-20, UNF, Taper, Overall Length 3 3/8 in, High Speed Steel, Bright (Uncoated), Right Hand, Thread Length 1 21/32 in, 75 Percent Thread Drill Size 11.Straight Flute Tap, Thread Size 1/2 In.40 mm, Thread Limit 2B, Class of Fit 2B.
-24, UNF, Overall Length 2 11/16 in, HSS-E, Black Oxide, Thread Length 5/8 in, 75 Percent Thread Drill Size I, Thread Limit H3, Class of Fit 3B, Thread Direction Right Hand, Number of Flutes 3.Spiral Flute Tap, Thread Size 5/16 In.