Irrigation sprinkler with captive nozzle retention screw

An irrigation sprinkler, comprising:

• a riser;
• a nozzle turret mounted for rotation at an upper end of the riser;
• and
• the nozzle turret having a socket, a nozzle removably mounted in the socket, a sleeve that communicates with the socket, and screw means for screwing into the sleeve to retain the nozzle in the socket and unscrewing from the sleeve to allow removal of the nozzle despite stripping of a female threaded portion of the sleeve,
• wherein the screw means is a nozzle retention screw having a shank with a lower threaded segment and an upper unthreaded segment,
• and wherein the screw has a head that abuts an upper end of the sleeve when the screw is fully screwed in a downward direction into the sleeve.

An irrigation sprinkler, comprising:

• a riser;
• a nozzle turret mounted for rotation at an upper end of the riser;
• and
• the nozzle turret including a body having a rotational axis and a nozzle socket extending transverse to the rotational axis, a nozzle removably received in the socket, a sleeve opening on a top side of the body and defining a bore that communicates with the socket, and a nozzle retention screw with a shank having a lower male threaded segment screwed into the bore of the sleeve from the top side of the body, the shank extending into the socket a sufficient depth to retain the nozzle in the socket, the screw having a head that abuts an upper end of the sleeve when the screw is fully screwed downwardly in the sleeve by rotating the screw in a first direction, the screw shank having an upper unthreaded segment with a predetermined longitudinal dimension selected relative to a longitudinal dimension of the bore whereby the screw can continue to be rotated in the first direction after the head of the screw abuts the upper end of the sleeve and a remaining interference fit between the screw and the sleeve allowing the screw to thereafter be rotated in an opposite direction to move the screw upwardly in the sleeve.