This requirement is for 88 units of NSN 7R-1660-010874375-H1, a commercial/nondevelopmental item, with delivery FOB origin. The item is flight critical and requires Government source approval prior to award, with only previously approved sources solicited; new sources must submit technical data per the NAVSUP WSS Source Approval brochures. Award will only be made to offerors or manufacturers meeting qualification requirements, and the Government intends to negotiate with only one source under FAR 6.302-1. This notice is not a request for competitive proposals, but all responsible sources may express interest and capability. The Government is not using FAR Part 12 commercial acquisition policies for this solicitation.