Compression Spring Height 8mm Outer dia 5mm -Choose QTY

For one-off repairs or prototyping, the 30-piece pack is usually sufficient. If you are running a batch build, stocking a workshop, or working on a production run of small assemblies, the 80 or 100-piece packs offer better value per spring. Having extras on hand also ensures you can replace worn springs quickly without reordering.

These springs are designed for light-to-medium load applications. The exact spring rate depends on the wire diameter and coil count of the specific batch. For applications requiring a precise load rating (e.g., safety-critical mechanisms), we recommend measuring a sample spring or contacting us to confirm specifications before committing to a large quantity.

These springs are made from steel wire. For indoor, dry-environment applications they perform reliably over extended use. If your application involves moisture, humidity, or outdoor exposure, consider applying a light coat of machine oil or using them in a protected housing. For highly corrosive environments, a stainless steel spring may be more appropriate.

The 5mm outer diameter means you need a bore or housing with an inner diameter of at least 5.2–5.5mm to allow free movement without binding. The inner diameter of the spring (typically 3.5–4.2mm) determines the maximum shaft or pin diameter it can slide over. Always verify both your bore ID and shaft OD against these dimensions before ordering.

Yes. The compact 8mm × 5mm form factor is well-suited for use in push-button contacts, battery terminal springs, and PCB-mounted spring contacts. Ensure the spring's free height and compressed height match your assembly's travel requirements, and verify that the spring material is compatible with any conductive contact requirements in your circuit.

Measure the worn spring's outer diameter, free height (uncompressed length), and wire diameter using calipers. Compare these to the 5mm OD and 8mm free height of this spring. If the worn spring has deformed significantly, also check the original equipment's housing bore and shaft dimensions as a reference. A spring that matches within ±0.2mm on OD and ±0.5mm on free height is typically a suitable replacement for non-critical applications.

Absolutely. These springs are commonly used in DIY automation for limit switch preloading, lightweight actuator return mechanisms, and spring-loaded clamp assemblies. Their small size makes them easy to integrate into 3D-printed housings and standard hardware fittings. The multi-pack options mean you can prototype with several configurations before settling on your final design.