Published 2026-10-20 · Cyclone Bolt

An affiliate of Stack Infrastructure has filed with the Texas Department of Licensing and Regulation for DFW02B, a second data center building at the company's campus in Lancaster, south of Dallas, Data Center Dynamics reported on October 19, 2026. The application was filed in October 2026, according to Data Center Dynamics (DCD). DCD put the project at $540 million, with construction running from March 2027 to December 2028. Construction Review reported the same figures on October 19, 2026.

What the Lancaster filing says

The figures DCD reported from the filing:

  • A site at 1130 E. Belt Line Road in Lancaster, Dallas County.
  • A two-story building of 350,045 square feet, described as a data center and office.
  • An estimated cost of $540 million.
  • Construction from March 2027 until December 2028.
  • An applicant named SI DFW02CAMPUS LLC, which DCD described as an affiliate that shares an address with Stack.

Construction Review reported the same building size, cost, schedule and applicant, and listed long-lead infrastructure components among the project's challenges.

One building in a 500-megawatt plan

Stack first announced plans for a Lancaster campus in April 2024, DCD reported. A Stack sales brochure describes the DFW02 project as a 500-megawatt campus in South Dallas on 193 acres, according to DCD. The site could total five buildings and 1.76 million square feet with an on-site substation, and DFW02B would offer 54 megawatts, DCD reported from the brochure.

The first building is already in progress. Stack filed for DFW02A, at 1000 E. Beltline Road, in January 2025, DCD reported. That building is a two-story, 360,030-square-foot structure set to be completed in March 2027, with follow-up works due to be completed in March 2028, according to DCD. The timing means the first building is scheduled to finish in the same month the second is scheduled to start.

Lancaster is a busy place for this kind of construction. DCD noted that QTS and Skybox also have projects in Lancaster, and that Stack's DFW1 campus in Plano could total 80 megawatts across three buildings.

A second North Texas filing in the same report

DCD's report also covered a filing by PowerHouse, through Circle T Owner LP, for the DAL130 data center at the Circle T Ranch campus at 13572 N. Main Street in Westlake, Tarrant County. DCD reported that the 224,150-square-foot building is due to start construction in December 2026 for a June 2027 completion, with about $83 million to be invested. Up to four buildings totaling 300 megawatts are reportedly planned at the site, according to DCD, and PowerHouse told the Dallas Morning News that the project remains in the planning and review process.

What two buildings on one schedule mean for bolting

A 350,045-square-foot, two-story data center with an on-site substation is a long list of threaded products, and the Lancaster filing adds a second list before the first is finished. The categories of industrial construction hardware such a project typically involves:

  • Foundations and structure: anchor bolts and anchor rods set in concrete, and structural bolting for the frame, mezzanines and equipment platforms.
  • Mechanical: bolting for chillers, pumps and flanged piping, and threaded rod and hardware for pipe supports. Flanged connections in this kind of service are commonly made up with stud bolts and heavy hex nuts, to the grades the piping specification names.
  • Electrical and substation: anchorage for switchgear, transformers and generators, and hardware for bus, cable tray and conduit supports. A substation scope looks more like power generation work than building work, with equipment foundations and structural steel of its own.
  • Fire protection: hangers, threaded rod and bracing hardware for sprinkler piping.

The schedule matters as much as the scope. On a March 2027 start, anchor bolts are typically among the first materials needed, because they are set before foundation concrete is placed. With DFW02A due to finish in the same month, a buyer may be closing out one building's shorts, the small quantities of missing sizes that can hold up turnover, while opening the next building's take-off.

A multi-building campus also rewards consistency. When the same owner and design team build the same type of structure several times, the bolting take-off tends to repeat, and buyers often carry the same grades, coatings and documentation requirements from one building to the next. The grades, dimensions, coatings and paperwork for each item come from the project specifications and the engineer of record, not from the supplier. Buyers on projects of this size commonly ask for material test reports and lot traceability with each shipment.

Where Cyclone Bolt fits

Cyclone Bolt is a Houston, Texas manufacturer of fasteners, threaded products and custom machined components, established in 2016. Cyclone is supplying several large data center builds in Texas and welcomes more, from full-build take-offs to the shorts at the end of a project. Product families include stud bolts, heavy hex nuts, hex bolts and cap screws, double-end and tap-end studs, washers and gaskets, and custom machined components. Cyclone's published certifications include AS9100D, AS9120B, ISO 9001:2015, API Spec Q1, API 20E and API 20F.

This article reports on public filings and news coverage. It does not describe Cyclone's own work, and nothing here indicates any Cyclone involvement in the projects covered. To discuss a data center bolting package, request a quote with your take-off, specifications and delivery dates.

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