This opportunity is for the procurement of a flight-critical item (NSN 7R-1680-016926171-H5) that requires Government source approval prior to award, and only previously approved sources have been solicited. Delivery is FOB Origin, and the Government intends to solicit and negotiate with only one source under FAR 6.302-1, though all responsible sources may submit proposals. If you are not an approved source, you must submit a complete source approval request with your proposal, as the approval process typically cannot be delayed for award. Proposals from unapproved sources that fail to provide all required data from the NAVSUP WSS Source Approval Brochure will not be considered for award. No budget amount or performance location is specified in the description.