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When a project demands consistent return force and dimensional accuracy, finding the right compression spring can be frustrating. Mismatched wire diameters, wrong outer diameters, or springs that collapse under load waste time and money. These 3mm wire diameter compression springs are engineered for engineers, makers, and DIY enthusiasts who need a dependable pressure spring that fits precisely and performs under repeated cycling.
Each spring is manufactured from steel wire with a wire diameter of 3mm (0.118 in) and an outer diameter ranging from 22mm to 25mm (0.87 in – 0.98 in). Free lengths span 20mm to 100mm (0.79 in – 3.94 in), giving you a wide selection to match your exact application. Springs are available in pack sizes of 1, 3, 5, 10, 20, 30, and 50 pieces to suit both prototyping and production runs.
Typical use cases include mechanical assemblies requiring axial load return force, DIY tool and fixture fabrication, automotive and industrial equipment maintenance, and robotics or automation projects where consistent spring rate and travel are critical. The standardized 3mm wire diameter also makes these springs a go-to replacement for worn-out compression springs in machinery and consumer products.
Consistent 3mm wire cross-section delivers reliable spring rate and load capacity across all size variants.
Outer diameters from 22mm to 25mm and free lengths from 20mm to 100mm cover a broad spectrum of mechanical needs.
Closed and ground ends (where applicable) ensure even load distribution and stable axial compression performance.
Made from steel wire for durability under repeated compression cycles in mechanical and industrial environments.
Available in packs of 1, 3, 5, 10, 20, 30, and 50 pieces — order exactly what your project requires.
Suited for DIY fixtures, machinery maintenance, robotics, automotive components, and general mechanical assemblies.
| Wire Diameter | 3mm (0.118 in) |
|---|---|
| Outer Diameter | 22mm / 23mm / 24mm / 25mm (0.87–0.98 in) |
| Free Length | 20mm – 100mm (0.79–3.94 in) |
| Material | Steel |
| Spring Type | Compression (Pressure Spring) |
| End Type | See variant options |
| Spring Rate | See variant options |
| Surface Finish | See variant options |
| Pack Size | 1 / 3 / 5 / 10 / 20 / 30 / 50 pcs |
Measure the bore or housing your spring will sit in and select an outer diameter (22–25mm) that fits with a small clearance. For free length, choose a spring that is longer than your required compressed length to ensure adequate travel and return force. If you are replacing an existing spring, match the wire diameter (3mm), outer diameter, and free length as closely as possible.
These springs are manufactured from steel wire. Steel compression springs offer a good balance of strength, elasticity, and durability for general mechanical and DIY applications. If you require a specific alloy or surface treatment for your environment, please contact us to confirm suitability.
Standard steel springs may be susceptible to surface rust in humid or wet environments over time. For outdoor or corrosive applications, consider applying a protective coating or lubricant after installation. If you need springs with enhanced corrosion resistance (e.g., stainless steel), please contact us to confirm available options.
Standard steel compression springs are generally suitable for temperatures up to approximately 120–150°C (248–302°F). For applications involving higher temperatures, the spring rate and fatigue life may be affected. Contact us to confirm suitability for your specific operating temperature range.
For prototyping or testing, packs of 1, 3, or 5 pieces allow you to validate fit and performance without committing to large quantities. For production runs or maintenance stock, packs of 10, 20, 30, or 50 pieces offer better value per unit. Select the pack size that matches your project volume.
Spring rate depends on wire diameter, outer diameter, free length, and number of active coils. If you need specific load or rate data for your application, please contact us with your requirements. For general DIY and replacement use, matching the physical dimensions (wire diameter, outer diameter, free length) to your existing spring is typically sufficient.
Yes. With outer diameters of 22mm, 23mm, 24mm, and 25mm, these springs are compatible with standard spring seats and guide rods designed for that outer diameter range. Ensure your guide rod diameter is smaller than the spring's inner diameter (outer diameter minus twice the wire diameter) to allow free movement.
