The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the procurement of two units of a flight-critical component identified by NSN 7R-1615-012306218-VH and reference number 70351-08001-046. Due to the specialized nature of this item, which is essential for helicopter rotor blades and drive mechanisms, only sources previously approved by the Government will be considered for this contract, as the necessary technical data for competitive solicitation is not available. Interested vendors must submit a proposal along with the required documentation for source approval, as outlined in the NAVSUP WSS Source Approval Information Brochure, to ensure compliance with the stringent qualification procedures. For inquiries, potential bidders can contact Dana L. Scott at (215) 697-0273 or via email at dana.l.scott14.civ@us.navy.mil.