Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
When a standard spring fails to hold its angle or loses tension after repeated cycling, the culprit is almost always inferior material or an imprecise coil geometry. Engineers, toolmakers, and DIY builders who need a reliable torsion spring for hinges, clamps, levers, or return mechanisms will find this range covers the most common wire and outer diameter combinations — with the added benefit of stainless steel corrosion resistance.
Each spring is wound from 0.8 mm (approx. 0.031 in) stainless steel wire. Outer diameters span 4 mm to 10 mm (approx. 0.16 in – 0.39 in), and coil counts are available in 3, 6, or 9 turns. Leg angles are offered at 60°, 90°, 120°, and 180°. Both left-hand (Linke Federn) and right-hand (Rechte Federn) winding directions are stocked.
Typical use cases include door and cabinet hinge return springs, small clamp and clip mechanisms, electronic enclosure latches, and precision instrument assemblies where a compact torsion spring with a defined leg angle is required.
| Material | Stainless steel wire |
|---|---|
| Wire Diameter | 0.8 mm (approx. 0.031 in) |
| Outer Diameter Range | 4 mm – 10 mm (approx. 0.16 – 0.39 in) |
| Coil Count Options | 3, 6, or 9 active coils |
| Leg Angle Options | 60°, 90°, 120°, 180° |
| Winding Direction | Left-hand (Linke Federn) / Right-hand (Rechte Federn) |
| Spring Rate | See variant options |
| Max Torque | See variant options |
| Surface Finish | Natural stainless (no coating) |
| Quantity per Order | 1 piece |
Measure the shaft or pin your spring will wrap around. The inner diameter of the spring (outer diameter minus twice the wire diameter, i.e. OD − 1.6 mm) should be slightly larger than the shaft to allow free rotation. For example, a spring with a 6 mm outer diameter has an inner diameter of approximately 4.4 mm, suitable for a 4 mm shaft.
Left-hand (Linke Federn) springs wind counter-clockwise when viewed from the leg end; right-hand (Rechte Federn) springs wind clockwise. The correct choice depends on the direction your mechanism rotates to load the spring. Loading a spring in the wrong direction will unwind the coils and reduce clamping force rather than increase it.
More active coils (e.g. 9 vs. 3) lower the spring rate, meaning the spring deflects more per unit of applied torque. A 9-coil spring is more flexible and can absorb greater angular displacement before reaching its elastic limit. A 3-coil spring is stiffer and returns to position more forcefully over a shorter arc.
Stainless steel offers good resistance to atmospheric moisture and mild corrosion. These springs are suitable for indoor humid environments and sheltered outdoor applications. For fully exposed marine or chemical environments, verify the specific stainless grade meets your requirements before use.
The leg angle is the angle between the two straight legs of the spring in its free (unloaded) state. Select the angle that matches your assembly's geometry when the spring is at rest. Common choices: 90° for right-angle brackets, 180° for flat-mounted return springs, 60° or 120° for compact mechanisms with limited clearance.
Yes. The small wire diameter (0.8 mm) and compact outer diameters (from 4 mm) make these springs well-suited for instrument panels, electronic enclosure latches, and small actuator return mechanisms. Confirm the required torque and angular travel against the spring's coil count and outer diameter before finalising your selection.
Each order is for one (1) spring. Select your required wire/outer diameter combination, leg angle, and winding direction from the variant options above, then add the quantity you need to your cart.
