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When a worn-out or undersized spring causes your mechanism to fail — whether it's a valve, latch, switch, or precision assembly — finding the exact replacement is critical. These 0.8mm wire diameter compression springs are designed for engineers, technicians, and hands-on DIYers who need a dependable pressure spring in a compact form factor, available in a wide range of lengths and outer diameters.
Each spring is manufactured from 304 stainless steel wire with a wire diameter of 0.8mm. Outer diameters range from 5mm to 15mm (approximately 0.20" to 0.59"), and lengths span from 5mm to 120mm (approximately 0.20" to 4.72"). Springs are sold in packs of 5 or 10 pieces depending on the selected length. The coil ends are closed and ground for stable seating.
Typical use cases include electronic device button mechanisms requiring a compact 0.8mm compression spring, automotive and appliance valve assemblies needing a corrosion-resistant stainless steel pressure spring, and precision instrument or jig fixtures where a small-diameter coil spring with consistent load characteristics is required.
Made from 304-grade stainless steel wire, offering solid corrosion resistance in humid, wet, and mildly acidic environments — suitable for both indoor and outdoor mechanical assemblies.
Available in 21 length options from 5mm to 120mm (0.20" to 4.72"), allowing precise matching to your application's free-length requirement without custom fabrication.
Outer diameters span 5mm to 15mm across 11 size variants, covering a broad range of bore and housing dimensions for mechanical, electronic, and industrial applications.
Closed and ground end coils provide a flat, stable seating surface, ensuring consistent axial load transfer and reducing lateral deflection during compression cycles.
Available in packs of 5 or 10 pieces depending on the selected length, making it practical to stock spares or fulfill small-batch production and repair needs.
Suited for use in electronic switches, valve assemblies, precision instruments, jig fixtures, latches, and general mechanical assemblies requiring a compact stainless steel pressure spring.
| Wire Diameter | 0.8mm (approx. 0.031") |
|---|---|
| Outer Diameter (OD) | 5mm – 15mm (approx. 0.20" – 0.59") — See variant options |
| Inner Diameter (ID) | See variant options (OD minus 2× wire dia) |
| Free Length | 5mm – 120mm (approx. 0.20" – 4.72") — See variant options |
| Material | 304 Stainless Steel |
| End Type | Closed and Ground |
| Spring Type | Compression (Pressure Spring) |
| Spring Rate | See variant options |
| Surface Finish | Bright / Natural Stainless |
| Packaging | 5 pcs or 10 pcs — See variant options |
Match three key dimensions: outer diameter (OD) to your bore or housing, free length to your required travel plus solid height, and wire diameter to your load requirement. For this product, OD ranges from 5mm to 15mm and free length from 5mm to 120mm. If you are unsure of the spring rate needed, contact us to confirm before ordering.
The format "0.8 x [OD]mm" indicates wire diameter × outer diameter. For example, "0.8 x 5mm" means a 0.8mm wire wound to a 5mm outer diameter, while "0.8 x 10mm" has the same wire but a 10mm outer diameter. Choose based on the bore or housing your spring must fit into.
These 0.8mm wire springs are designed for light-to-medium duty applications such as electronic switches, valves, latches, and precision instruments. They are not intended for heavy structural or high-load industrial applications. Spring rate varies by OD and free length — contact us to confirm suitability for your specific load requirement.
304 stainless steel offers good resistance to oxidation, moisture, and mild chemical exposure, making these springs suitable for humid environments, light outdoor use, and applications where mild corrosion resistance is needed. For highly aggressive chemical or marine environments, 316 stainless steel would be more appropriate.
No. These are compression springs designed to resist compressive (pushing) forces. They are not suitable for extension (pulling) applications. Using a compression spring in tension can permanently deform the coils and cause premature failure.
Shorter lengths (5mm–50mm) are available in packs of 10, while longer lengths (55mm–120mm) are available in packs of 5. If you need spares for maintenance or are prototyping, the 10-pack offers better value for shorter springs. For longer springs used in lower-volume applications, the 5-pack is a practical choice.
Measure the wire diameter with calipers, then measure the outer diameter and the free (uncompressed) length. Match these three values to the variant options listed. If your existing spring is slightly compressed in its resting position, measure it in its natural unloaded state for the free length.
