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When a worn or undersized torsion spring causes your switch lever, control arm, or mechanical assembly to lose its return force, finding the right replacement in the right geometry can be a real challenge. These stainless steel torsion springs are engineered for engineers, technicians, and serious DIYers who need reliable rotational force in compact spaces — available in a wide matrix of angles, coil counts, and outer diameters to match your exact application.
Each spring is wound from 1.2mm stainless steel wire with outer diameters ranging from 8mm to 15mm (approx. 0.31" to 0.59"). Coil counts span 1 to 5 turns, and winding direction is available in both left-hand and right-hand configurations. Rotation angles cover 45°, 60°, 90°, 120°, 180°, and 270°, giving you precise torque delivery across a broad range of deflection requirements.
These stainless steel torsion springs are well-suited for switch lever return mechanisms, control panel assemblies, door latch systems, and light-duty industrial automation components — anywhere a compact, corrosion-resistant rotational spring is needed.
Wound from corrosion-resistant stainless steel wire for durability in humid or exposed environments.
Four outer diameter options (8mm, 10mm, 12mm, 15mm) to fit a variety of shaft and housing sizes.
Available in 45°, 60°, 90°, 120°, 180°, and 270° to deliver the exact torque deflection your application requires.
Choose from 1 to 5 coils to tune spring rate and overall spring length for your assembly.
Both left-hand (Linke Feder) and right-hand (Rechte Feder) winding directions stocked for directional compatibility.
Stainless steel construction resists rust and oxidation, extending service life in demanding conditions.
| Wire Diameter | 1.2mm (approx. 0.047") |
|---|---|
| Outer Diameter (OD) | 8mm / 10mm / 12mm / 15mm (approx. 0.31"–0.59") |
| Number of Coils | 1 / 2 / 3 / 4 / 5 |
| Rotation Angle | 45° / 60° / 90° / 120° / 180° / 270° |
| Wind Direction | Left-hand (Linke Feder) / Right-hand (Rechte Feder) |
| Material | Stainless Steel |
| Finish | Natural / Uncoated |
| Spring Rate | See variant options |
| Free Length | See variant options |
| Leg Style | See variant options |
The outer diameter (OD) should be selected based on the shaft or housing bore your spring will wrap around. As a general rule, the spring's inner diameter (ID = OD minus 2× wire diameter) should be slightly larger than the shaft it sits on to allow free rotation. For a 1.2mm wire spring, the ID is approximately OD minus 2.4mm. Choose from 8mm, 10mm, 12mm, or 15mm OD options above.
Wind direction determines which way the spring coils when viewed from the end. A left-hand (Linke Feder) spring winds counter-clockwise; a right-hand (Rechte Feder) spring winds clockwise. The correct choice depends on the direction of torque application in your mechanism. Using the wrong wind direction can cause the spring to unwind rather than store energy.
More coils generally result in a lower spring rate (softer spring) and a longer body length. Fewer coils produce a stiffer spring with a shorter body. For a given wire diameter and OD, increasing coil count from 1 to 5 will reduce the torque per degree of deflection while increasing the total angular travel before the spring reaches its solid height.
Yes. These springs are wound from stainless steel, which offers good resistance to rust and oxidation compared to carbon steel springs. They are suitable for use in humid, wet, or mildly corrosive environments. For highly aggressive chemical environments, please contact us to confirm suitability.
The rotation angle refers to the angular deflection between the spring's two legs in the free (unloaded) state. Select the angle that matches the geometry of your mechanism's rest position. Common choices: 90° for right-angle lever returns, 180° for straight-leg configurations, and 270° for over-center mechanisms. If your application requires a specific torque at a specific deflection, please contact us for assistance.
These springs can serve as replacements provided the wire diameter (1.2mm), outer diameter, coil count, wind direction, and rotation angle match your original spring's specifications. We recommend measuring your existing spring's OD, counting the coils, and noting the wind direction before selecting a variant. If you are unsure, please contact us with your measurements.
The inner diameter (ID) is calculated as OD minus twice the wire diameter. For these 1.2mm wire springs: 8mm OD → approx. 5.6mm ID; 10mm OD → approx. 7.6mm ID; 12mm OD → approx. 9.6mm ID; 15mm OD → approx. 12.6mm ID. These are nominal values — actual dimensions may vary slightly due to manufacturing tolerances.
