This requirement is for NSN 7R-1560-012168100-EK, reference 123CS10008-602, quantity 1 EA, delivery FOB origin. The part is flight critical and requires Government engineering source approval before contract award; only previously approved sources have been solicited, and the Government intends to negotiate with only one source under FAR 6.302-1. New sources must qualify under the design control activity’s procedures and submit NAVSUP WSS Source Approval Information Brochure data with their offer; offers lacking required data or prior complete submission will not be considered. Responsible sources may identify interest and capability or submit proposals, and interested parties may also identify commercial-item capability to the contracting officer, though FAR Part 12 commercial-item policies are not being used. Drawings are not available.