3/8" NSPM x 1/4" Male NPFT Brass Fitting Connector. This connector is used for converting a ball seat fitting to male pipe threads. 30° Beveled Seat. 150 PSI maximum working pressure. -40° to 160° temperature rating. Not deemed lead free. Not for use with potable water. Please Note: NPT Thread size is NOT determined by its outside thread diameter in inches. Please review our attached NPT sizing chart to cross reference NPT thread size to linear inches