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When a worn-out spring causes a mechanism to fail mid-project, finding the right replacement fast is critical. Whether you are a DIY enthusiast, a maintenance technician, or a small-batch manufacturer, these compression springs give you the exact wire diameter, outer diameter, and free length you need without guesswork or over-ordering.
Each spring is formed from 1.2mm wire diameter steel, with outer diameters ranging from 6mm to 20mm (approximately 0.24 in to 0.79 in) and free lengths from 10mm to 50mm (approximately 0.39 in to 1.97 in). Springs are available in packs of 10 or 50 to suit both one-off repairs and ongoing production needs.
Typical use cases include compression spring replacement for drawer slides and cabinet latches, small-engine valve return springs, jig and fixture clamping mechanisms, and prototype or short-run product development where multiple size trials are needed.
Outer diameters from 6mm to 20mm and free lengths from 10mm to 50mm give you a broad selection in a single listing — no need to source from multiple suppliers.
Consistent 1.2mm wire gauge across all variants ensures predictable spring rate and deflection characteristics for light-to-medium load applications.
Choose a 10-piece pack for repairs and prototyping, or a 50-piece pack for production runs and workshop stock — both options available for every size combination.
Springs feature closed ends for stable seating in bores and on posts, reducing lateral shift during compression cycles.
Surface treatment helps resist oxidation in typical indoor workshop and light-industrial environments, extending service life under normal operating conditions.
All dimensions are in standard metric units, making it straightforward to cross-reference with engineering drawings, CAD models, and parts lists.
| Wire Diameter | 1.2mm |
|---|---|
| Outer Diameter Range | 6mm – 20mm (approx. 0.24 in – 0.79 in) |
| Free Length Range | 10mm – 50mm (approx. 0.39 in – 1.97 in) |
| End Type | Closed ends |
| Winding Direction | See variant options |
| Material | Steel (spring-grade) |
| Surface Finish | Corrosion-resistant treatment |
| Pack Quantity | 10 pcs or 50 pcs (select above) |
| Spring Rate | See variant options |
| Load Capacity | See variant options |
Measure the bore or housing your spring sits inside (for an inside-fit) or the post it slides over (for an outside-fit). For a bore fit, the spring outer diameter should be 1–2mm smaller than the bore. For a post fit, the spring inner diameter (outer diameter minus twice the wire diameter) should be 1–2mm larger than the post. Use the variant selector above to pick the outer diameter that matches your measurement.
Free length is the uncompressed length of the spring. Choose a free length that is longer than your required working length by at least the amount of travel (deflection) you need. For example, if your mechanism compresses the spring by 15mm and you need 10mm of working length, select a free length of at least 25mm. Available lengths range from 10mm to 50mm in this listing.
These springs use a 1.2mm wire diameter, which is suited to light-to-medium load applications such as latches, small valves, jigs, and consumer product mechanisms. For heavy-duty industrial or high-cycle fatigue applications requiring specific load ratings, please contact us to confirm suitability before ordering.
The springs carry a corrosion-resistant surface treatment suitable for typical indoor workshop and light-industrial environments. They are not rated for continuous immersion in water, salt spray, or aggressive chemical exposure. If your application involves high humidity or outdoor exposure, consider applying a light machine oil or contact us to discuss alternative material options.
Yes, these compression springs are commonly used in light automotive accessories, small-engine components, jigs, fixtures, and general machinery where a standard metric spring with 1.2mm wire is appropriate. Always verify the outer diameter, free length, and load requirements against your application specifications before installation.
The 50-piece pack offers a lower per-unit cost and is ideal if you are stocking a workshop, running a small production batch, or anticipate needing replacements over time. The 10-piece pack is a cost-effective choice for one-off repairs or prototype trials where you only need a small quantity to test fit and function.
Use a digital caliper to measure: (1) the outer diameter of the coil body, (2) the wire thickness, and (3) the free (uncompressed) length. Match these three measurements to the variant options in this listing. If your existing spring is slightly worn or deformed, measure the bore or post it fits in as a cross-check.
