This is a sole-source procurement for a specific NSN part (quantity 3) that requires Government source approval due to flight-criticality and limited technical data. Only previously approved sources are solicited; new sources must submit detailed qualification information, but approval cannot delay award. The Government intends to negotiate with only one source under FAR 6.302-1, though interested parties may express capability. Qualification requirements must be met at time of award, and the item is subject to trade agreements. No budget, delivery location, or submission deadlines are specified.