Compression Spring 1.0mm 304 Stainless Steel Length 10 to 200mm Pressure Springs

Measure the bore (hole) or housing your spring will sit inside — the spring's outer diameter should be slightly smaller than the bore for a free fit. For the free length, measure the uncompressed space available and ensure the spring's free length is equal to or slightly longer than that space so it exerts force when installed. Select the variant that matches both dimensions from the options above.

Spring rate depends on wire diameter, outer diameter, free length, and number of active coils. With a 1.0mm wire diameter, these are light-duty compression springs suited for low-to-moderate load applications such as button returns, latches, and small mechanism resets. For precise spring rate values, please contact us with your selected variant dimensions.

Yes. 304 stainless steel provides solid resistance to rust and oxidation in humid, mildly corrosive, and outdoor environments. It is not recommended for prolonged exposure to chloride-rich environments (such as saltwater immersion) — for those applications, 316 stainless steel would be more appropriate.

Yes, all dimensions are metric. The outer diameters (6mm–18mm) and free lengths (10mm–200mm) are sized to work with standard metric hardware. Ensure the inner diameter of the spring (outer diameter minus twice the wire diameter, approximately OD – 2mm) clears your shaft with adequate tolerance.

304 stainless steel compression springs typically perform reliably up to approximately 200°C (392°F) without significant loss of spring properties. For applications exceeding this temperature, consider high-temperature alloy springs. For most electronics, appliance, and light industrial uses, these springs are well within the safe operating range.

Pack quantities are structured to match typical project usage: shorter springs (10–50mm) are commonly used in multiples for button arrays or multi-spring assemblies, so they come in packs of 10. Mid-range lengths (60–100mm) come in packs of 5, and longer springs (120–200mm) are sold individually since they are typically used one per assembly point. This keeps your per-unit cost efficient regardless of project scale.

Check three dimensions: (1) Outer diameter — must be smaller than your housing bore; (2) Inner diameter (OD minus ~2mm for 1.0mm wire) — must be larger than your guide shaft if used on a shaft; (3) Free length — must be appropriate for your compressed and extended travel requirements. If you are unsure, contact us with your application details and we can help you select the right variant.