Coiled Springs
Coil springs are mechanical components fabricated from metal wire wound into a continuous spiral or corkscrew shape. They deform elastically under an applied load, providing a counteractive force that returns the spring to its original length upon unloading.
Century Spring stocks a huge selection of coil springs across compression, extension, and torsion spring types. With 55 million springs ready to ship from our USA-based inventory, we offer the world's largest spring selection, and our design experts can customize a spring tailored to your specific application in any quantity, from prototype to full production.
Shop In-Stock Coiled Springs
Browse our online catalog, which features our most popular in-stock coil springs that ship same-day from our US-based inventory of over 55 million springs! You can filter by spring rate, wire diameter, outer diameter, free length, material, and more to find the exact spring that fits your needs.
You can order springs in any quantity: from single springs for your prototype builds to wholesale-priced production part volumes.
Types of Coiled Springs We Manufacture
Century Spring is a premier manufacturer of stock, standard, and custom coil springs, delivering high-performance components engineered for applications across virtually every major industry.
We manufacture hundreds of varieties of coil springs across three primary families: Compression springs resist pushing forces that cause the spring to shorten. Extension springs resist pulling forces that must overcome an initial tension that keeps the coils tightly closed until extension begins. Torsion springs resist rotational forces about the spring’s coil axis and provide precision control of rotational force and motion.
For more demanding envelopes, we offer specialized designs—including high-load die springs, garter springs, tapered/barrel springs, drawbar springs, and both hot- and cold-wound variations. Crucially, our products can be manufactured to meet rigorous, audited industry-specific standards, such as AS9100D for aerospace, ISO 13485 for medical devices, and custom automotive PPAP requirements.
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Hot Wound Springs -
Cold Wound Springs -
Antenna Springs & Assemblies -
Garter Springs -
Drawbar Springs
Custom Coiled Springs
Century Spring manufactures custom coil springs to your specifications. We work with all conventional spring materials, as well as specialty, high-temperature, and titanium alloys, with wire sizes from 0.004″ to 3.00″. Our multi-slide forming equipment can also produce complex hook-and-leg geometries for extension and torsion springs, complete off the machine.
Our expertise extends to world-class design, prototyping, and testing services. We provide all the tools and expertise you need to validate your custom spring’s spring rate, lifecycle requirements, and material choice, using tools like our compression spring calculator for your actual design conditions, to prove the concept before moving into full production.
Request a custom quote today and let our experts work alongside you to develop springs that meet or exceed your expectations for cycle life, hardness, resistance to environmental factors, and more.
What Our Customers Are Saying
“We are very pleased with our service. My emails are responded to promptly & lead times are pretty much spot on.”
“We needed springs for our new design and the customer service rep helped put us on the right path.”
“Company is great and always keeps you informed of product delays (usually does not have any) and shipping status.”
Custom Manufacturing
Related Manufacturing Services
In addition to standard engineering and manufacturing services, we offer a range of additional value-added services to streamline your procurement process and ensure your custom components perform reliably in assembly.
By leveraging these capabilities into your development process—including rapid prototyping, custom heat treating, and specialized surface finishing—we can significantly shorten your product development cycles and consolidate your supplier base under a single, quality-certified partner.
Some examples of our related manufacturing services are listed below.
Finishing Services
We also offer a range of secondary finishing services to ensure your coiled spring achieves your desired look, feel, and performance. Applying the right surface treatment establishes a critical line of defense against premature failure, dramatically improving your spring's corrosion resistance, wear mitigation, and fatigue life under repetitive cyclic loading.
Ultimately, whether you leverage custom plating to optimize electrical conductivity, shot peening to enhance durability, or color-coded dyeing to streamline part identification during assembly, these value-added services are designed to elevate the long-term reliability and safety of your system.
Materials
Century Spring can stock many standard and specialty spring materials by leveraging the resources of our 30+ manufacturing facilities that operate dedicated specialty product lines serving everything from aerospace to consumer product markets. Selecting the right material is a critical design step because your alloy choice directly drives how well the spring performs under extreme operating temperatures, corrosive environments, and demanding cycle-life conditions.
By matching the precise metallurgical properties of our high-strength carbon steels, corrosion-resistant stainless alloys, or heat-resistant nickel-based superalloys to your mechanism, you prevent premature wear and fatigue failure, ensuring a long, reliable operational lifespan.
Quality Standards & Certifications
At Century Spring, we pride ourselves on creating quality products that exceed industry standards. In addition to performing tailored quality assurance testing and compliance with your specified requirements, we also maintain several key certifications to ensure that only the best products are shipped to you. To support the rigorous compliance and traceability requirements of highly regulated, safety-critical industries, our quality management system is fully certified to ISO 9001 and AS9100D for aerospace parts, and ISO 13485 for medical devices and equipment. We also support the rigorous Production Part Approval Process (PPAP) for automotive components.
Custom springs under these certifications undergo meticulous first-article, in-process, and final inspections to guarantee complete material traceability and dimensional conformity. Additionally, we provide comprehensive engineering documentation and application test support to validate that every production run consistently meets your precision design and quality specifications.
Have Questions?
Have questions about choosing the right coil spring for your application?
Century Spring has all the technical expertise needed to answer all your questions. Established in 1927 right here in the USA, we have established ourselves as a premier supplier of high-quality springs and wire form products for the Maintenance, Repair, and Operations (MRO) industries and have earned the trust of the largest OEMs across numerous industries.
When you contact us, you won't just talk to an automated phone menu—our live, experienced product design engineers are directly available by phone or email to assist you with material selection, technical design constraints, and custom load calculations.
Contact us and let our experts help you find or custom-manufacture the perfect spring for you.