Custom Springs Engineered for Demanding Industrial Applications
Standard, off-the-shelf springs often fall short when applications involve tight dimensional constraints, extreme environments, or demanding load requirements. Coiling Technologies addresses these challenges by manufacturing custom springs that meet precise performance, material, and lifecycle specifications. As an ISO certified custom springs manufacturer, we support OEMs and industrial customers that require reliability, repeatability, and engineered-to-order solutions.
Every custom spring is developed around real-world operating conditions, including physical dimensions, operating temperature, humidity, corrosion exposure, cycle life, and special end configurations. These variables are rarely satisfied by stock products, which is why custom-made springs are essential for mission-critical applications.
What Is a Custom Spring?
A custom spring is engineered specifically for its intended application rather than selected from a catalog. Custom coil springs are designed by evaluating load requirements, spring rate, available space, environmental exposure, and assembly constraints.
At Coiling Technologies, we design springs using a wide range of geometries and cross-sections—including square, rectangular, oval, and tapered profiles—to achieve optimal performance. This flexibility allows us to improve durability, reduce stress concentrations, and extend service life in applications where conventional designs fail.
Industries That Rely on Custom Springs
We specialize in manufacturing custom springs used in extreme and high-load environments across a wide range of industries, including:

- Oil and gas
- Chemical and petrochemical processing
- Military and defense systems
- Aircraft and aerospace equipment
- Marine and offshore environments
- Automotive suspension and vibration isolation
- Valves, actuators, and industrial machinery
These industries depend on precision spring performance under continuous cycling, heavy loads, and harsh conditions, making a custom spring manufacturer with advanced material expertise essential.
Custom Coil Spring Materials
Material selection plays a critical role in spring performance. Coiling Technologies maintains a broad inventory of high-quality raw materials and offers the flexibility to support short-lead-time prototypes as well as long-term production programs.
Common materials include:
- Carbon and alloy steels
- Copper-based alloys
- Stainless steels
- Inconel and other nickel-based superalloys
- Specialty and exotic materials for extreme environments
Our engineers work directly with customers to evaluate operating conditions and select materials that meet strength, fatigue, corrosion resistance, and temperature requirements. This collaborative approach ensures every custom coil spring is matched to its application.
Customized Spring Manufacturing Process
For more than 45 years, Coiling Technologies has maintained a high standard of quality and service in the spring industry. As a trusted custom spring manufacturer, we provide engineering assistance throughout the design and production process.
Our capabilities include:
- Design support and application review
- Prototype development and validation
- CNC coiling and forming
- Heat treating and shot peening
- Magnetic particle inspection and cycle testing
- Powder coating and specialty surface treatments
Each custom spring design is reviewed with the customer prior to production to confirm performance, tolerances, and fit within the intended assembly.
Why Choose Coiling Technologies for Custom Springs
Customers choose Coiling Technologies because we deliver engineered solutions, not catalog parts. Our advantages include:
- ISO 9001 certification for consistent quality
- Experience producing small and large custom springs
- Expertise in exotic alloys such as Inconel and Rene 41
- Flexible manufacturing systems for low-volume prototypes or high-volume production
- In-house testing and quality control
From industrial equipment to aerospace assemblies, we support customers that require precision, durability, and repeatability.
Request a Quote Today
If your application requires custom springs designed to meet exact specifications, Coiling Technologies has the expertise and manufacturing capability to support your project. Still have questions? Contact our engineering team to discuss your custom spring requirements.
Custom Spring FAQs
When should I choose a custom spring instead of a standard spring?
Choosing custom springs allows you to meet specific requirements that standard products cannot accommodate, including precise load and spring rate targets, tight dimensional constraints, specialized end coils, material upgrades for high temperature or corrosive environments, and high-cycle or high-performance demands. Custom springs also support unique mechanism dimensions and assembly constraints.
Do you provide engineering and design support?
Yes. As an experienced custom spring manufacturer, we support customers throughout the R&D process. Engineering support may include prototype development, material selection, testing, and design consultation tailored to your application requirements.
Can you duplicate or reverse engineer an existing spring?
Yes. We can reverse engineer most springs from a sample supplied. Dimensional measurements, drawings, and sketches can be created based on the sample, and in many cases, the design can be improved to enhance durability and overall performance.



