This document establishes the requirements for aircraft, hydraulic couplings, self sealing one side only, for use in Type II hydraulic systems (-65mD to +275 mDF temperature range) as defined by MIL-H-5440. The purpose being to connect a hose or tube to a standard MS33656, MS33514 or MIL-F-85421 fitting and provide the self sealing feature on the hose or tube side of the connection.