Spiral Point Tap, 1/4-20, Plug, UNC, 3 Flutes, Oxide
Spiral Point Tap, Thread Size 1/4 In.-20, UNC, Overall Length 2 1/2 in, HSS-E, Black Oxide, Right Hand, Thread Length 9/16 in, 75 Percent Thread Drill Size #7, Thread Limit H2, Class of Fit H3, Number of Flutes 3.