500 stainless steel micro-compression spiral torsion springs for various metals available for bulk customization.

Auto Parts Field: Custom door hinge torsion springs, steering system torsion springs; 50CrVA carbon steel (high fatigue resistance) or 316L stainless steel (corrosion resistance); stable torque reduces vibration, suitable for passenger/commercial/engineering vehicles; Embroidery Machine Field: Custom thread take-up torsion springs, needle bar reset springs; 65Mn carbon steel (precise torque control, deviation 2%); ensures uniform stitching,industrial/computerized embroidery machines Solenoid Valve Field: Custom valve core torsion springs, return torsion springs; 316 stainless steel (corrosion resistance to oil/water/chemicals); fast response (0.05s), suitable for hydraulic/pneumatic/electronic solenoid valves..syi