Naval Supply Systems Command Weapon Systems Support (NAVSUP WSS) - Mechanicsburg solicits and will award a base five-year Indefinite-Delivery Indefinite-Quantity (IDIQ) contract for the repair of NSN: 7HH 5960-01-307-6691, Electron Tube, Switch Tube, Single Duty and NSN: 7HH 5960-01-392-6982, Electron Tube, Switch Tube, Double Duty.