Spiral Point Tap, 5/16-18, Plug, UNC, 3 Flutes, TiCN
Spiral Point Tap, Thread Size 5/16 In.-18, UNC, Overall Length 2 27/32 in, High Speed Steel, TiCN, Right Hand, Thread Length 13/16 in, 75 Percent Thread Drill Size F, Thread Limit H3, Class of Fit H3, Number of Flutes 3.