In a spray nozzle (10), a carrier (12) defines a spray aperture (20), a groove (30) surrounding the spray aperture (20) for receiving an o-ring (32), a first locating bore (26) for slidably receiving an orifice plate (14) seated against the o-ring (32) and for aligning the orifice plate (14) with the spray aperture (20), and a second locating bore (28) for slidably receiving a swirl unit (16) and aligning the swirl unit (16) with the orifice plate (14) and spray aperture (20). A pair of retaining lugs (34) retain the swirl unit (16) and orifice plate (14) within the carrier. An elongated slot (68) is formed on the upstream end of the swirl unit (16) for receiving a screw driver during assembly.
