The Government seeks 53 each of a specific flight-critical part (NSN 7R-2925-015452717-QE, reference FV29580G5) with delivery FOB origin, and early/incremental deliveries are accepted. The item must be acquired from an approved source because the approved source(s) retain essential design, manufacturing/repair, or technical data not economically available to the Government. Only previously approved sources have been solicited; non-approved sources must submit NAVSUP WSS source approval documentation with their proposal, and award may proceed based on Fleet support needs if source approval cannot be completed in time. This is a proposed sole-source contract action under FAR 6.302-1, but responsible sources may identify their interest and capability or submit proposals, quotations, or capability statements. The Government will not use FAR Part 12 commercial-item procedures, though interested parties may identify commercial-item interest and capability to the contracting officer.