Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
When a worn-out spring causes your jig to misfire, your fixture to sag, or your mechanism to lose tension, finding the right replacement fast is critical. These compression springs are designed for makers, engineers, and DIY builders who need reliable, dimensionally consistent coil springs across a wide range of wire diameters and outer diameters.
Each spring is manufactured from carbon steel wire with a consistent coil pitch and closed ends. Wire diameters range from 1.6 mm to 6 mm (approximately 0.063" to 0.236"), outer diameters from 8 mm to 50 mm (approximately 0.315" to 1.969"), and all springs share a free length of 305 mm (approximately 12.0"). Available in quantities of 1, 2, 5, 6, or 10 pieces depending on the size selected.
Typical applications include CNC machine tool holders and Z-axis return mechanisms, robotics joint preload and gripper tension systems, industrial fixture clamps and jig return springs, and general DIY repair of appliances, furniture, and mechanical assemblies requiring a compression spring replacement.
| Spring Type | Compression (coil) |
|---|---|
| Material | Carbon steel wire |
| Wire Diameter Range | 1.6 mm – 6 mm (0.063" – 0.236") |
| Outer Diameter Range | 8 mm – 50 mm (0.315" – 1.969") |
| Free Length | 305 mm (12.0") |
| End Type | Closed ends |
| Surface Finish | See variant options |
| Spring Rate | See variant options |
| Max Load Capacity | See variant options |
| Available Quantities | 1 / 2 / 5 / 6 / 10 pcs (varies by size) |
The wire diameter determines the spring's stiffness and load capacity — thicker wire produces a stiffer spring. The outer diameter must fit within your bore or spring pocket with clearance. Measure your pocket ID, subtract 1–2 mm for clearance, and select the closest OD. Then choose the wire diameter based on the force you need the spring to exert.
The free length is 305 mm (approximately 12.0") — this is the uncompressed length of the spring. Verify that your assembly has enough travel depth to accommodate this length before ordering. If your application requires a shorter spring, these can be cut, but that will alter the spring rate.
Yes. Carbon steel compression springs are widely used in CNC tooling, fixture clamps, and robotic joints. The appropriate strength depends on the wire diameter and OD you select. Larger wire diameters (e.g., 3–6 mm) provide significantly higher load capacity suitable for industrial applications, while smaller diameters (1.6–2 mm) suit lighter-duty or precision mechanisms.
These springs are made from carbon steel, which offers moderate corrosion resistance in dry indoor environments. For applications exposed to moisture, chemicals, or outdoor conditions, consider applying a protective coating or contact us to confirm if a treated variant is available for your size.
Yes, provided the wire diameter, outer diameter, and free length match your original spring. Measure your existing spring's wire dia, OD, and free length before selecting a variant. The 305 mm free length covers many standard replacement scenarios, and the wide OD range (8–50 mm) accommodates most common spring pocket sizes.
Depending on the size selected, quantities of 1, 2, 5, 6, or 10 pieces are available. For prototyping or single repairs, order 1 or 2 pcs. For production runs, fixture sets, or stocking spares, the 6 or 10 pcs options offer better per-unit value. Check the variant selector above for the quantities available for your chosen size.
Measure three dimensions: (1) wire diameter using calipers, (2) outer diameter of the coil body, and (3) free (uncompressed) length. Match these to the variant options above. If your free length differs from 305 mm, contact us to confirm options.
