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If your trash can lid, cabinet hinge, or DIY mechanism keeps failing to snap back into position, the culprit is almost always a worn or incorrectly specified torsion spring. Engineers, makers, and home improvement enthusiasts who need a dependable, repeatable return force rely on precision-wound torsion springs — and getting the wire diameter, outer diameter, coil count, and leg angle exactly right is what separates a smooth-operating lid from a frustrating one.
These V-type rotating torsion springs are wound from carbon steel wire with a wire diameter of 1.5 mm (0.059 in). Outer diameters span 8–20 mm (0.31–0.79 in) and coil counts range from 3 to 9 turns, giving you precise control over spring rate and deflection. Each spring is available in left-hand or right-hand wind and in leg angles of 60°, 90°, 120°, or 180° to match your exact mounting geometry.
Typical applications include trash can lid return mechanisms, flip-top storage box hinges, lightweight door closers, and custom DIY torsion spring assemblies where a compact V-type hairpin profile is required. Whether you are replacing a broken torsion spring on a pedal bin or engineering a new mechanism, these springs provide consistent torque across the full range of coil and angle combinations.
Wound from 1.5 mm (0.059 in) carbon steel wire for consistent spring rate and reliable return force across all coil and angle variants.
Outer diameters from 8 mm to 20 mm (0.31–0.79 in) and coil counts of 3, 6, or 9 turns let you dial in the exact torque and deflection your application needs.
Available in both left-spring and right-spring configurations so you can match the rotation direction of your mechanism without modification.
Choose from 60°, 90°, 120°, or 180° leg angles to suit your mounting geometry — no bending or re-forming required.
Made from carbon steel wire offering good tensile strength and fatigue resistance for repeated open-close cycling in household and light-industrial applications.
The compact V-type hairpin body fits neatly into standard trash can lid pivot points and similar hinged cover assemblies, making replacement straightforward.
| Wire Diameter | 1.5 mm (0.059 in) |
|---|---|
| Outer Diameter Range | 8–20 mm (0.31–0.79 in) |
| Coil Count Options | 3, 6, or 9 coils |
| Leg Angle Options | 60°, 90°, 120°, 180° |
| Wind Direction | Left spring / Right spring |
| Material | Carbon steel |
| Finish | See variant options |
| Spring Rate | See variant options |
| Free Angle | See variant options |
| Quantity per Order | 1 piece |
Measure the inner diameter of your existing spring or the pivot pin diameter in your mechanism. The spring's inner diameter (outer diameter minus twice the wire diameter) should slide over the pin with minimal clearance. For coil count: more coils give a lower spring rate (softer return), fewer coils give a higher spring rate (firmer return). Match the coil count to the torque your lid or cover requires.
Wind direction determines which way the spring tightens when deflected. A left-hand (left spring) winds counter-clockwise when viewed from the leg end; a right-hand (right spring) winds clockwise. To identify which you need, look at your existing spring from the coil end — if the wire winds away to the left, you need a left spring; if it winds to the right, you need a right spring.
Most standard pedal-bin and flip-top trash can lids use a 90° or 180° leg angle. If the two legs of your original spring form a right angle at rest, choose 90°. If they are parallel (pointing in opposite directions), choose 180°. For custom or non-standard mechanisms, measure the angle between the two legs of your existing spring at its natural (unloaded) position.
These springs are made from carbon steel, which offers good mechanical strength but has limited inherent corrosion resistance. For outdoor or high-humidity applications, consider applying a light coat of machine oil or grease after installation to extend service life. If long-term corrosion resistance is critical, contact us to confirm whether a coated or stainless variant is available.
Yes. The V-type hairpin torsion spring profile is widely used in cabinet hinges, lightweight door closers, flip-top storage boxes, tool holders, and custom DIY mechanisms. As long as the wire diameter, outer diameter, coil count, leg angle, and wind direction match your design requirements, these springs are suitable for any application that needs a compact torsion return element.
Spring rate for torsion springs depends on wire diameter, outer diameter, coil count, and material modulus. If you need a specific torque value (e.g., in N·mm/degree), please contact us with your requirements and we can advise on the closest matching variant or provide calculated spring rate data for the size you are considering.
Each order contains 1 piece (one spring). If you need a matched pair — for example, one left spring and one right spring for a symmetrical lid mechanism — please add both variants to your cart separately.
