Zinc-Plated Double Helix Twin-Coil Torsion Spring
Integrally formed from a single wire into a twin-coil structure, delivering higher torque output than a single-coil spring within the same installation footprint — widely used in furniture hinges and door lock return systems.
Integrally cold-formed from high-quality carbon steel wire, the twin spiral coils coexist in a single spring body sharing a middle arm or two outer straight legs — no welded joints, uniform strength throughout. The dual-coil design nearly doubles torque capacity compared to a single-coil spring while maintaining a compact overall footprint, making it ideal for applications with limited space but high torque requirements. Zinc plating provides reliable corrosion protection for furniture hinges, door and window locks, and various daily hardware open-close return functions.
Twin-coil integral forming provides approximately double the torque capacity of a single-coil spring of equivalent size.
No welded joints — uniform overall strength and superior fatigue life over welded or assembled structures.
Zinc plating for moisture and corrosion resistance in both indoor and outdoor applications.
Straight leg ends on both sides for easy pin-mount or slot insertion assembly.
Left-hand or right-hand winding and arm angles fully customizable per customer drawings.
Wire diameter, coil diameter, arm length, and torque angle all support full customization.
Application areas: Furniture cabinet door hinge return / Door lock spring clips and cylinder return / Automotive interior snap mechanisms / Industrial fixture dual-torque output / Daily hardware open-close spring assemblies
