling under compression.
Choose the pack size that fits your project — single repairs or batch builds — without over-ordering.
Ideal for pen mechanisms, battery contacts, valve returns, sensor housings, and light-load actuator assemblies across electronics and mechanical DIY projects.
| Material | Spring Steel |
|---|---|
| Wire Diameter | 0.6 mm (0.024 in) |
| Outer Diameter (OD) | 3 mm – 15 mm (0.12 in – 0.59 in) |
| Free Length | 5 mm – 100 mm (0.20 in – 3.94 in) |
| Spring Type | Compression (closed / ground ends typical) |
| End Style | See variant options |
| Surface Finish | See variant options |
| Load Capacity | See variant options |
| Spring Rate | See variant options |
| Pack Quantity | 5 Pcs or 10 Pcs (select above) |
Measure the inner diameter of the housing or bore the spring will sit inside. The spring OD should be slightly smaller than the bore — typically 0.2–0.5 mm clearance — to allow free movement without binding. If the spring rides on a shaft, the shaft OD should be smaller than the spring inner diameter (OD minus 2× wire diameter).
The free length is the uncompressed length of the spring. Choose a free length longer than your required working length so the spring remains under compression in its installed position. As a starting point, the free length is typically 1.2–1.5× the desired working (compressed) length for light-load applications.
With a 0.6 mm wire diameter, these are light-duty springs suited for low-load applications such as pen mechanisms, battery contacts, small valves, and sensor retention. They are not designed for heavy industrial loads. Exact spring rate depends on the OD and free length of the specific variant — contact us to confirm if you have a specific load requirement.
Spring steel offers moderate corrosion resistance suitable for indoor and dry environments. For applications exposed to moisture, chemicals, or salt spray, consider adding a protective coating or selecting a stainless steel spring instead. If you need stainless steel variants, please contact us.
Yes. The 0.6 mm wire diameter and small OD options (3–6 mm) make these compression springs well suited for battery contact springs, push-button mechanisms, and component retention in PCB housings. Ensure the spring material is compatible with any conformal coating or cleaning solvents used in your assembly process.
If you are doing a single repair or prototype, the 5-piece pack gives you spares without excess. For batch production, recurring maintenance, or if you are testing multiple sizes, the 10-piece pack offers better value per unit. Both pack sizes contain identical springs — only the quantity differs.
Use a digital caliper to measure: (1) wire diameter — the thickness of the wire itself; (2) outer diameter — the widest point of the coil; (3) free length — the total uncompressed length. Match these three measurements to the variant options above. If your existing spring is slightly compressed or deformed, measure the wire diameter and OD first, then estimate the free length from the housing depth.
