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When your project demands reliable spring force in a confined space, standard springs simply won't fit. Engineers, hobbyists, and repair technicians working on electronics, precision instruments, and miniature mechanisms need a compression spring that delivers consistent load without taking up valuable room. These micro miniature compression springs with a 0.6 mm wire diameter are engineered for exactly those demanding, space-critical applications.
Each spring is formed from 0.6 mm wire diameter steel, with outer diameters ranging from 4 mm to 12 mm (approximately 0.16 in to 0.47 in) and free lengths spanning 5 mm to 100 mm (approximately 0.20 in to 3.94 in). The coil geometry provides a consistent spring rate across the full compression range, and the smooth surface finish reduces friction during repeated cycling.
Typical use cases include miniature switch mechanisms and tactile button assemblies, precision pen and stylus retraction systems, and small-scale robotics or sensor-mounting fixtures requiring controlled preload. Whether you are sourcing micro compression springs for electronics repair, miniature compression spring replacements for instruments, or small coil springs for DIY mechanisms, this range covers the most common sizes in one listing.
Fine wire gauge enables use in the tightest housings and miniature mechanisms where standard springs cannot fit.
Outer diameters from 4 mm to 12 mm and free lengths from 5 mm to 100 mm cover a broad spectrum of micro spring applications in a single listing.
Uniform coil pitch delivers repeatable force across the full compression stroke, critical for precision actuation and reliable return force.
Designed for repeated compression cycles without permanent set, maintaining dimensional stability over extended service life.
Reduces friction against housing walls during cycling, protecting both the spring and the surrounding components from premature wear.
Shorter lengths ship in packs of 10 pcs; longer lengths (60 mm and above) ship in packs of 5 pcs — sized for prototyping and small-batch production runs.
| Wire Diameter | 0.6 mm |
|---|---|
| Outer Diameter (OD) | 4 mm – 12 mm (0.16 in – 0.47 in) |
| Free Length | 5 mm – 100 mm (0.20 in – 3.94 in) |
| Material | Steel (spring-grade wire) |
| Spring Type | Compression (closed ends, ground or plain) |
| Surface Finish | Smooth, bare metal |
| Spring Rate | See variant options |
| Max Load Capacity | See variant options |
| Pack Quantity | 10 pcs (lengths 5–50 mm) / 5 pcs (lengths 60–100 mm) |
| Coil Direction | Right-hand |
Measure the inner diameter of the housing or bore that will contain the spring. The spring's outer diameter should be slightly smaller than the bore — typically 0.1 mm to 0.3 mm clearance — to allow free movement without binding. For a shaft-guided spring, the inner diameter of the spring (OD minus twice the wire diameter) should be slightly larger than the shaft.
Select a free length that is longer than your required working length. The spring must not be compressed to solid height (coil bind) during normal operation. A common guideline is to allow at least 15–20% of the free length as travel margin above solid height. Measure your available travel in the mechanism and choose accordingly.
With a 0.6 mm wire diameter, these are light-duty springs suited for low-load applications such as button return, pen retraction, sensor preload, and miniature switch actuation. They are not intended for heavy industrial clamping or high-load structural applications. Exact spring rates vary by OD and length — contact us if you need specific load data for your variant.
These springs are made from bare steel wire and are not coated or plated. They are suitable for dry indoor environments. For applications involving moisture, mild chemicals, or outdoor exposure, consider adding a protective coating after installation, or contact us to inquire about alternative material options.
Yes — the 4 mm to 12 mm OD range and 5 mm to 100 mm length range cover the most common miniature spring seats found in retractable pens, tactile switches, precision instruments, and small robotics assemblies. Always verify the specific OD and free length against your component's spring seat dimensions before ordering.
Pack quantity depends on the length variant selected. Springs with free lengths from 5 mm to 50 mm are supplied in packs of 10 pieces. Springs with free lengths from 60 mm to 100 mm are supplied in packs of 5 pieces. The quantity is shown in the variant name (e.g., "20mm & 10pcs").
Yes, the small wire diameter and fine OD range make these suitable for use as contact springs, battery terminal springs, and board-level retention springs in electronics assemblies. Ensure the spring's OD and length match your PCB footprint or housing pocket. For conductive applications, verify that bare steel meets your electrical resistance requirements.
If your required combination of wire diameter, OD, and length is not available in the listed variants, please contact us with your specifications. We can advise on the closest available option or discuss custom sourcing for larger quantities.
