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When a cabinet door won't stay closed, a tool clip loses its grip, or a mechanical assembly needs consistent rotational force, the culprit is almost always a worn or incorrectly sized torsion spring. Engineers, makers, and hands-on DIYers who need a reliable, dimensionally accurate replacement or upgrade rely on a spring that matches their exact wire diameter, outer diameter, coil count, and leg angle — not a generic approximation.
These torsion springs feature a 1.2mm wire diameter and are available in outer diameters ranging from 6mm to 12mm (approximately 0.24" to 0.47") with coil counts of 3, 6, or 9 turns. Each spring is wound from carbon steel wire and is offered in left-hand (LH) or right-hand (RH) wind, with leg angles of 60°, 90°, 120°, or 180° to suit a wide range of mounting configurations.
Typical applications include cabinet and furniture hinges requiring a 1.2mm wire torsion spring replacement, small appliance mechanisms needing a compact OD 6–12mm torsion spring, and precision DIY assemblies where a specific leg angle torsion spring — 60°, 90°, 120°, or 180° — is critical for correct function.
Consistent wire gauge across all variants ensures predictable torque output and reliable fit in standard spring seats and housings.
Outer diameters from 6mm (~0.24") to 12mm (~0.47") in 0.5mm increments cover a broad spectrum of shaft and bore sizes for both metric and mixed-standard assemblies.
Choose 3, 6, or 9 active coils to tune spring rate and angular deflection range — more coils yield a lower spring rate and greater travel before reaching the rated torque.
Select the leg angle that matches your assembly geometry. 90° and 180° suit most standard hinge and clip applications; 60° and 120° serve specialized mechanisms.
Both LH and RH wound versions are stocked. Matching wind direction to your application prevents unwanted coil binding and ensures correct torque direction.
Wound from carbon steel wire for a balance of strength and flexibility suited to indoor mechanical applications, tool clips, furniture hardware, and light-duty machinery.
| Wire Diameter | 1.2mm (0.047") |
|---|---|
| Outer Diameter (OD) | 6mm – 12mm (0.24" – 0.47"), see variant options |
| Coil Count | 3, 6, or 9 turns — see variant options |
| Leg Angle | 60°, 90°, 120°, or 180° — see variant options |
| Wind Direction | Left-hand (LH) or Right-hand (RH) — see variant options |
| Material | Carbon steel |
| Finish | Bare / natural steel |
| Spring Rate | See variant options |
| Free Angle | See variant options |
| Quantity per Order | 1 piece |
Measure the shaft or mandrel the spring will sit on. The spring's inner diameter (ID = OD minus twice the wire diameter) should be slightly larger than the shaft diameter to allow free rotation. For a 1.2mm wire spring, ID = OD − 2.4mm. For example, a 1.2 × 8mm spring has an ID of approximately 5.6mm, suitable for shafts up to about 5.4mm.
Wind direction determines which way the coils wrap. A right-hand (RH) spring winds clockwise when viewed from the leg end; a left-hand (LH) spring winds counter-clockwise. Using the wrong wind direction causes the coils to open (unwind) under load instead of closing, which reduces torque and can cause binding. Always match the wind direction to your mechanism's rotation.
More active coils lower the spring rate (force per degree of deflection), allowing greater angular travel before reaching maximum torque. Fewer coils produce a stiffer spring with less travel. For applications needing a gentle, progressive return force, choose 9 coils; for a firm, short-travel snap, choose 3 coils.
The leg angle is the angle between the two straight legs of the spring in its free (unloaded) state. Match this to the geometry of your assembly at rest. A 90° spring is common for cabinet hinges and right-angle clips. A 180° spring suits applications where both legs point in opposite directions. Measure the angle between your mounting points to confirm before ordering.
These springs are made from bare carbon steel without a protective coating, making them best suited for dry indoor environments. Exposure to moisture, humidity, or chemicals will cause surface rust over time. For outdoor or damp applications, consider stainless steel torsion springs or apply a protective coating after installation.
Yes. The 1.2mm wire diameter and OD range of 6–12mm are well matched to standard furniture hinge mechanisms, cabinet door clips, and small appliance return springs. Select the OD that fits your hinge pin, choose the correct leg angle to match the door's resting position, and confirm the wind direction matches the door's swing direction.
Before adding to cart, verify these five parameters against your existing spring or assembly drawings: (1) wire diameter — 1.2mm; (2) outer diameter — select from the variant dropdown; (3) coil count — 3, 6, or 9; (4) leg angle — 60°, 90°, 120°, or 180°; (5) wind direction — left or right. If you are replacing a worn spring, measure the original with calipers and count the coils carefully.
