This procurement is for NSN 7R-1680-016816432-E7, quantity 6 each, with delivery FOB origin. The item is flight critical and requires Government source approval prior to award; only previously approved sources have been solicited. If you are not an approved source, you must submit all required source approval information detailed in the NAVSUP WSS Source Approval Brochure with your proposal, or your offer will not be considered. The Government intends to solicit and negotiate with only one source under FAR 6.302-1, but all responsible sources may identify interest and capability. This is not a request for competitive proposals, and award will only be made to an offeror that meets qualification requirements at the time of award.