WIDIA 19656 Pipe Tap, 3/8"-18, Plug, 5 Flutes, Metric Fine
Pipe and Conduit Thread Tap, Thread Size 3/8 In.-18, NPT, Overall Length 2 9/16 in, High Speed Steel, Black Oxide, Right Hand, Thread Length 1 13/16 in, 75 Percent Thread Drill Size 9/16 in, Number of Flutes 5