A wellhead assembly has a tubular wellhead body (11) with a wellhead axial bore (13) and a wellhead radial bore (27). A hanger (41) has a hanger axial bore (45) and a hanger radial port (47). A tube moving mechanism (35) moves a tube (29) in the wellhead radial bore between a retracted position, an intermediate position and an extended position. The tube has an inner end (39) that is recessed in the wellhead radial bore while in the retracted position, that protrudes a first distance into the wellhead axial bore while in the intermediate position, and which protrudes a second distance into engagement with the hanger radial port while in the extended position. A landing shoulder (65) on the hanger lands on an inner portion of the tube while the tube is in the intermediate position.