Hydraulic appliance has mother part with internally threaded screw-in- hole, externally threaded screw part, and uniform pitches.

摘要

the hydraulic appliance has a mother part (10) with a screw-in hole (19) which possesses an inner thread with a set nominal diameter and a set uniform pitch. A screw part (20) has an outer thread with the nominal diameter of the screw-in hole and with a set uniform pitch and which is screwed into the screw-in hole. A slight difference exists between the pitches of the mother part's inner thread and of the screw part's such as nozzle's outer thread.