OEM replacement set screw for Hunter PGP series rotors (part 120300). This small but critical component secures the nozzle/jet breaker in place and is used across multiple Hunter rotor models. Keep a few spares on hand for maintenance and quick repairs. Compatibility: Fits Hunter PGP, PGH and I-20 series rotor sprinklers as the nozzle/set screw. Function: Secures the nozzle or jet breaker to the rotor head so the nozzle stays properly seated during operation. Installation: Install with a small screwdriver or use Hunter nozzle tools (nozzle insertion collar or adjusting key). Tighten only until seated. Caution: Do not turn clockwise more than five full turns — over-tightening can cause loss of radius adjustment or damage. Packaging: Sold individually; ideal spare part for irrigation technicians and homeowners. Simple to replace and inexpensive, part 120300 restores proper nozzle retention and helps maintain uniform coverage. Compatible with common Hunter rotor nozzle charts and maintenance kits; consult your rotor manual for specific service instructions.
