1.5mm Wire Dia Compression Spring 16-25mm Dia 10-200mm Length A2 Stainless Steel

Measure the bore or guide rod your spring will seat in. The spring outer diameter should be slightly smaller than the bore (typically 0.5–1mm clearance) or slightly larger than the guide rod. For free length, select a value that gives you the desired compressed and extended travel range. Use the variant selector above to browse all available OD × length combinations.

Spring rate varies by outer diameter and free length — longer springs with larger OD generally have lower rates, while shorter springs are stiffer. Exact spring rate data is not listed per variant; if you need a specific rate, contact us with your OD, length, and load requirements and we can advise on the closest match.

A2 (304) stainless steel provides good resistance to atmospheric corrosion, fresh water, and mild chemical exposure. It is suitable for sheltered outdoor use and humid indoor environments. For highly aggressive environments (salt spray, chlorinated water, strong acids), A4 (316) stainless steel would be a more appropriate choice.

Closed ends mean the last coil is wound tight against the adjacent coil, and ground ends mean the tip is machined flat. This combination creates a perpendicular, stable bearing surface that reduces lateral buckling under load and ensures the spring sits squarely in its housing — important for precision mechanisms and load-bearing assemblies.

Yes. The 1.5mm wire diameter and 16–25mm OD range makes these springs well-suited for small actuators, return mechanisms, gripper assemblies, and sensor mounts in robotics and automation. The stainless steel construction also handles repeated cycling without significant fatigue degradation under normal operating loads.

Order a single piece (1 pc) when prototyping or testing fit and function before committing to a larger quantity. Choose a 5-pack for small production runs or to keep spares on hand. The 10-pack offers the best per-unit value for recurring maintenance needs or batch manufacturing. All pack sizes ship the same spring — only the quantity differs.

The outer diameter determines the bore size the spring fits into and influences the spring rate — a larger OD with the same wire diameter and length will generally be softer (lower spring rate). Select the OD that matches your housing bore or guide rod clearance. All OD options share the same 1.5mm wire diameter and A2 stainless steel material.