Who We Are

Quality Spring Manufacturing

John Evans' Sons employees gathered around the conference table in their Eagles gear.As America’s First Springmaker, we’ve spent over 175 years redefining quality spring manufacturing through precision, performance, and reliability. Our expertise spans a diverse range of industries, from medical device and aerospace/defense to robotics and point of purchase. 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.

Our Spring 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 – The Lesjöfors Group

John Evans’ Sons LLC is part of the Lesjöfors Group, a global leader in technical spring solutions, formed/stamped parts, gas springs, and metal conveyor belts. With a legacy dating back to 1675, Lesjöfors operates in over 50 manufacturing and sales companies, providing cutting-edge engineering and unparalleled customer support. As a subsidiary of Beijer Alma, listed on the Stockholm Stock Exchange, we are backed by a global network dedicated to pushing the boundaries of spring technology.

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Commitment to Excellence

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.