Spiral Flute Tap, 9/16-18, Bottoming, 4 Flutes, UNF
Screw Thread Insert STI Tap, Thread Size 9/16 In.-18, UNF, Overall Length 3 13/16 in, High Speed Steel, TiCN, Right Hand, Thread Length 53/64 in, Tap Chamfer Bottoming, Thread Limit H4, Number of Flutes 4.