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When a hinge creaks, a latch fails to snap back, or a mechanism loses its return force, the culprit is almost always a worn or incorrectly sized torsion spring. Hobbyists, makers, and repair technicians who need exact angular return force — without ordering custom parts — will find this range of steel torsion springs indispensable.
Each torsion spring is formed from spring steel wire ranging from 0.3 mm to 3.5 mm in diameter, with outer diameters spanning approximately 2 mm to 25 mm (roughly 0.08 in to 0.98 in). Coil counts vary from 1 to 9 rings depending on the selected size. Available in 80°, 90°, 130°, 135°, 140°, and 180° leg angles, sold in packs of 3 or 5 pieces.
Typical applications include DIY cabinet hinges requiring a 90° return spring, small appliance latch mechanisms needing a 180° torsion spring, model engineering and robotics projects calling for a miniature coil return spring, and repair work on clocks, tools, or precision instruments where a specific wire-diameter torsion spring is required.
Wire diameter 0.3–3.5 mm, outer diameter 2–25 mm — covers micro to medium-duty DIY applications in a single listing.
Available in 80°, 90°, 130°, 135°, 140°, and 180° configurations to match your mechanism's exact deflection requirement.
Formed from spring steel wire for consistent elastic return force and resistance to permanent deformation under repeated cycling.
Ring counts from 1 to 9 per variant — more coils provide greater angular travel and softer torque characteristics for delicate assemblies.
Choose a 3-piece or 5-piece pack to suit your project quantity — ideal for prototyping, repair stock, or small-batch production.
Compact form factor and precise dimensions make these springs easy to install in hinges, latches, clamps, and mechanical return mechanisms without special tooling.
| Spring Type | Torsion / Return Spring (Schenkelfeder) |
|---|---|
| Material | Spring Steel |
| Wire Diameter Range | 0.3 mm – 3.5 mm (0.012 in – 0.138 in) |
| Outer Diameter Range | 2 mm – 25 mm (0.08 in – 0.98 in) |
| Inner Diameter Range | See variant options |
| Coil / Ring Count | 1 – 9 rings (varies by size) |
| Leg Angle Options | 80°, 90°, 130°, 135°, 140°, 180° |
| Pack Quantity | 3 pieces or 5 pieces (select above) |
| Finish | See variant options |
| Recommended Use | Hinges, latches, clamps, DIY mechanisms, model engineering |
Match three key dimensions: wire diameter (determines torque strength), outer diameter (must clear your housing), and inner diameter (must fit over your shaft or pin). Then select the leg angle that matches your mechanism's required deflection — 90° for right-angle returns, 180° for straight-through returns, etc.
The leg angle is the angle between the two straight arms of the spring at rest. Choose 90° if your mechanism needs a quarter-turn return, 180° if the arms need to be parallel (straight), and 80°, 130°, 135°, or 140° for specific intermediate deflection requirements. Measure the angle your mechanism naturally holds when unloaded.
Torque strength increases with wire diameter and decreases with outer diameter and coil count. Thicker wire (e.g., 2–3.5 mm) provides significantly more return force than fine wire (0.3–0.5 mm). For light-duty applications such as small hinges or latches, 0.3–0.8 mm wire is typically sufficient. For heavier mechanisms, select 1.4 mm wire or above.
These springs are made from spring steel, which offers good mechanical properties but moderate corrosion resistance. For indoor or dry environments they perform reliably. For outdoor or humid applications, consider applying a light coat of oil or grease after installation to extend service life.
Torsion springs are typically wound in a specific direction (left-hand or right-hand). The winding direction affects which way the spring resists deflection. Please check the product images and confirm the winding direction matches your application before ordering. If you are unsure, contact us to confirm.
Both packs contain identical springs — the only difference is quantity. The 5-piece pack is suited for projects requiring spares or small-batch repairs. The 3-piece pack is ideal for single-unit repairs or prototyping where fewer springs are needed.
Slide the spring coil over the hinge pin or shaft so the inner diameter fits snugly without binding. Position one leg against a fixed surface and the other against the moving part. Deflect the spring to the required angle and secure both legs. No special tools are required for most DIY installations — needle-nose pliers are sufficient for small wire diameters.
