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When a mechanism fails because a spring loses tension, corrodes, or simply doesn't fit, the whole assembly stops working. Engineers, machinists, and serious DIYers who need a dependable, dimensionally consistent compression spring in 1.0mm wire diameter will find this range covers the most common outer-diameter and free-length combinations in a single listing.
Each spring is formed from 304 stainless steel wire with a nominal diameter of 1.0mm (0.039 in). Outer diameters span 6mm–18mm (0.24–0.71 in) and free lengths run from 10mm up to 305mm (0.39–12.0 in), with closed and ground ends for stable seating. Packing options of 1, 5, or 10 pieces let you order exactly what a job requires.
Typical applications include light-load return mechanisms in jigs and fixtures, valve and plunger assemblies in fluid-handling equipment, electronic enclosure latches, and precision instrument components where corrosion resistance is non-negotiable.
Resists oxidation, mild acids, and humidity — suitable for both indoor mechanisms and lightly exposed outdoor assemblies.
Consistent wire gauge across all size variants ensures predictable spring rate and deflection behaviour for light-to-medium load applications.
OD from 6mm to 18mm, free length from 10mm to 305mm — covers the most common small-spring requirements without sourcing from multiple suppliers.
Closed (and typically ground) end coils sit flat against mating surfaces, reducing lateral shift and improving load distribution in confined housings.
Choose 1, 5, or 10 pieces per order — ideal for prototyping single units, stocking a small batch, or keeping spares on the bench.
Used in return mechanisms, valve assemblies, instrument components, electronic latches, and DIY jig-and-fixture builds requiring corrosion-resistant springs.
| Material | 304 Stainless Steel |
|---|---|
| Wire Diameter | 1.0mm (0.039 in) |
| Outer Diameter | 6mm – 18mm (0.24 – 0.71 in) — see variant options |
| Free Length | 10mm – 305mm (0.39 – 12.0 in) — see variant options |
| End Type | Closed ends (ground finish typical) |
| Spring Rate | See variant options |
| Surface Finish | Bright / natural stainless |
| Coil Direction | Right-hand wound |
| Pack Quantity | 1 pcs / 5 pcs / 10 pcs — see variant options |
| Corrosion Resistance | Suitable for general indoor and lightly exposed environments |
Match the outer diameter (OD) to your bore or housing ID, leaving a small clearance (typically 0.5–1mm). Select a free length longer than your required working length so the spring has room to compress. For load requirements, compare the spring rate of your chosen size against the force needed at your target deflection.
A 1.0mm wire diameter spring is designed for light-to-medium loads. Exact load capacity depends on the outer diameter, free length, and number of active coils — all of which vary by size variant. For precise spring-rate data, contact us with your selected size and we can provide further guidance.
304 stainless steel offers good resistance to oxidation and mild corrosion, making it suitable for lightly exposed outdoor use and humid indoor environments. For highly corrosive or marine environments, 316 stainless steel would be a stronger choice. These springs are not recommended for prolonged immersion in chloride-rich solutions.
All three packing quantities contain the same spring in the same size — only the number of pieces per order differs. The 10-pcs pack offers the lowest per-unit cost and is ideal for batch builds or keeping spares. The 5-pcs pack suits small projects, and the 1-pcs option is best for prototyping or single replacements.
Yes. The closed ends provide a flat seating surface compatible with standard spring seats and guide rods. Ensure the guide rod diameter is smaller than the spring's inner diameter (ID = OD minus 2× wire diameter, so approximately OD − 2mm for this range) to allow free movement without binding.
304 stainless steel retains reasonable mechanical properties up to approximately 300°C (572°F) for intermittent use. For continuous high-temperature service above this range, a high-temperature alloy spring would be more appropriate. Contact us to confirm suitability for your specific operating conditions.
Spring rate depends on wire diameter, outer diameter, free length, and number of active coils. If you need a specific spring rate for your application, please contact us with your selected size variant and we will provide the calculated rate or direct you to the closest match in our range.
