10pcs Wire Dia.0.6mm-0.8mm OD 4mm-14mm Small Springs Compression Spring Steel

Wire diameter determines the spring's stiffness and load capacity. A thicker wire (0.8 mm) produces a stiffer spring with higher load capacity, while a thinner wire (0.6 mm) gives a softer, lighter-load spring. Match the wire diameter to the force range your application requires. If you are unsure, start with 0.7 mm as a mid-range option and test deflection under your expected load.

The outer diameter (OD) of the spring should be slightly smaller than the inner diameter of the bore or housing it sits in, typically leaving 0.2–0.5 mm clearance on each side. For example, if your housing bore is 8 mm, select a spring with a 7 mm OD. If the spring rides on a guide pin, the inner diameter (ID = OD minus twice the wire diameter) must be larger than the pin diameter.

Load capacity depends on the specific wire diameter, OD, and free length combination you select. Thicker wire and shorter free length generally produce higher spring rates and load capacity. These springs are designed for light-duty applications such as button return, plunger tensioning, and small valve actuation. They are not intended for heavy industrial or high-cycle fatigue applications. Contact us to confirm suitability for your specific load requirements.

These springs are made from carbon steel with a natural uncoated finish, which means they are not inherently corrosion-resistant. For outdoor, humid, or wet environments, consider applying a light coat of oil or grease after installation, or look for stainless steel spring alternatives. For indoor, dry, or protected environments, carbon steel springs perform reliably over extended service life.

Yes. The small OD range (4–14 mm) and short-to-medium free lengths (5–50 mm) make these springs well-suited for 3D printer extruder tensioning, bed leveling, and CNC workholding fixtures. Select the OD and length that match your guide pin diameter and required travel. The 10-piece pack also gives you spares for iterative testing during prototyping.

Yes. The fine wire diameters (0.6–0.8 mm) and small outer diameters (starting from 4 mm) make these springs suitable for button return mechanisms, tactile switch assemblies, and small actuator springs in consumer electronics and hobby electronics projects. Ensure the free length and OD match the cavity dimensions of your switch or button housing.

The length listed in the variant name is the free length — the uncompressed length of the spring at rest. A longer free length provides more travel (compression stroke) before the spring reaches solid height. Choose a free length that gives you adequate travel for your application while fitting within the available space in your assembly. As a general rule, the compressed length should not exceed 80% of the free length for reliable spring return.