| A Legacy of Precision, Innovation & Partnership Since 1939
CSS is a family-owned global manufacturer of precision springs, stampings, and assemblies—trusted by OEMs for over 86 years to deliver high-performance components for critical applications
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CSS (Connecticut Spring & Stamping) is a globally recognized precision manufacturer with over 86 years of experience supplying tight-tolerance springs, progressive stampings, fineblanked components, machined parts, and custom assemblies. Family-owned and operated since 1939, we proudly serve OEMs across the medical, aerospace, defense and firearms, electronics, and government sectors.
An end-to-end, single source manufacturing partner, we support clients from early-stage prototyping through to full-scale production and final assembly. Our specialty lies in developing innovative, high-precision components—especially those considered complex or difficult to manufacture. Global OEMs choose CSS because they know we consistently deliver critical parts to exact specifications, on time and at scale.
We strive to be more than a supplier. We aim to be a true extension of your team. Our long-standing client relationships, backed by performance awards and measurable results, reflect our commitment to responsiveness, collaboration, and trust.
From early product development to urgent production shifts, we deliver expert guidance and attentive service. Our consultative approach is built on listening, problem-solving, and understanding your operational goals so we can help you succeed, project after project.
Lean manufacturing is embedded in our culture and operations. Since the 1990s, CSS has applied lean principles to improve workflows, reduce waste, and lower costs for our clients without compromising quality or speed.
We believe improvement starts with measurement. Our structured lean program and disciplined management approach have driven gains in productivity, quality, and delivery—culminating in a 96% on-time delivery rate, one of the highest in the industry.
This mindset also drives our investment in people, technology, and training. Our teams are agile, cross-functional, and empowered to collaborate, innovate, and perform at the highest level.
That same commitment to operational excellence extends to our quality systems. CSS delivers certified quality and compliance with ISO 13485:2016, AS9100D, ISO 9001:2015, DDTC registration, and a Federal Firearms License—ensuring precision and reliability across every part we produce.
For over eight decades, CSS has blended the values of a family business with the scale and sophistication of a global supplier. We serve clients across the world with the same integrity, pride, and attention to detail that have defined our brand since 1939.
Our people are at the heart of that success. We prioritize hands-on training, cross-departmental collaboration, and continuous improvement—equipping us to deliver better outcomes for our clients. While we honor our legacy, we never stop evolving. From adopting new technologies to meeting rising industry expectations, CSS is built to lead with innovation and agility.
