Stainless Steel Compression Spring 1.2/1.4mm Wire Diameter Pressure Small 10pcs

Measure the bore or spring seat inner diameter in your assembly. The spring's outside diameter should be slightly smaller than the bore to allow free movement without binding. For a shaft-guided spring, the spring's inner diameter (outside diameter minus twice the wire diameter) should be slightly larger than the shaft. Use the variant selector above to pick the outside diameter that fits your specific bore or seat.

Wire diameter directly affects the spring rate — a thicker wire (1.4mm) produces a stiffer spring with higher load capacity for the same coil geometry, while a thinner wire (1.2mm) yields a softer spring with lower force at the same deflection. Choose 1.2mm for lighter return forces and 1.4mm where more resistance is needed.

Yes. These springs are made from stainless steel wire, which provides good resistance to rust and oxidation in humid, mildly wet, and lightly corrosive environments. They are not rated for immersion in strong acids or chlorinated solutions, but they will outperform standard carbon steel springs in typical workshop, outdoor, or electronics enclosure conditions.

Yes. These compression springs are commonly used in 3D printer bed leveling assemblies, extruder tensioners, and robotic joint return mechanisms. Select the outside diameter and free length that match your printer's spring seat or robot joint geometry. The 10-piece pack also gives you extras for testing different preload settings.

The free length is the uncompressed length of the spring. You should choose a free length longer than the maximum compressed height your assembly allows, so the spring remains under some compression (preload) at all times. A common rule of thumb is to select a free length 20–30% longer than your desired working height to ensure consistent contact force.

Each listing is sold as a pack of 10 identical springs. All 10 pieces in a pack share the same wire diameter, outside diameter, and free length as specified by the variant you select. This is ideal for prototyping, batch builds, or keeping spares on hand.

These springs are suitable for a wide range of light-to-medium duty applications including electronic button and switch mechanisms, mechanical jigs and fixtures, 3D printer components, robotics and automation return springs, small appliance repair, hobby models, and general DIY assembly work where a compact, corrosion-resistant compression spring is needed.