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When a loose mechanism, a rattling assembly, or a failed return stroke brings your project to a halt, the right compression spring makes all the difference. These 1.6 mm wire diameter compression springs are designed for hobbyists, engineers, and repair technicians who need consistent spring force in compact spaces — without sourcing from industrial minimums.
Each compression spring is formed from steel wire with a wire diameter of 1.6 mm (0.063 in). Outer diameters range from 9 mm to 28 mm (0.35 in – 1.10 in), and free lengths span 15 mm to 100 mm (0.59 in – 3.94 in). Springs are available in packs of 5 or 10 pieces, with a closed-end coil construction typical of standard compression spring designs.
These compression springs suit a wide range of use cases: replacing worn return springs in mechanical assemblies, adding spring-loaded tension to DIY jigs and fixtures, prototyping spring-actuated mechanisms, and maintaining consistent clamping or separation force in custom enclosures. Long-tail applications include small compression spring for electronics enclosure, coil spring for 3D printer bed leveling, and steel return spring for tool repair.
Consistent 1.6 mm wire cross-section across all variants for predictable spring rate and reliable coil geometry in tight-tolerance assemblies.
Outer diameters from 9 mm to 28 mm and free lengths from 15 mm to 100 mm give you the flexibility to match your exact housing bore and stroke requirement.
Formed from steel wire for structural integrity under repeated compression cycles — suitable for mechanical return, clamping, and separation functions.
Choose a 5-piece or 10-piece pack depending on your project quantity — ideal for prototyping, repair stock, or small-batch production runs.
Closed ends provide a flat bearing surface for stable seating against spring pockets, plungers, and flat retaining surfaces without additional hardware.
Small outer diameters starting at 9 mm make these compression springs well-suited for electronics enclosures, pen mechanisms, small actuators, and precision DIY fixtures.
| Wire Diameter | 1.6 mm (0.063 in) |
|---|---|
| Outer Diameter | 9 mm – 28 mm (0.35 in – 1.10 in) |
| Free Length | 15 mm – 100 mm (0.59 in – 3.94 in) |
| Material | Steel |
| End Type | Closed ends |
| Spring Type | Compression |
| Pack Quantity | 5 pcs or 10 pcs (see variant options) |
| Spring Rate | See variant options |
| Surface Finish | See variant options |
| Load Capacity | See variant options |
Measure the inner diameter of the bore or housing where the spring will sit. The spring's outer diameter should be slightly smaller than the bore to allow free movement without binding. For a shaft-guided spring, the inner diameter of the spring should be slightly larger than the shaft. Use the Wiredia × Outerdia variant selector to find the combination that fits your assembly.
The free length is the uncompressed length of the spring. Select a free length that is longer than your required compressed length plus your desired travel (stroke). For example, if you need 20 mm of travel and the spring will be compressed to 30 mm, choose a free length of at least 50 mm. Available lengths range from 15 mm to 100 mm.
These springs are formed from steel wire with a 1.6 mm diameter, making them suitable for light to moderate mechanical loads — including return springs, clamping mechanisms, and spring-loaded latches. For heavy-duty industrial loads requiring specific spring rates or load ratings, please contact us to confirm suitability before ordering.
These springs are made from steel wire. Standard steel offers good mechanical properties but limited corrosion resistance in wet or chemically aggressive environments. For outdoor or humid applications, consider applying a protective coating after installation, or contact us to confirm if a coated variant is available for your size.
Yes. The smaller outer diameter options (9 mm – 13 mm) are well-suited for electronics enclosures, pen mechanisms, 3D printer bed leveling assemblies, and similar precision DIY applications. Select the outer diameter and free length that match your design's spring pocket and stroke requirements.
Both pack options contain identical springs — the only difference is quantity. The 10-piece pack is available for shorter lengths (15 mm – 50 mm), while the 5-piece pack covers longer lengths (60 mm – 100 mm). Choose based on your project quantity needs and the length variant you require.
Measure three dimensions: (1) wire diameter using calipers — this product is 1.6 mm; (2) outer diameter of the coil body; (3) free length (uncompressed). Match all three to the variant options listed. If your existing spring is worn or deformed, measure the housing bore for outer diameter reference and the available travel space for free length guidance.
