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When a failed spring causes a mechanism to jam, a valve to stick, or a latch to misfire, the root cause is often an undersized or corrosion-weakened component. Engineers, hobbyists, and repair technicians who need a dependable small compression spring with consistent load characteristics will find this 1.4mm wire diameter option a practical, long-lasting solution.
Each spring is formed from 304 stainless steel wire with a diameter of 1.4mm (approximately 0.055 in). Outer diameters span 8–22mm (approx. 0.31–0.87 in) and free lengths range from 10–50mm (approx. 0.39–1.97 in), covering a broad range of fitment requirements. Springs are available in packs of 10 or 100 pieces to suit both prototyping and production runs.
Typical use cases include electronic device button mechanisms requiring a small compression spring for tactile feedback, automotive and appliance valve assemblies needing a stainless steel pressure spring rated for moderate loads, and DIY jig or fixture builds where a corrosion-resistant small coil spring must maintain consistent force over repeated cycles.
| Material | 304 Stainless Steel |
|---|---|
| Wire Diameter | 1.4mm (approx. 0.055 in) |
| Outer Diameter (OD) | 8mm – 22mm (approx. 0.31 – 0.87 in) — See variant options |
| Free Length | 10mm – 50mm (approx. 0.39 – 1.97 in) — See variant options |
| End Type | Closed ends (typical for this wire diameter range) |
| Spring Rate | See variant options |
| Surface Finish | Natural stainless (no coating) |
| Packing Quantity | 10 pcs or 100 pcs — See variant options |
| Operating Temperature | Typically –20°C to +200°C (–4°F to +392°F) |
| Corrosion Resistance | Good — suitable for humid and mildly corrosive environments |
Measure the bore or housing inner diameter where the spring will sit — the spring's outer diameter should be 0.5–1.5mm smaller than the bore for a guided fit. For free length, select a spring whose free length is longer than your required compressed length plus the desired preload travel. Use the variant selector above to browse all available OD and length combinations.
Spring rate depends on wire diameter, outer diameter, free length, and number of active coils. A 1.4mm wire diameter spring is suited for light-to-moderate loads, typically in the range of a few Newtons to tens of Newtons depending on the specific geometry. If you need a confirmed spring rate for a critical application, contact us with your OD and length selection for further guidance.
Yes. 304 stainless steel provides good resistance to atmospheric corrosion, fresh water, and mild chemical exposure. It is not recommended for prolonged immersion in chloride-rich environments (e.g., seawater) — for those conditions, 316 stainless steel is preferred. For most indoor, outdoor, and light industrial uses, 304 is a reliable choice.
304 stainless steel retains adequate mechanical properties up to approximately 200°C (392°F) for intermittent use. For continuous high-temperature service above this range, consider high-temperature alloy springs. For most appliance, automotive underhood, and electronics applications, these springs perform reliably within their rated temperature window.
Yes, provided the guide rod diameter is smaller than the spring's inner diameter (ID = OD minus 2× wire diameter). For example, a spring with 10mm OD and 1.4mm wire has an approximate ID of 7.2mm, so a guide rod up to ~6.5mm diameter is suitable. Always verify clearance for your specific variant before assembly.
Both pack sizes contain identical springs — the only difference is quantity. The 10-piece pack is ideal for prototyping, repair, or low-volume builds. The 100-piece pack offers a lower per-unit cost and is suited for production runs, maintenance stock, or bulk assembly work. Select your preferred quantity in the variant options above.
Buckling risk increases when the free length-to-outer-diameter ratio exceeds approximately 4:1. For springs in this range (e.g., 50mm free length with 8mm OD = ratio of 6.25), use a guide rod or bore to constrain lateral movement. Shorter springs or those with larger OD relative to length are inherently more stable without guidance.
