This is a restricted procurement for 5 units of an NSN item, with delivery FOB origin. The technical data needed for competitive acquisition is unavailable or uneconomical to obtain, so only sources previously approved by the Government will be considered. New sources must submit all required data per the NAVSUP WSS Source Approval Information Brochure; offers lacking this documentation will not be considered. Because approval of a new source cannot be delayed for award, an award may proceed based on Fleet support needs even if a source approval request is pending.