Compression Spring Spring Steel Pressure Coil 1.6mm Wire OD 8-25mm 10-100mm Shop

Measure your guide pin or bore inner diameter first. The spring OD should be slightly smaller than the bore (typically 0.5–1mm clearance) so it can compress freely without binding. For free length, choose a spring that is longer than your required compressed height plus your desired travel distance. When in doubt, order a small 10-piece sample of two or three sizes to test fit before committing to a 50-piece pack.

Load capacity depends on the OD, free length, and number of active coils — all of which vary by variant. As a conservative guideline, 1.6mm wire springs in this OD range are suited to light-to-medium duty applications such as return mechanisms, valve springs, and sensor actuators. For precise load and deflection data, contact us with your selected variant dimensions.

Spring steel provides good mechanical properties but has limited inherent corrosion resistance compared to stainless steel. For outdoor, humid, or chemically exposed environments, we recommend applying a light coat of machine oil after installation, or selecting a stainless steel spring variant if your application demands higher corrosion resistance. Contact us to confirm finish options for your chosen size.

Yes. Compression springs in the 9–12mm OD range with 15–25mm free lengths are commonly used in 3D printer bed leveling assemblies. Select an OD that fits your bed-leveling bolt guide and a free length that gives you adequate adjustment travel. The 10-piece pack is ideal for a full printer bed set with spares.

Both options contain identical springs — the only difference is quantity. The 10-piece pack is designed for prototyping, repair, or single-machine builds. The 50-piece pack offers a lower per-unit cost and is suited for small-batch production, workshop stock, or projects requiring multiple springs of the same size. Select your preferred quantity using the Quantitys option above.

Use a digital caliper to measure: (1) wire diameter — place the caliper jaw across a single coil wire; (2) outer diameter — measure across the widest point of the coil; (3) free length — measure the spring end-to-end with no load applied. Compare these three measurements to the variant name (formatted as Wire × OD × Length in mm) to confirm a match before ordering.

Yes. The 1.6mm wire compression spring range is well-suited to lightweight robotics, gripper return mechanisms, linear actuator preload, and small pneumatic valve assemblies. The wide OD and length selection means you can find a spring that fits standard M3–M10 guide pins commonly used in DIY automation frames and CNC fixtures.