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When a spring failure means a halted production line, a jammed mechanism, or a failed prototype, engineers and makers need a component they can count on. These 2mm wire diameter compression springs are designed for hobbyists, mechanical engineers, and small-batch manufacturers who require consistent spring force, dimensional accuracy, and long-term corrosion resistance across a wide range of operating environments.
Each spring is formed from A2 (304) stainless steel wire with a nominal wire diameter of 2mm. The outer diameter spans 24–30mm (approximately 0.94–1.18 in), and the free length ranges from 10mm to 200mm (approximately 0.39–7.87 in), covering a broad spectrum of design requirements. Springs are available in multiple pack sizes — from single-piece sampling to bulk quantities of up to 30 pieces — to suit prototyping, repair, and production runs alike.
Typical use cases include return mechanisms in pneumatic and hydraulic valve assemblies, preload springs in precision jigs and fixtures, vibration-damping mounts in light industrial equipment, and compression elements in DIY automation projects and 3D printer extruder assemblies. The combination of A2 stainless steel and a wide dimensional range makes these springs a reliable choice for both indoor and outdoor mechanical systems.
| Material | A2 Stainless Steel (304 Grade) |
|---|---|
| Wire Diameter | 2mm (0.079 in) |
| Outer Diameter Range | 24–30mm (0.94–1.18 in) |
| Free Length Range | 10–200mm (0.39–7.87 in) |
| End Type | See variant options |
| Spring Rate | See variant options |
| Surface Finish | Natural stainless (no coating) |
| Operating Temperature | Typically –20°C to +200°C (–4°F to +392°F) |
| Pack Size Options | 1, 2, 3, 4, 5, 6, 10, 20, 30 pieces |
| Product Type | Compression Spring |
Start with your housing bore or spring seat diameter — the spring's outer diameter should be 0.5–1.5mm smaller than the bore to allow free movement without binding. For free length, select a spring that is longer than your required compressed length plus the desired travel distance. If you are unsure, order a single piece first to verify fit before purchasing a larger pack.
Load capacity depends on the specific outer diameter and free length combination selected. A 2mm wire diameter spring with a smaller OD and shorter free length will generally have a higher spring rate than a longer spring with a larger OD. For precise spring rate and load data, please contact us with your selected variant dimensions and we can provide further guidance.
Yes. A2 (304) stainless steel offers solid resistance to atmospheric corrosion, moisture, and mild chemical exposure. These springs are appropriate for outdoor mechanical assemblies, marine-adjacent environments (non-immersion), and humid industrial settings. For highly aggressive chemical or saltwater immersion applications, A4 (316) stainless steel would be a more suitable choice.
These springs are designed to standard compression spring geometry. They are compatible with spring seats, plunger assemblies, and housings dimensioned for 24–30mm OD compression springs. Always verify the inner diameter clearance against your guide rod or plunger diameter, and confirm the free length fits within your housing depth before ordering.
All pack sizes contain identical springs — the only difference is quantity. Single-piece packs are ideal for prototyping and fit verification. Packs of 3–6 suit small repair jobs or low-volume builds. Packs of 10–30 are cost-effective for production runs, maintenance stock, or projects requiring multiple springs of the same specification.
The outer diameter should match your spring seat or housing bore. A larger OD with the same wire diameter results in a lower spring rate (softer spring), while a smaller OD produces a higher spring rate (stiffer spring) for the same free length. Select the OD that fits your housing and then fine-tune the free length to achieve the desired preload and travel.
Yes. The 2mm wire diameter and 24–30mm OD range are commonly used in 3D printer bed leveling assemblies, extruder preload mechanisms, and light automation return springs. The A2 stainless steel construction ensures dimensional stability across the typical operating temperatures of these applications (up to approximately 200°C).
