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When a cabinet door won't snap shut, a tool clip loses its grip, or a small mechanism stops returning to position, the culprit is almost always a worn or incorrectly sized torsion spring. These small torsion springs are engineered for makers, repair technicians, and DIY enthusiasts who need a reliable, exact-fit replacement without ordering custom parts.
Each spring is formed from spring steel wire with diameters ranging from 0.3 mm to 3.5 mm (approx. 0.012"–0.138"). Outer diameters span 2 mm to 25 mm (approx. 0.08"–0.98"), with inner diameters from 1.4 mm to 19 mm (approx. 0.055"–0.75"). Return angles include 80°, 90°, 130°, 135°, 140°, and 180°, covering the most common mechanical configurations. Sold in packs of 3 or 5 pieces depending on the variant selected.
Typical use cases include small torsion spring replacement for door hinges and latches, return coil springs for electronic enclosures and battery compartments, and precision coil spring repair for hobby models, clocks, and light-duty mechanical assemblies requiring consistent angular return force.
Wire diameters from 0.3 mm to 3.5 mm and OD from 2 mm to 25 mm cover a broad spectrum of small torsion spring replacement needs in a single listing.
Available in 80°, 90°, 130°, 135°, 140°, and 180° configurations — select the angle that matches your original spring's return force direction.
Formed from spring steel wire for consistent elastic return, resistance to fatigue, and durability under repeated cycling in light-to-medium duty applications.
Variants include 1, 2, 3, 4, 5, 6, and 9 coil configurations, allowing you to match the original spring's body length and torque characteristics.
Available in 3-piece or 5-piece packs — keep spares on hand for future repairs or use multiple springs in the same assembly.
Every variant is labeled with wire diameter × outer diameter × inner diameter and coil count, making it straightforward to cross-reference against your original spring's measurements.
| Material | Spring steel wire |
|---|---|
| Wire Diameter Range | 0.3 mm – 3.5 mm (approx. 0.012" – 0.138") |
| Outer Diameter Range | 2 mm – 25 mm (approx. 0.08" – 0.98") |
| Inner Diameter Range | 1.4 mm – 19 mm (approx. 0.055" – 0.75") |
| Return Angles Available | 80°, 90°, 130°, 135°, 140°, 180° |
| Coil Count Options | 1, 2, 3, 4, 5, 6, 9 coils (varies by variant) |
| Pack Quantity | 3 PCS or 5 PCS (select above) |
| Spring Type | Torsion / Return coil |
| Finish | See variant options |
| Load Rating | See variant options |
| Surface Treatment | See variant options |
Measure your original spring's wire diameter, outer diameter (OD), inner diameter (ID), number of coils, and the angle between the two legs. Match all five parameters to the variant label shown as: wire dia. × OD × ID (coil count). If you are unsure, use a digital caliper for accuracy — even a 0.1 mm difference in wire diameter can affect torque and fit.
The angle refers to the angular position between the two spring legs in their free (unloaded) state. A 90° spring has its legs at a right angle; a 180° spring has its legs pointing in opposite directions. Choose the angle that matches the geometry of your original spring or the mechanism's design requirement.
These springs are made from spring steel wire, which provides good mechanical properties but may be susceptible to rust in prolonged wet or corrosive conditions. For outdoor or high-humidity applications, consider applying a light coat of machine oil or grease after installation to extend service life.
More coils generally mean a longer spring body and slightly lower spring rate (softer return force) for the same wire diameter and OD. Fewer coils produce a stiffer, shorter spring. Match the coil count to your original spring to replicate the original torque and body length as closely as possible.
The inner diameter should be slightly larger than the shaft or pin it wraps around — typically 0.1–0.3 mm clearance is acceptable for light-duty applications. If the ID is too tight, the spring will bind on the shaft; if too loose, it may shift during operation. Always verify the ID against your shaft diameter before ordering.
If you are replacing a single spring and want a spare, the 3-piece pack is sufficient. If you are working on multiple units, building an assembly that uses several springs, or want a larger backup supply, the 5-piece pack offers better per-unit value. Both packs contain identical springs — only the quantity differs.
Common applications include cabinet door hinges, battery compartment lids, tool clips, hobby model mechanisms, clock and timer assemblies, electronic enclosure latches, and any light-duty mechanism that requires a consistent angular return force. They are not intended for heavy industrial or high-load applications.
