Abstract: Disclosed is a new method for making a component having interior and exterior threads. Such method includes the steps of providing a thread-forming apparatus having first and second circumferential threaded portions defining a space between them. Such space is filled with a flowable material, e.g., hot plastic, which is permitted to solidify and form the component. The apparatus and the component are then separated from one another by rotating such apparatus so that both threaded portions unscrew from the component. The finished component has interior and exterior threads which are simultaneously formed and substantially free of flashing. The new thread-forming apparatus has a first threaded portion and a pocket. A plug is in the pocket and has a second threaded portion spaced from the first threaded portion.

Abstract: An eyeball assembly for use in an eyeball fitting. The eyeball assembly includes a passage for allowing water flow therethrough, and the passage is adapted to accept an insert for adjusting the discharge orifice of the eyeball or governing the direction of discharge therefrom. Various inserts are adapted for placement within the eyeball passage. The eyeball passage is configured so as to provide an area of minimum transverse dimension, and the inserts are configured so as to provide an end which has a transverse dimension slightly greater than the minimum eyeball passage dimension. The inserts are adapted to be engaged within the eyeball passage by means of a push-on force substantially parallel to the longitudinal axis of the eyeball passage, causing the inserts to "snap" within the eyeball passage to provide a secure engagement therebetween. The inserts are difficult to remove by manual force, but, with the aid of a tool, can be removed from the eyeball for replacement or interchangeability.