In a strategic move that underscores a deepening commitment to domestic manufacturing and supply chain resilience, NSI has officially announced the acquisition of Norridge, Illinois-based Cast Products Inc. (CPI). This acquisition marks a significant milestone for NSI, integrating over half a century of zinc die-casting expertise into its already robust portfolio of electrical, industrial, and automotive solutions. By bringing CPI into the fold, NSI is not only expanding its production capacity but is also positioning itself as a dominant force in the highly competitive cable and conduit fittings market.
Main Facts: A Synergy of Expertise and Capacity
The acquisition of Cast Products Inc. is more than a mere expansion of assets; it is a consolidation of specialized technical capability. Founded in 1966, CPI has cultivated a reputation as a high-volume leader in zinc die casting. The company’s focus has historically been on the intersection of advanced machine technology, precise tool fabrication, and efficient secondary processing.
For NSI, this acquisition addresses a critical need in its fastest-growing business segment: the Cable and Conduit Fittings category. As demand for high-quality, American-made electrical components continues to rise, the addition of CPI’s specialized production lines provides an immediate, scalable boost to NSI’s manufacturing bandwidth.
Key facets of the acquisition include:

- Vertical Integration: By owning the manufacturing facility, NSI gains greater control over quality assurance, lead times, and supply chain logistics.
- Technological Advancement: CPI brings proprietary innovative tooling designs and pioneering casting methodologies that will be integrated into NSI’s broader operational framework.
- Market Expansion: While the immediate focus is on the electrical market, CPI’s history of serving the automotive and industrial sectors provides NSI with cross-industry diversification.
A Chronology of Excellence: The Legacy of Cast Products Inc.
To understand the strategic value of this acquisition, one must look at the historical trajectory of Cast Products Inc. over the last 57 years.
- 1966: Cast Products Inc. is founded in Illinois, establishing a mission to deliver high-quality, domestically produced zinc die-cast components.
- 1970s–1990s: The company undergoes a series of technological pivots, moving away from rudimentary casting toward automated, high-precision manufacturing. This period established CPI as a "pioneering force" in the Midwest manufacturing hub.
- 2000s: CPI solidifies its reputation as a preferred partner for electrical distributors and installers, prioritizing competitive pricing without compromising on the rigorous standards required for industrial and automotive applications.
- 2010s: The company continues to refine its secondary processing capabilities, ensuring that every component—from initial design to final finish—is handled under one roof.
- 2023: NSI identifies CPI as a key strategic partner. The acquisition is finalized, marking the beginning of a new chapter where CPI’s legacy is merged with NSI’s extensive distribution and brand reach.
Supporting Data: Why Zinc Die Casting Matters
The significance of this acquisition is best understood through the lens of the material science involved. Zinc die casting is a highly precise process that allows for complex geometries, thin walls, and high dimensional accuracy. In the electrical industry, where safety, reliability, and conductivity are paramount, the quality of a fitting can dictate the longevity of an entire infrastructure installation.
CPI’s production facility in Norridge, Illinois, is equipped to handle the rigorous demands of modern electrical code requirements. Data suggests that as U.S. infrastructure spending increases, the demand for domestically manufactured conduit fittings has surged. By maintaining production in the United States, NSI avoids the volatility of international logistics, ensuring that distributors have consistent access to the parts that installers "love and trust."
The synergy is further evidenced by the alignment with NSI’s existing stable of brands, including Bridgeport and Remke. These brands have long been the "gold standard" in fittings. By adding CPI, NSI creates a comprehensive ecosystem of products that can satisfy a project’s needs from end-to-end, reducing the number of vendors a distributor needs to work with.

Official Perspectives: The Vision for the Future
Leadership at both NSI and the former CPI organization have signaled that this merger is built on a shared philosophy of "American-made excellence."
In official statements, NSI representatives have emphasized that the acquisition is a proactive measure to secure the supply chain. In an era of global economic uncertainty, the ability to engineer, manufacture, and ship products from domestic facilities is a competitive advantage that cannot be overstated.
"The momentum in our Cable and Conduit Fittings category is unprecedented," an NSI spokesperson noted. "By adding CPI’s die-cast production capacity and their decades of technical expertise, we are not just buying a factory; we are acquiring a culture of innovation that aligns perfectly with our vision for the future of American manufacturing."
For the team at CPI, the transition into the NSI family represents a chance to scale their proven methodologies to a national and international stage, supported by NSI’s expansive sales and marketing infrastructure.

Implications: What This Means for the Industry
The acquisition carries significant implications for the electrical market, distributors, and the broader American manufacturing landscape.
For Electrical Distributors
Distributors can expect a more streamlined ordering process and a wider availability of high-demand zinc fittings. With NSI’s established distribution networks, the products previously available through CPI will now reach a wider geographic footprint, potentially lowering shipping costs and reducing lead times for regional projects.
For Professional Installers
Installers, who have long relied on the consistency of brands like Bridgeport and Remke, will see an increased volume of reliable, high-standard fittings. The "Trusted Tradition" of CPI ensures that the parts arriving at the job site are built to withstand the rigors of field installation, reducing the likelihood of failures or recalls.
For the Domestic Manufacturing Sector
This move is a strong indicator of the ongoing "reshoring" trend in American manufacturing. By investing in a 57-year-old U.S.-based company, NSI is signaling that the domestic industrial base remains a viable, high-growth sector. It serves as a case study for how legacy manufacturing companies can remain relevant and highly valuable by embracing technological innovation and aligning with larger, growth-oriented parent corporations.

Looking Ahead: A Unified Portfolio
As the integration process continues, the market will likely see an expanded catalog that leverages the technical capabilities of CPI across the full spectrum of NSI brands. The company has already encouraged its stakeholders to explore the full range of offerings from NSI Brands, Bridgeport Fittings, and Remke Industries.
In conclusion, the acquisition of Cast Products Inc. by NSI is a calculated, strategic, and highly beneficial move for the electrical industry. It bridges the gap between historical manufacturing expertise and modern, high-volume demand. By doubling down on American manufacturing, NSI is securing its place as a leader in the infrastructure sector, ensuring that the critical components holding our electrical systems together are built with the precision, reliability, and ingenuity that define American industry.
As NSI moves forward, the focus will remain on refining these processes, maximizing the utility of the Norridge facility, and continuing the tradition of quality that both companies have spent decades cultivating. For the end-user—the electrician on the job site—this means one thing: the tools they rely on are only getting better.
