Get unique, complex parts easily. No matter your requirements, Master Spring creates hard-to-produce coil springs and wire forms.
Let us help you create the custom wire form you need, from S-hooks and J-hooks to utility hooks and more.
We work closely with customers across a wide range of industries, helping them design and manufacture made-to-order parts.
Why choose Master Spring? We prioritize customer-focused collaboration, modern equipment and the latest technology to make your parts per print.
Find the information and guidance you need, from measuring a spring to learning about materials, placing an order and much more.
Extension springs store energy and exert a pulling force between two mechanisms. When mechanisms separate, the extension spring tries to bring them together again. Extension springs use round wire to create a close-wound design with initial tension.
Contact UsAn extension spring’s ends attach between two mechanisms. The extension springs hooks and loops store and absorb energy. Through hooks or loops, an extension spring provides return force to connected mechanisms.
Tightly wound extension springs typically sit in the no-load position. More stress in the end hooks—as opposed to the spring body—limits the performance of extension springs.
Extension springs use a variety of hook or loop end configurations to fit specific functions. Extension spring ends include threaded inserts, extended twist loops, crossover center loops, hooks, expanded eyes, reduced eyes, rectangular ends and teardrop-shaped ends.
Modify the length of hooks and the spring body distance for customized extension spring fits and functions.
Find extension springs in a variety of everyday items, from garage doors to tools to washing machines to toys. The variety in size makes extension springs versatile as they are used in small medical devices and off-road machinery. Common applications of extension springs include:
Extension springs use a variety of hook or loop end configurations to fit specific functions. Extension spring ends include threaded inserts, extended twist loops, crossover center loops, hooks, expanded eyes, reduced eyes, rectangular ends and teardrop-shaped ends.
Modify the length of hooks and the spring body distance for customized extension spring fits and functions.
Master Spring manufactures made-to-order extension springs for OEMs. Our custom spring manufacturing capabilities include:
Need a custom wire form or coil spring? We make it work. Fill out the contact form and a representative will respond within 1 business day. Please attach a PDF or CAD file with your request to quote.
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78 Congress Circle West, Roselle, IL 60172
