Custom Torsion Springs – OEM Manufacturer for Industrial Use | Seme Hardware
Torsion Springs – Custom OEM Manufacturer for Industrial Applications
Custom Torsion Springs – Precision Wound for Reliable Rotational Force

Torsion springs are helical springs that exert rotational or twisting force when compressed or extended. Unlike compression or extension springs, torsion springs store and release angular energy, making them ideal for applications requiring controlled rotation, torque, and return force.
At Dongguan Seme Precision Hardware Co., Ltd. , we manufacture custom torsion springs to your exact specifications. From automotive door handles and garage door hinges to industrial machinery and medical devices, our torsion springs deliver consistent torque, long fatigue life, and reliable performance.
What Is a Torsion Spring?

A torsion spring works by twisting around its axis. When a force is applied to the legs, the spring winds tighter, storing mechanical energy. When the force is released, the spring returns to its original position, releasing the stored energy.
Key characteristics of torsion springs:

| Feature | Benefit |
Rotational force | Provides torque for rotating mechanisms |
Multiple leg configurations | Straight, offset, or custom bent ends |
Various winding directions | Left-hand or right-hand wound |
Customizable body length | Fits your specific assembly requirements |
Long fatigue life | Engineered for thousands of cycles |

Types of Torsion Springs We Manufacture
| Type | Description | Typical Applications |
Single Torsion SpringType Description | One coil body with two legs | Garage doors, hinges, clips |
Double Torsion Spring | Two coil bodies connected | Heavy-duty mechanisms, automotive seats |
Straight Leg Torsion Spring | Legs extending straight from coils | General industrial use |
Offset Leg Torsion Spring | Legs bent at angles | Custom mechanisms |
Torsion Spring with Hooks | Ends formed into hooks | Specialized assemblies |
Applications – Where Are Torsion Springs Used?

Our custom torsion springs are trusted across multiple industries:
Automotive Industry
Door handles and latches
Seat recliner mechanisms
Pedal return systems
Trunk and hood hinges
Industrial Equipment
Clamps and clips
Switch and relay mechanisms
Valve return springs
Conveyor systems
Garage Doors
Overhead garage door hinges
Counterbalance systems
Safety release mechanisms
Medical Devices
Surgical instruments
Diagnostic equipment
Patient positioning systems
Consumer Products
Hinges for cabinets and furniture
Toy mechanisms
Electrical switches
Technical Specifications – Fully Customizable

| Parameter | Options |
Material | Stainless Steel (SUS301, SUS304), High Carbon Steel (65Mn, Music Wire), Alloy Steel |
Wire Diameter | 0.2mm – 8.0mm (custom) |
Outer Diameter | 2mm – 80mm (custom) |
Body Length | 5mm – 300mm (custom) |
Number of Coils | 2 – 50+ (custom) |
Leg Configuration | Straight, offset, angled, hooked |
Winding Direction | Left-hand or right-hand |
Surface Finish | Zinc plating, black oxide, powder coating, passivation |
Torque Output | Custom calculated based on your application |
Material Options
| Material | Material Grade | Key Properties | Best For |
Stainless Steel | SUS301, SUS304 | Corrosion resistant, good fatigue life | Medical, marine, outdoor |
High Carbon Steel | 65Mn, Music Wire | High strength, cost-effective | Industrial, automotive |
Alloy Steel | Chrome Vanadium, Chrome Silicon | High performance, high cycle life | Heavy-duty, aerospace |
Surface Finishing Options:


Zinc plating – Standard corrosion protection
Black oxide – Basic protection, matte finish
Powder coating – Color options, durable
Passivation – For stainless steel
Why Choose Seme Hardware for Custom Torsion Springs?


✅ 10+ years of experience in precision spring manufacturing
✅ Full OEM customization – made to your drawing or sample
✅ Precision winding with tight tolerance control
✅ Heat treatment for strength and elasticity
✅ Fast sample turnaround – prototypes in 7–10 days
✅ Competitive pricing – factory direct
✅ Global shipping – to North America, Europe, Asia, and beyond
How to Order Custom Torsion Springs
Send your specifications – Provide drawing, sample, or parameters (wire diameter, OD, body length, coils, leg configuration, material, quantity)
Engineering evaluation – Our team reviews feasibility and provides DFM feedback
Sample production – We manufacture prototypes for your testing (7–10 days)
Mass production – Upon approval, proceed with bulk manufacturing
Inspection and delivery – 100% quality check before shipping
Frequently Asked Questions
1. What is the difference between torsion spring and compression spring?
A compression spring resists linear compression, while a torsion spring resists rotational or twisting force. Torsion springs are designed to be twisted, not pushed.
2. How do I determine the correct torsion spring for my application?
Key factors include: wire diameter, outer diameter, body length, number of coils, leg configuration, required torque, and operating angle. Send us your drawing or specs – we can help.
3. What is the minimum order quantity?
We accept small orders. MOQ depends on wire diameter and complexity. Contact us to discuss your needs.
4. How long does production take?
Samples: 7–10 days. Mass production: 15–25 days depending on quantity.
5. Do you provide samples before mass production?
Yes. We strongly recommend sample approval before mass production.
6. What materials are best for torsion springs?
Stainless steel for corrosion resistance, high carbon steel for strength and cost-effectiveness, alloy steel for high-performance applications.
7. Can you customize leg configurations?
Yes. Straight, offset, angled, or hooked ends – all can be customized to your assembly requirements.
Ready to Start Your Torsion Spring Project?
Send your drawing, sample, or specifications to receive:
OEM quotation
Sample lead time
Engineering feedback
📧 Email: [email protected]
📞 WhatsApp / WeChat: +86 186 6511 1545
Fast response | Custom solutions | Worldwide shipping
Related Pages
Proudly manufactured in Dongguan, China – shipped worldwide.
