Compression Spring Various 0.6mm-0.7mm Diameter & 5-305mm Length Pressure Small

Match three key dimensions to your assembly: (1) wire diameter — determines load capacity and stiffness; (2) outer diameter — must fit inside your bore with clearance; (3) free length — should be longer than your required working length to allow compression travel. Use the variant label format Wire Dia × OD × Free Length (e.g., 0.6×6×30mm) to cross-reference your spec sheet directly.

These springs are wound from steel wire typical of carbon spring steel used in small-diameter compression springs. This material provides good elastic recovery and consistent spring rate for light-duty to moderate-duty applications. For corrosive environments, consider whether a coated or stainless variant is needed — contact us to confirm material specifics for your use case.

Standard carbon spring steel has limited corrosion resistance without surface treatment. For indoor, dry environments these springs perform reliably. For humid, wet, or chemically exposed environments, we recommend verifying the surface finish of your selected variant or contacting us to confirm suitability before ordering.

A thicker wire diameter (0.7mm vs 0.6mm) generally produces a stiffer spring with a higher spring rate for the same OD and free length. If you need more push-back force in the same space, choose 0.7mm wire. If you need a softer, more compliant spring, 0.6mm wire is the better choice. Always verify the spring rate against your load requirement.

Yes. The small outer diameters (4–12mm) and short free lengths available (as short as 5mm) make these springs well-suited for button-return mechanisms, spring-loaded contact pins, battery contacts, and similar electronics applications. Ensure the OD fits your housing bore and the free length provides adequate travel for your switch or contact design.

Small compression springs are easy to lose during assembly and often need replacement over the life of a product. Buying in packs of 10 gives you spares for prototyping iterations, multi-unit production runs, and future repairs — all at a lower per-unit cost than sourcing singles. It also reduces reorder frequency for ongoing workshop or lab use.

Use a digital caliper to measure: (1) wire diameter — measure the cross-section of a single coil; (2) outer diameter — measure across the widest point of the coil; (3) free length — measure the spring at rest, uncompressed. Match these three values to the variant label (Wire Dia × OD × Free Length in mm) to find your replacement. If your spring is slightly compressed in its housing, add the compressed travel distance to the free length measurement.