Our Legacy: The Foundation of AMFT
Associated Spring is the origin and cornerstone of AMFT, with a legacy of engineering excellence that spans over 165 years. Since its founding in 1857, Associated Spring has led the way in designing and manufacturing precision springs, stampings, and engineered metal components, becoming a trusted partner for industries ranging from aerospace and defense, automotive and medical devices to industrial systems, and consumer products.
With global engineering and manufacturing capabilities, Associated Spring laid the groundwork for the values AMFT stands by today:
- Precision at scale, delivering mission-critical parts components with zero-defect standards;
- Innovation leadership, driving advancements in spring, stamping and assembly technologies;
- Collaborative customer partnership, co-developing solutions with world-class OEMs and Tier-1 suppliers.
Associated Spring’s heritage is more than history—it’s the foundation of AMFT’s identity. We combine legacy expertise, global reach, and a culture of innovation to engineer precision for the next generation of progress.
As an industry leader, Associated Spring sets the standard for the industry, through its Engineering Guide to Spring Design.
QM Certificates
Associated Spring Milwaukee, WI
ISO 13485:2016
Certificate No. 19790
AS9100D/ISO9001:2015
Certificate No. 19705
Download Associated Spring’s 2025 Engineering Guide to Spring Design!
Get the latest version of this critical reference tool for specifying the right engineered components in your application.
About the Preeminent Guide to Spring Design
Originally published in 1937, the Engineering Guide to Spring Design is considered a trusted resource amongst the engineering and design community. Associated Spring is proud to provide this updated and revised version to our customers and partners.
What’s Inside
Solve any spring design problem with the level of detail provided in this guide—even if you don’t have access to a software program. All the numbers and formulas you need are here, plus details on spring configurations and materials.