302 stainless steel coil spring automotive seat belt assembly coil spring motor spring processing and customization factory
Upgrade Your Automotive Seatbelt Systems with Custom 302 Stainless Steel Motor Springs
When it comes to automotive safety components, every detail matters. Our 302 Stainless Steel Volute Spring for car seatbelt assemblies offers superior performance and durability for your vehicle's critical safety systems.

Premium Quality Materials
Manufactured from high-grade 302 stainless steel, these torsion springs provide excellent corrosion resistance and fatigue life. The material selection ensures reliable performance even in demanding automotive environments.
Custom Specifications Available
While this particular model features:
- Outer Diameter: 40mm
- Height: 7mm
- Width: 7mm
We offer customization options to meet your specific requirements. Our springs undergo surface treatments including blackening and zinc plating for enhanced durability.
Precision Engineering for Safety Applications
Designed specifically for automotive seatbelt retractor mechanisms, these volute springs provide consistent torque and smooth operation. The precise manufacturing process ensures reliable performance that meets stringent automotive safety standards.
Global Supply Capabilities
As an established manufacturer with our own brand (Huihuang Spring), we're capable of supplying to markets worldwide. Whether you need samples for testing or bulk orders for production, we can accommodate your needs.
Why Choose Our Motor Springs?
- Non-standard custom designs available
- Multiple material options
- Surface treatments for corrosion protection
- Precision manufacturing for consistent performance
- Direct factory pricing
For OEMs looking to upgrade their seatbelt systems or replacement part suppliers seeking high-quality components, our 302 stainless steel motor springs offer the perfect combination of performance and value.
Contact us today to discuss your specific requirements or to request samples of our automotive-grade volute springs.