The Government intends to solicit and negotiate a sole-source contract for a transformer assembly (NSN 7H-5950-014382603-GL), quantity 4, delivered to DLA Distribution, New Cumberland, PA. The Government does not own the data or rights needed for additional-source purchase or repair, and it has determined that buying the data or reverse engineering the part is uneconomical. This notice is not a request for competitive proposals, but responsible sources may identify their interest and capability or submit proposals, quotations, or capability statements for consideration in determining whether to compete the requirement. Standardized military/federal documents are available through DODSSP/ASSIST, though patterns, drawings, deviation lists, and purchase descriptions are not stocked at DODSSP. The Government is not using FAR Part 12 commercial-item policies, but interested parties may identify commercial-item interest and capability to the contracting officer.