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When a repair stalls because you cannot find a spring that fits, the whole project grinds to a halt. Hobbyists, engineers, and maintenance technicians who work with mechanical assemblies, jigs, or custom fixtures know the frustration of hunting for a compression spring in exactly the right wire gauge and free length. This listing solves that problem with a curated selection of steel compression springs spanning wire diameters of 1.6 mm, 1.8 mm, and 2.0 mm — 232 size combinations in a single place.
Each spring is formed from carbon steel wire with a smooth, consistent coil finish. Wire diameters run 1.6 mm (~0.063 in), 1.8 mm (~0.071 in), and 2.0 mm (~0.079 in). Outer diameters range from 9 mm to 30 mm (approximately 0.35 in to 1.18 in), and free lengths span 15 mm to 50 mm (approximately 0.59 in to 1.97 in). Each pack contains 10 pieces of the selected size.
Typical use cases include replacing worn compression springs in door latches and cabinet hardware, providing return force in DIY pneumatic or mechanical jigs, acting as buffer elements in light-duty industrial fixtures, and serving as test springs in prototype assemblies where consistent spring rate across a small batch is needed.
Choose 1.6 mm, 1.8 mm, or 2.0 mm wire diameter to match your load and deflection requirements precisely.
Outer diameters from 9 mm to 30 mm and free lengths from 15 mm to 50 mm give you granular control over spring geometry.
Each order ships 10 identical springs, giving you spares for prototyping, testing, or batch replacement without overstocking.
Formed from carbon steel wire for consistent spring rate and reliable elastic return across repeated compression cycles.
Flat, closed ends provide stable seating on flat surfaces and reduce lateral buckling under axial load.
Suited for door hardware, mechanical jigs, prototype fixtures, light industrial equipment, and DIY repair projects.
| Material | Carbon steel |
|---|---|
| Wire Diameter | 1.6 mm / 1.8 mm / 2.0 mm (see variant options) |
| Outer Diameter | 9 mm – 30 mm (see variant options) |
| Free Length | 15 mm – 50 mm (see variant options) |
| End Type | Closed (ground flat) |
| Coil Direction | Right-hand |
| Surface Finish | Bare steel (natural) |
| Quantity per Pack | 10 pieces |
| Spring Rate | See variant options |
| Max Load Capacity | See variant options |
Match the outer diameter (OD) to your bore or housing inner diameter, leaving a small clearance (typically 0.5–1 mm). Then select a free length that gives you the desired compressed height and travel. Finally, choose the wire diameter that delivers the spring rate your application needs — heavier wire means a stiffer spring.
Wire diameter directly affects spring stiffness (spring rate). A 2.0 mm wire spring is noticeably stiffer than a 1.6 mm wire spring of the same OD and free length. Choose a lighter wire gauge for low-force applications such as latches and light return mechanisms, and a heavier gauge for higher-load fixtures or industrial use.
These springs are made from bare carbon steel without a protective coating. They are suitable for dry indoor environments. For applications exposed to moisture, humidity, or chemicals, consider applying a light machine oil after installation or sourcing stainless steel springs instead.
Bare carbon steel will oxidize when exposed to rain or high humidity. For outdoor use, apply a corrosion-inhibiting coating such as grease or a rust-preventive spray, and inspect periodically. For long-term outdoor exposure, a stainless steel spring is a more durable choice.
The format is Wire Diameter × Outer Diameter × Free Length, all in millimetres. For example, 1.6*9*15mm means: wire diameter 1.6 mm, outer diameter 9 mm, free length 15 mm. Use these three dimensions to verify fit before ordering.
Yes. These springs feature closed and ground ends, which provide a flat bearing surface for stable seating on flat spring seats or inside recessed bores. This reduces lateral tipping and ensures more consistent load distribution compared to open-end springs.
Yes. Springs in series (stacked end-to-end) reduce the combined spring rate and increase total travel. Springs in parallel (side by side) increase the combined spring rate. Both configurations are common in DIY jigs and mechanical assemblies. Ensure the housing accommodates the chosen arrangement.
