Rox Capital Partners has acquired Interstate Threaded Products, a manufacturer and distributor of specialty threaded fasteners used by industrial customers across North America.
Interstate manufactures and distributes a portfolio of threaded fasteners and custom fastening products used by customers operating in infrastructure, power generation, construction, telecommunications, industrial manufacturing, agriculture, and other mission-critical industries. The Dallas-headquartered company was founded in 1973 and today is led by President Rick Stone who will continue in his role in partnership with Rox Capital.
"Finding the right partner was critical to us," said Mr. Stone. "Rox understands our business, respects the culture we have built, and shares our long-term vision for the company. Their operational experience and growth-oriented approach make them an excellent partner for our employees, customers, and suppliers. We are excited about the opportunities ahead and confident that together we can continue building on Interstate's strong foundation."
[caption id="attachment_237728" align="alignright" width="120"] Mark Sparrow[/caption]
"We are excited to partner with Rick Stone and the entire Interstate Threaded Products team," said Mark Sparrow, a managing partner of Rox Capital. "Interstate has built an outstanding reputation over more than five decades by delivering exceptional products and service to its customers. The company's strong market position, loyal customer relationships, and commitment to operational excellence make it an ideal fit for Rox. We look forward to supporting the team as they continue to invest in growth, expand capabilities, and strengthen their position as a leader in the specialty fastener industry."
The acquisition establishes Rox's industrial fastener platform, which the firm intends to expand through a combination of organic investment and add-on acquisitions. Rox's founders have prior experience in the fastener industry. The firm's first portfolio company, Amifast, is an Austin-based fastener and hardware distributor that Mr. Sparrow and Al Cameron acquired in 2017 when launching the firm. Amifast was sold in December 2021 to strategic buyer Afinitas, a portfolio company of BW Forsyth Partners.
The North American industrial fasteners market was valued at $22 billion in 2026 and is projected to reach $27 billion by 2031, a compound annual growth rate (CAGR) of 4%, according to Mordor Intelligence. Externally threaded fasteners—the core product category for specialty manufacturers like Interstate—account for more than 52% of North American fastener revenue by product type. Demand across Interstate's end markets is structurally supported by infrastructure investment, domestic manufacturing reshoring, and the power generation buildout accompanying U.S. electrification and data center expansion.
Rox Capital Partners is a private equity firm established in 2017 by Al Cameron and Mark Sparrow. The firm focuses on lower middle-market businesses with $1 million to $4 million of EBITDA in the distribution, manufacturing, industrial, and healthcare sectors and specializes in partnering with seasoned management teams and founders. Rox, with offices in Austin and Dallas, operates as an independent sponsor, partnering closely with management to build and scale these businesses.
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