Wire Dia 1.5mm Compression Springs A2 Stainless Steel Small Pressure Spring

Measure the bore or housing your spring will sit in and subtract 0.5–1mm for clearance to get your target OD. For free length, measure the uncompressed travel distance plus your desired preload. Use the variant selector above to match OD and length to your spec. If you are between sizes, choose the smaller OD to ensure the spring fits freely in the bore.

A 1.5mm wire diameter is suited for light-to-medium compression loads. The exact load capacity depends on the outer diameter, free length, and number of active coils — all of which vary by variant. These springs are designed for return mechanisms, latches, plungers, and similar low-to-moderate force applications rather than heavy industrial clamping or high-cycle fatigue environments.

Yes. A2 (304) stainless steel provides good resistance to rust and oxidation in humid, damp, and mildly corrosive environments. They are suitable for light outdoor use, garden irrigation controls, and marine-adjacent hobby projects. For highly aggressive chemical or saltwater immersion environments, A4 (316) stainless steel would be a more appropriate choice.

Many 3D printer extruder and bed-leveling assemblies use compression springs in the 1–2mm wire diameter range. Check your printer's spring specification (OD, free length, and wire diameter) against the variant options above. The 1.5mm wire diameter and available OD/length combinations cover a wide range of common printer spring slots. Always verify dimensions before ordering.

Both packs contain identical springs — the only difference is quantity. The 10-piece pack is ideal for prototyping, single-project use, or keeping a small spare supply. The 20-piece pack offers better per-unit value for production runs, repair kits, or projects that require multiple springs of the same size.

The outer diameter determines how the spring fits in its housing and affects the spring rate — a larger OD with the same wire diameter and length will generally have a lower spring rate (softer feel). Choose the OD that fits your bore with 0.5–1mm clearance. If you need a stiffer spring, select a smaller OD or shorter free length variant.

Yes. The stainless steel construction is non-magnetic (A2/304 grade is austenitic and generally non-magnetic in the annealed state), making these springs suitable for use near sensitive electronics. The compact wire diameter and range of small OD options (starting at 9mm) fit many standard enclosure latch and contact-pin spring slots.