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When a mechanism fails because a spring loses tension too quickly, or a spring is simply too large to fit the housing, engineers and makers face a frustrating rebuild cycle. These compression springs with a 1.4mm wire diameter are engineered for applications where compact geometry and consistent push-back force are non-negotiable — from electronics enclosures and instrument panels to custom jigs and consumer product prototypes.
Each spring is wound from round wire with a diameter of 1.4mm (approximately 0.055 in) and is available in outer diameters ranging from 8mm to 26mm (approx. 0.31–1.02 in). Free lengths span 15mm to 100mm (approx. 0.59–3.94 in), with quantities per pack varying by length (10 pcs for shorter lengths, 5 pcs for longer lengths). Material is spring steel, typically with a natural or lightly oiled finish to resist surface oxidation during storage.
Typical use cases include: button and switch return mechanisms in consumer electronics requiring a compact compression spring with small OD; valve and plunger assemblies in fluid-control devices needing a 1.4mm wire diameter spring for precise load control; and DIY robotics or automation fixtures where a small pressure spring must fit within a 10–26mm bore and deliver repeatable deflection across hundreds of cycles.
| Wire Diameter | 1.4mm (approx. 0.055 in) |
|---|---|
| Outer Diameter (OD) | 8mm – 26mm (see variant options) |
| Free Length | 15mm – 100mm (see variant options) |
| Material | Spring steel |
| Finish | Natural / lightly oiled |
| Coil Type | Open coil, cylindrical |
| End Type | See variant options |
| Spring Rate | See variant options |
| Quantity per Pack | 5 pcs (lengths 60–100mm) / 10 pcs (lengths 15–50mm) |
| Application | Compression / push-back mechanisms |
Measure the inner diameter of your spring housing or bore. The spring OD should be slightly smaller than the bore (typically 0.5–1mm clearance) to allow free movement without binding. If using a guide rod, the spring ID (OD minus 2× wire diameter) should clear the rod with a small gap. With a 1.4mm wire diameter, the approximate ID for each OD variant is OD minus 2.8mm.
Select a free length that is longer than your required working length. The working length equals the free length minus the desired compression travel. Ensure the compressed (solid) height — approximately wire diameter × number of coils — does not exceed your minimum clearance. If you need a specific spring rate, contact us to confirm coil count and rate for your chosen variant.
Load capacity depends on the specific OD, free length, and coil count of each variant. With a 1.4mm wire diameter and spring steel construction, these springs are suited for light-to-medium duty applications such as button returns, valve plungers, and small mechanism resets. For exact load and deflection data for a specific variant, contact us to confirm.
These springs are made from spring steel with a natural or lightly oiled finish, which provides basic protection against surface oxidation during storage and normal indoor use. They are not recommended for continuous exposure to moisture, salt spray, or corrosive chemicals. For outdoor or wet environments, consider stainless steel springs instead.
Yes. The open-coil cylindrical design is compatible with standard spring pockets and guide rods. Match the OD to your pocket bore and verify the ID clears your guide rod. The 1.4mm wire diameter is a common size for small-mechanism applications and fits within standard engineering tolerances for this spring class.
Yes. The small OD range (starting at 8mm) and fine 1.4mm wire diameter make these well-suited for electronics enclosures, keyboard mechanisms, instrument panel buttons, and similar precision applications where space is limited and consistent return force is required. Verify the specific load and travel requirements against your design before finalizing your selection.
Shorter length variants (15mm through 50mm free length) are sold in packs of 10 pieces. Longer length variants (60mm through 100mm free length) are sold in packs of 5 pieces. This packaging reflects the typical usage pattern — shorter springs are more commonly used in multiples within a single assembly, while longer springs are often used individually or in pairs.
