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When a worn or snapped torsion spring brings your project to a halt, finding the right replacement size fast is what separates a quick fix from a frustrating delay. Whether you are a hands-on homeowner, a mechanical engineer, or a workshop technician, having a well-stocked assortment of torsion springs on hand means you are always ready for the next job.
This assortment includes torsion springs in two distinct size profiles — 8.3 × 12.6 mm (silver finish) and 0.5 × 6 × 2.5 × 18 mm (black finish) — crafted from high-tension carbon steel wire. Wire diameters typically range from 0.5 mm to 1.2 mm (0.02 in to 0.047 in), with outer diameters spanning approximately 6 mm to 13 mm (0.24 in to 0.51 in). Available in pack sizes from 20 to 150 pieces to suit both occasional repairs and bulk workshop stocking.
Typical applications include small appliance repair (hinges, latches, and door mechanisms), precision instrument assembly requiring consistent rotational force, and DIY mechanical projects such as custom clamps, triggers, and spring-loaded fixtures. Long-tail use cases include torsion spring replacement for cabinet hinges, clock mechanisms, and electronic device enclosures.
Choose between 8.3 × 12.6 mm silver springs or 0.5 × 6 × 2.5 × 18 mm black springs to match your specific application seat and torque requirements.
Manufactured from carbon steel wire engineered for consistent torsional force, maintaining spring memory across repeated compression and release cycles.
Silver variants feature a bright zinc-plated finish; black variants use a phosphate or oxide coating — both providing a protective barrier against moisture and oxidation in indoor environments.
Available in 20, 40, 60 PCS (silver) and 50, 100, 150 PCS (black) — scale your order to match project volume without overstocking or running short mid-job.
Each spring is produced to tight dimensional tolerances, ensuring uniform leg angle and coil spacing for predictable torque output and reliable fit in precision assemblies.
Covers a broad range of DIY repair, prototyping, and light industrial tasks — from cabinet hinge springs and appliance latches to custom mechanical fixtures and spring-loaded clamps.
| Material | Carbon steel wire |
|---|---|
| Finish / Color | Silver (zinc-plated) / Black (phosphate or oxide coated) |
| Size — Silver Variant | 8.3 × 12.6 mm (approx. 0.33 × 0.50 in) |
| Size — Black Variant | 0.5 × 6 × 2.5 × 18 mm (wire Ø 0.5 mm, OD 6 mm, leg 18 mm) |
| Wire Diameter | See variant options |
| Outer Diameter | See variant options |
| Free Leg Length | See variant options |
| Wind Direction | See variant options |
| Pack Quantity | 20 / 40 / 50 / 60 / 100 / 150 PCS (see variant options) |
| Application | Hinges, latches, appliances, instruments, DIY mechanisms |
| Operating Environment | Indoor / dry conditions recommended |
Measure the inner diameter of the spring seat, the required wire diameter, and the free leg length in your mechanism. Match these to the variant dimensions listed above. The silver 8.3 × 12.6 mm spring suits wider seats, while the black 0.5 × 6 × 2.5 × 18 mm spring is designed for narrow-bore precision applications.
Yes. These torsion springs are made from carbon steel wire selected for its tensile strength and spring-back memory. They are suited for light-to-medium duty applications such as cabinet hinges, appliance latches, and instrument mechanisms that cycle regularly under moderate loads.
The silver variants carry a zinc-plated finish that resists surface oxidation in dry indoor environments. The black variants use a phosphate or oxide coating for similar protection. Neither finish is rated for prolonged outdoor or high-humidity exposure — for wet environments, consider stainless steel alternatives.
Torsion springs are wound in a specific direction (left-hand or right-hand). Please confirm the wind direction required by your mechanism before ordering. If you need clarification on which variant matches your application, contact us to confirm.
Beyond finish color, the two variants differ in dimensional profile. The silver spring (8.3 × 12.6 mm) has a larger outer diameter suited to wider housings. The black spring (0.5 × 6 × 2.5 × 18 mm) features a finer wire diameter and longer leg, making it ideal for compact precision assemblies such as electronic enclosures and small instrument mechanisms.
For a single repair or prototype, the 20 PCS (silver) or 50 PCS (black) packs provide a cost-effective starting point. Workshop technicians and repair shops handling multiple units regularly will find the 60–150 PCS packs more economical per piece. Select the quantity that matches your expected usage volume.
These springs are compatible with standard torsion spring seats accepting the listed outer diameters and wire gauges. Always verify your hinge assembly's seat bore and leg slot dimensions against the variant specs before purchasing to ensure a proper fit.
