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When a mechanism needs reliable rotational force and your existing spring has lost tension or snapped under load, finding the exact replacement is frustrating. These left-hand torsion springs are engineered for DIYers, repair technicians, and mechanical hobbyists who need a precise, corrosion-resistant solution without compromise.
Each spring is formed from 0.9mm stainless steel wire with an outer diameter ranging from 5mm to 11mm (approximately 0.20" to 0.43"). Coil counts run from 1 to 5 turns, and the left-hand wind direction is consistent across all variants. Leg angles span 45°, 60°, 90°, 120°, 180°, and 270°, giving you fine control over the torque arm geometry.
These left-hand torsion springs suit a wide range of applications: replacing worn garage door torsion springs in compact mechanisms, restoring tension in cabinet hinges and latch assemblies, and providing precise return force in custom jigs, fixtures, and small-scale automation projects where a left-hand coil direction is mechanically required.
| Wire Diameter | 0.9 mm |
|---|---|
| Outer Diameter (OD) | 5 mm – 11 mm (≈ 0.20" – 0.43") |
| Coil Count | 1 – 5 coils (see variant options) |
| Leg Angle | 45° / 60° / 90° / 120° / 180° / 270° (see variant options) |
| Wind Direction | Left-hand |
| Material | Stainless Steel |
| Finish | Bright / natural stainless |
| Quantity per Pack | 5 pieces |
| Spring Rate | See variant options |
| Free Angle | See variant options |
Measure the shaft or bore your spring will sit on or around. For a spring mounted on a shaft, the inner diameter (OD minus twice the wire diameter) should be slightly larger than the shaft. For a spring inside a bore, the OD should be slightly smaller than the bore. Use the OD options (5–11mm) as your starting point and cross-reference with your shaft size.
A left-hand wound torsion spring coils in a counter-clockwise direction when viewed from the right end. It tightens (stores energy) when torque is applied clockwise. If your original spring coils counter-clockwise when you look at it from the front, you need a left-hand spring. If it coils clockwise, you need a right-hand spring — this listing is left-hand only.
The leg angle is the angle between the two straight legs of the spring when it is in its free (unloaded) state. Measure the angle between your mechanism's two contact points when the spring is relaxed. Common choices: 90° for right-angle hinges, 180° for straight-line return mechanisms, and 270° for applications requiring a large pre-load sweep. If unsure, 90° is the most versatile starting point for most hinge and latch applications.
More coils generally mean a lower spring rate (softer spring) and greater angular deflection capacity before the spring reaches its elastic limit. Fewer coils produce a stiffer spring with less travel. Match the coil count to your original spring if replacing one, or select based on the torque and deflection your application requires. 1–2 coils suit light-duty latches; 4–5 coils are better for mechanisms needing smooth, extended rotation.
Yes. Stainless steel offers good resistance to rust and oxidation in typical outdoor, humid, and lightly wet conditions. For highly corrosive environments (salt spray, chemical exposure), consider additional protective measures or consult a materials specialist. For standard garden, garage, or workshop use, stainless steel is a reliable choice over carbon steel alternatives.
These springs are compact (OD 5–11mm, wire 0.9mm) and are suited for small mechanisms, cabinet hardware, and light-duty applications — not full-size residential garage doors, which require much larger springs with significantly higher torque ratings. They are appropriate for small garage door models, tool box lids, or similar compact mechanisms where the spring dimensions match.
For the same wire diameter and OD, a spring with more coils has a lower spring rate (requires less force per degree of rotation) but can store more total energy over a larger angular range. A spring with fewer coils is stiffer — it resists rotation more per degree. Choose fewer coils for firm, snappy return action and more coils for smooth, gradual force application.
