Compression Spring Steel 2mm Wire Dia Small Pressure Springs-Coil Spring

Measure the bore or guide rod your spring will seat against. The spring's outer diameter should be slightly smaller than the bore (typically 0.5–1mm clearance) or slightly larger than the guide rod. For free length, select a spring that is longer than your required compressed length plus the desired travel distance. Use the variant selector above to match your dimensional requirements.

Spring rate varies by outer diameter and free length combination. Longer springs with larger outer diameters generally have lower spring rates, while shorter springs with smaller outer diameters are stiffer. Specific spring rate data is not listed per variant — if you require a precise rate for a load-critical design, please contact us to confirm before ordering.

These springs are made from steel wire. Standard steel springs are not inherently corrosion-resistant and may develop surface oxidation in humid or wet environments over time. For outdoor or high-humidity applications, consider applying a light coating of oil or grease, or contact us to inquire about surface-treated variants.

These compression springs are compatible with any spring seat, bore, or guide rod sized to accept the selected outer diameter (20–30mm range). They are commonly used in 3D printers, robotics joints, mechanical fixtures, electronic enclosures, and small actuators. No special tools are required for installation — springs can be placed by hand into their seat or over a guide rod.

Pack sizes of 2, 3, 5, and 10 pieces are available depending on the variant. For prototyping or single-unit repairs, a 2- or 3-piece pack is typically sufficient. For small production runs or to keep spares on hand, the 5- or 10-piece pack offers better per-unit value. Select your preferred quantity in the Packaging (pcs) option above.

Steel compression springs are designed for cyclic loading within their elastic range. As long as the spring is not compressed beyond its solid height (coil bind) during use, it will maintain its free length and spring rate over many cycles. Avoid over-compressing the spring in your design to maximize service life.

The first number (2) refers to the wire diameter in millimeters, which is the same across all variants. The second number (20–30mm) is the outer diameter of the coil. A larger outer diameter spring will fit a wider bore or seat, and at the same wire diameter and length, will generally have a lower spring rate than a smaller outer diameter spring. Choose based on the bore size and load requirements of your application.