Quality Spring Manufacturing Since 1850

John Evans’ Sons LLC is a quality spring manufacturer in Lansdale, Pennsylvania, producing custom precision springs, metal stampings, and mechanical assemblies for the medical device, aerospace, and defense industries since 1850. As America’s First Springmaker, we set the standard for precision, performance, and reliability across every component we build. We ensure that mission-critical applications function flawlessly and set the standard for world-class precision spring products. At John Evans’ Sons LLC, we don’t just manufacture springs—we engineer solutions.

Built on Quality & Trust

Since 1850, QUALITY has been embedded in every step of our processes.

Kaman Aerospace, a supplier to the global aerospace industry, presented us multiple awards for outstanding quality and on-time delivery by a component vendor to a major defense contractor.

Over the past two decades, our commitment to excellence has garnered numerous quality performance awards from major corporations, including I.B.M., Siemens Energy, Burle Industries, General Electric, Day & Zimmermann, and Branson Ultrasonics.

Our customer logos for I.B.M., Siemens Energy, Burle Industries, General Electric, Day & Zimmermann, Branson Ultrasonics.

A Legacy of Innovation

Headquartered in Lansdale, Pennsylvania, our team specializes in manufacturing custom precision springs, metal stampings, and mechanical assemblies. Whether enhancing medical devices or reinforcing aerospace technology, we partner with our clients to drive innovation, optimize performance, and exceed expectations.

Custom Spring Manufacturing Capabilities

Custom-Engineered Solutions. Proven Performance. We don’t just manufacture springs, we engineer precision motion solutions. From early-stage prototypes to micro-scale components and fully integrated mechanical assemblies, our capabilities support the complete lifecycle of your product. Whether you’re solving for tight tolerances, extreme environments, or demanding performance specs, our team brings decades of experience and advanced manufacturing technologies to your challenge. We collaborate closely with engineers, OEMs, and purchasing teams to deliver custom and standard solutions with unmatched quality and reliability.

Three motor brush springs, one in tweezers to show how small the springs are.

Micro Springs

Mechanical Assembly Springs. Three different drum assembly designs on laminated constant force springs.

Custom Mechanical Spring Assemblies

Robot hand creating electricity with human hand on dark background 3D rendering.

Spring Prototype Capabilities

A Global Powerhouse

John Evans’ Sons is proud to operate as part of Beijer Components, a global network of specialized industrial component manufacturers united by a commitment to precision, quality, and engineering excellence. Lesjöfors, a cornerstone commercial brand within Beijer Components, connects our work to a worldwide standard of spring manufacturing expertise. Beijer Components is a subsidiary of Beijer Alma AB, an internationally listed industrial group headquartered in Sweden and traded on the NASDAQ Stockholm Large Cap list. With nearly 70 companies under its umbrella, Beijer Alma focuses on industrial components, technical solutions, and niche manufacturing, giving John Evans’ Sons the global resources to back 175 years of American craftsmanship.

Certified Quality Management

We are dedicated to fully understanding and exceeding customer expectations through teamwork and the ongoing pursuit of technical and manufacturing excellence. We are committed to:

Satisfying the requirements of,
Maintaining the effectiveness of, and
Continually improving

Our quality management system is based on the principles of ISO 9001:2015, AS9100, and ISO 13485:2016.

Ready to Engineer the Future?

Whether you need custom spring solutions or a reliable manufacturing partner, John Evans’ Sons LLC is here to help. Let’s build the future—one precision component at a time.

Want to know more about John Evans' Sons?

What does John Evans' Sons manufacture?

John Evans’ Sons manufactures custom precision springs, metal stampings, and mechanical assemblies at its facility in Lansdale, Pennsylvania. Core product lines include constant force springs, spiral torsion springs, and power springs, supported by full prototyping capabilities and custom mechanical spring assemblies for OEM applications.

What industries does John Evans' Sons serve?

John Evans’ Sons supplies precision springs to the medical device, aerospace, and defense industries, along with robotics, point of purchase merchandising, electric motors, and other demanding applications. Explore the full range on our industries page.

What quality certifications does John Evans' Sons hold?

John Evans’ Sons is certified to ISO 9001:2015 and AS9100D, supporting quality spring manufacturing for aerospace and defense programs. Our quality management system also supports medical device manufacturing requirements under ISO 13485:2016. Visit our certifications page for current documentation.

Where is John Evans' Sons located?

John Evans’ Sons is headquartered at 1 Spring Avenue in Lansdale, Pennsylvania, where all manufacturing takes place. Made in the USA since 1850, our Lansdale facility handles everything from early-stage prototypes to full production runs. Contact us to discuss your application.

Is John Evans' Sons part of Lesjöfors?

Yes. John Evans’ Sons is part of the Lesjöfors network within Beijer Components, a global group of specialized industrial component manufacturers. This connects 175 years of American spring manufacturing to worldwide engineering resources while keeping production in Lansdale, Pennsylvania.

Does John Evans' Sons make custom springs?

Yes. Custom spring manufacturing is the core of what we do. Our engineers collaborate with OEM design teams from prototype through production, solving for tight tolerances, extreme environments, and demanding performance specifications. Start with a request for quote to scope your project.

Why is John Evans' Sons called America's First Springmaker?

John Evans’ Sons has been manufacturing springs since 1850, earning its place as America’s First Springmaker. Read the full story on our history page.