The requirement is for NSN 7R-1680-015817867-E7, reference 136K300G02, quantity 76 each, delivery FOB origin, for a flight-critical part requiring Government source approval. Only previously approved sources have been solicited; approved source(s) retain essential design, manufacturing/repair, and technical data not economically available to the Government. A prospective bidder that is not an approved source must submit the source-approval information required by the applicable NAVSUP WSS Spares or Repair Source Approval Information Brochure with its offer, including technical data based on its production experience or lack thereof. Offers lacking all required source-approval data, or documentation of prior submission, will not be considered; if approval cannot be completed in time, award may proceed based on Fleet support needs. The Government intends to solicit and negotiate with only one source under FAR 6.302-1, is not using FAR Part 12 commercial-item procedures, and drawings are not available.