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When a hinge creaks, a lid won't stay open, or a mechanism loses its return force, the culprit is almost always a worn or incorrectly sized torsion spring. Engineers, makers, and hands-on DIYers who need a reliable, configurable torsion spring in a compact form factor will find this 1.6mm wire torsion spring an indispensable addition to their parts inventory.
Each spring is formed from 1.6mm diameter wire wound into a left-hand coil body with an outer diameter ranging from 10mm to 18mm (approximately 0.39" to 0.71"). Coil counts of 1, 2, 3, 4, or 5 are available, and leg angles span 45°, 60°, 90°, 120°, 180°, and 270°, giving you precise control over the torque and deflection characteristics you need.
Typical applications include cabinet door hinges requiring controlled return force, small appliance lid mechanisms needing a torsion spring for DIY repair, custom robotics and automation assemblies where a compact left-hand torsion spring is specified, and jig or fixture designs that demand repeatable angular preload.
1.6mm Wire Diameter — Consistent wire gauge across all variants ensures predictable spring rate and fatigue life for light-to-medium duty applications.
10–18mm Outer Diameter Range — Five OD options (10, 12, 14, 16, 18mm / 0.39"–0.71") let you match the spring to your shaft and housing dimensions without custom fabrication.
1–5 Coil Options — More coils increase angular deflection capacity and reduce spring rate; fewer coils deliver stiffer, shorter-travel return force. Choose the coil count that fits your mechanism's travel.
Six Leg Angles: 45°–270° — Leg angles of 45°, 60°, 90°, 120°, 180°, and 270° cover the full range of common torsion spring mounting configurations, from tight-clearance hinges to wide-open lever returns.
Left-Hand Wind — All variants feature left-hand (counterclockwise) winding, suitable for applications where the spring is loaded in the left-hand direction.
Versatile DIY & Repair Use — Sized for cabinet hinges, small appliance lids, robotics linkages, jig fixtures, and general mechanical assemblies where a compact torsion spring is required.
| Wire Diameter | 1.6mm (0.063") |
|---|---|
| Outer Diameter | 10mm / 12mm / 14mm / 16mm / 18mm (see variant options) |
| Number of Coils | 1 / 2 / 3 / 4 / 5 (see variant options) |
| Leg Angle | 45° / 60° / 90° / 120° / 180° / 270° (see variant options) |
| Wind Direction | Left-hand (counterclockwise) |
| Material | See variant options |
| Finish / Coating | See variant options |
| Spring Rate | See variant options |
| Free Angle | See variant options |
| Inner Diameter | See variant options |
| Body Length | See variant options |
The outer diameter (OD) should be slightly smaller than the housing bore that will contain the spring, and the inner diameter (ID) should be slightly larger than the shaft the spring rides on. For this 1.6mm wire series, ODs range from 10mm to 18mm. Measure your shaft and housing, then select the OD that provides a small clearance on both sides. If you are unsure, contact us to confirm before ordering.
The number of active coils directly affects the spring's angular deflection capacity and stiffness. Fewer coils (1–2) produce a stiffer spring with less angular travel before reaching maximum load. More coils (4–5) allow greater angular deflection at a lower spring rate, making them suitable for mechanisms that need a longer, softer return stroke. Choose based on the angular travel your mechanism requires and the torque you need at that deflection.
The leg angle is the angle between the two straight legs of the torsion spring when it is in its free (unloaded) state. A 90° spring has legs perpendicular to each other; a 180° spring has legs pointing in opposite directions. Choose the leg angle that matches the geometry of your mounting points so the spring is neither pre-stressed nor under-loaded when installed in its neutral position.
Corrosion resistance depends on the material and finish of the specific variant. Please refer to the variant options or contact us to confirm the material and surface treatment for your chosen size. For outdoor or high-humidity environments, we recommend selecting a variant with a corrosion-resistant finish or material.
Left-hand (counterclockwise) wind means the coil body wraps in a counterclockwise direction when viewed from the leg end. This determines which direction of rotation loads the spring. If your mechanism applies torque in the clockwise direction (when viewed from the same end), a left-hand spring is the correct choice. If your mechanism applies counterclockwise torque, you would need a right-hand spring. All variants in this listing are left-hand wind.
Yes. The 1.6mm wire diameter and 10–18mm OD range make these springs well-suited for light-duty cabinet door hinges, small appliance lid return mechanisms, and similar applications where a compact torsion spring is needed. Select the OD and coil count that match your hinge pin diameter and the required return torque.
Before ordering, measure your shaft diameter (to check against the spring's inner diameter), your housing bore (to check against the OD), the available body length (to check against the coil count and wire diameter), and the angle between your mounting points (to select the correct leg angle). If you need help confirming fit, contact us with your measurements and we will advise the correct variant.
