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When a project demands consistent return force and dimensional accuracy, undersized or mismatched springs cause costly failures. Engineers, hobbyists, and maintenance technicians who work with mechanical assemblies, jigs, fixtures, and automation equipment need compression springs they can spec with confidence — and receive in the exact size they ordered.
These compression springs feature a 1.8mm wire diameter, manufactured from spring steel. Outer diameter (OD) ranges from 10mm to 30mm (approx. 0.39–1.18 in), and free length ranges from 15mm to 50mm (approx. 0.59–1.97 in). Each listing is sold in a set of 10 pieces, making them suitable for both prototyping and small-batch production runs.
Typical use cases include compression spring replacements in mechanical presses and clamping fixtures, return-force elements in DIY automation and robotics builds, and load-bearing spring seats in custom enclosures — all scenarios where a 1.8mm wire diameter spring steel compression spring delivers repeatable, measurable performance.
Consistent wire cross-section across all size variants for predictable load-deflection behavior in mechanical assemblies.
Spring steel offers solid elastic memory and fatigue resistance for cyclic compression applications in mechanical and industrial environments.
OD from 10mm to 30mm and free length from 15mm to 50mm — select the exact combination your design requires without custom fabrication.
Each order ships as a 10-piece set, giving you spares for prototyping, testing, and replacement without over-ordering bulk quantities.
Standard closed-end geometry provides flat seating surfaces for stable load transfer in spring seats and bored housings.
Uniform coil spacing across the free length ensures even load distribution and reduces the risk of lateral buckling under compression.
| Wire Diameter | 1.8 mm (0.071 in) |
|---|---|
| Outer Diameter (OD) | 10–30 mm (0.39–1.18 in) — See variant options |
| Free Length | 15–50 mm (0.59–1.97 in) — See variant options |
| Material | Spring Steel |
| End Type | Closed (typical for this wire/OD range) |
| Surface Finish | See variant options |
| Spring Rate | See variant options |
| Max Load Capacity | See variant options |
| Quantity per Set | 10 Pieces |
| Coil Direction | Right-hand (typical) |
Measure the bore or spring seat inner diameter in your assembly — the spring OD should be 0.5–1.5mm smaller than the bore for a sliding fit. For free length, select a spring that is longer than your required compressed length to ensure adequate working travel. Use the variant selector above to match Wire Dia × OD × Length to your design spec.
Load capacity depends on OD, free length, and number of active coils — all of which vary by variant. As a conservative estimate, 1.8mm wire spring steel compression springs in this OD range typically handle light-to-medium loads (generally under 50N at moderate deflection). For precise spring rate and load data, contact us to confirm for your selected variant.
Spring steel provides solid mechanical performance but has limited inherent corrosion resistance compared to stainless steel. For indoor, dry, or lightly humid environments these springs perform reliably. For wet, outdoor, or chemically aggressive environments, consider applying a protective coating or selecting a stainless steel spring variant.
These springs are suited for mechanical presses, clamping fixtures, return mechanisms, DIY robotics, automation jigs, drawer slides, valve assemblies, and general-purpose spring seats where an OD of 10–30mm and free length of 15–50mm fits the design envelope. Always verify OD, free length, and spring rate against your specific application requirements.
A larger OD at the same wire diameter generally produces a lower spring rate (softer spring), while a smaller OD produces a higher spring rate (stiffer spring). If your application requires a specific force at a given deflection, calculate the required spring rate first, then select the OD and length combination that meets it. Use the variant dropdown to browse all available combinations.
Spring steel compression springs in this wire diameter range are suitable for moderate-cycle applications. For high-cycle fatigue environments (millions of cycles), shot-peened or pre-set springs are typically recommended. If your application involves continuous high-frequency cycling, contact us to confirm suitability before ordering.
For springs in this wire diameter and OD range, closed ends are standard. Ground ends (flat-ground seating surfaces) are typical for springs requiring precise load transfer and stable seating. Contact us to confirm the exact end treatment for your selected variant if this is critical to your application.
