This opportunity is for the acquisition of a specific part (NSN 7R-1615-016987081-H5) that requires Government source approval due to its flight-critical nature and limited technical data. Only previously approved sources are solicited, and new sources must submit detailed qualification information as outlined in the NAVSUP WSS Source Approval Brochure. Delivery is FOB origin, and the Government intends to negotiate with only one source under FAR 6.302-1. Proposals from non-approved sources will not be considered unless all required source approval data is provided. The Government will consider all proposals received within 45 days of this notice, but award may proceed based on fleet support needs if source approval cannot be processed in time.