Stainless Steel L-Leg & J-Hook Precision Torsion Spring
Applied to latch, buckle, and door hinge mechanisms, delivering precise torque through the combination of an L-leg and J-hook for reliable open-and-close return action.
Precision cold-wound from SUS304 stainless steel wire as a single integral unit, the compact coil body with few turns keeps the overall footprint small, making it ideal for tight assembly spaces. The L-leg end can be seated into a catch slot or braced against a stop plate to provide reaction force support, while the J-hook end allows quick attachment to a tab or linkage rod — the two end forms work together to achieve a clear functional division of "fixed-end positioning + active-end force transmission." The stainless steel body requires no additional corrosion treatment and is suitable for long-term use in consumer goods and light industrial applications. Two size variants cover different space requirements.
Asymmetric L-leg + J-hook end design with clear functional separation: fixed-end positioning and active-end force transmission.
SUS304 stainless steel body with natural corrosion resistance, suitable for consumer goods and food-adjacent applications.
Compact low-turn design minimizes overall footprint for tight precision assemblies.
Stable torque output with excellent fatigue resistance under high-frequency open-close cycling.
Two size variants in the same series for flexible selection and easy stock management.
Arm length, hook shape, wire diameter, and torque angle fully customizable per drawings.
Application areas: Luggage latch and buckle return / Door and window ball-catch spring clips / Electronic device snap-fit opening mechanisms / Hair clip and stationery clamp spring hinges / Small industrial lock linkage mechanisms
