Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
When a mechanism fails because a worn-out spring can no longer hold its load, finding an exact replacement in the right size is the real challenge. Engineers, hobbyists, and repair technicians who need a dependable small-diameter compression spring will find this 2 mm wire diameter coil spring a practical, ready-to-use solution across a wide range of projects.
These compression springs are manufactured from steel wire with a wire diameter of 2 mm (0.079 in) and an outer diameter ranging from 12 mm to 19 mm (0.47–0.75 in) depending on the variant selected. Free lengths span from 15 mm to 305 mm (0.59–12.0 in), giving you precise control over spring rate and travel. The helical coil construction provides consistent axial force under compression.
Typical use cases include small mechanical assemblies requiring controlled return force, DIY tool repair and maintenance where a replacement compression spring is needed, robotics and maker projects calling for a compact coil spring with a defined spring rate, and light industrial equipment maintenance involving small pressure springs in valves, latches, or actuators.
| Wire Diameter | 2 mm (0.079 in) |
|---|---|
| Outer Diameter (OD) | 12 mm – 19 mm (0.47–0.75 in) — See variant options |
| Inner Diameter (ID) | See variant options (OD minus 2× wire dia) |
| Free Length | 15 mm – 305 mm (0.59–12.0 in) — See variant options |
| Material | Steel |
| Spring Type | Compression (helical coil) |
| End Type | See variant options |
| Spring Rate | See variant options |
| Max Load | See variant options |
| Surface Finish | See variant options |
| Packaging | 3 pcs / 5 pcs / 10 pcs — See variant options |
Measure the bore (housing hole) your spring will sit inside, or the shaft it will slide over. The spring's outer diameter should be slightly smaller than the bore to allow free movement, and the inner diameter should be slightly larger than the shaft. Use the variant selector to match the OD to your measured dimensions. If you are replacing an existing spring, measure the old spring's OD and free length directly.
The load capacity depends on the outer diameter, free length, and number of active coils — all of which vary by variant. A 2 mm wire diameter spring is suited to light-to-medium duty applications such as latches, small actuators, tool mechanisms, and electronic enclosures. For exact load and spring rate values, refer to the variant specifications or contact us to confirm before ordering for load-critical applications.
These springs are made from steel wire. Standard steel offers good mechanical properties but has limited corrosion resistance in wet or chemically aggressive environments. For outdoor or humid applications, consider applying a light coating of oil or grease after installation. If you require stainless steel or zinc-plated variants, contact us to confirm availability.
Free length is the natural, unloaded length of the spring as listed in the variant options. Compressed length (solid height) is the minimum length when all coils are fully closed under maximum load. For most applications, you should select a free length that allows adequate travel (stroke) within your mechanism without fully compressing the spring to solid height, which can cause permanent set.
Yes. The 2 mm wire diameter range with OD options from 12–19 mm is well suited to hobby robotics, 3D printer mechanisms, CNC machine components, and general maker projects. The variety of lengths (15–305 mm) means you can find a spring that fits compact enclosures or longer-stroke linkages. Select the OD and length that match your design's spring pocket and required travel.
Pack size depends on the length variant selected. Shorter lengths (15–50 mm) are typically available in packs of 10 pieces. Medium lengths (60–200 mm) come in packs of 5 pieces. Longer lengths (300–305 mm) are available in packs of 3 pieces. The exact pack size is shown in the Packaging option in the variant selector above.
Use a caliper to measure: (1) wire diameter — the thickness of the wire itself; (2) outer diameter — the widest point across the coil; (3) free length — the total length of the uncompressed spring. Match these three measurements to the variant options. If your existing spring is slightly compressed or deformed, measure the wire diameter and OD first, then estimate the original free length from the mechanism's travel range.
