The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the procurement of five units of landing gear axles, identified by NSN 7R-1620-012706789-GF. The procurement requires engineering source approval due to the flight-critical nature of the item, necessitating that only approved sources may submit proposals, with strict adherence to qualification procedures set by the Government engineering activity. Interested parties must provide comprehensive documentation as outlined in the NAVSUP Source Approval Information Brochures, and proposals must be submitted within 45 days of the notice publication, with contact for inquiries directed to Kelly A. Gipson at (215) 697-4787 or via email at KELLY.A.GIPSON1@NAVY.MIL.