Spiral Point Tap, Thread Size #10-32, UNF, Overall Length 2 13/32 in, High Speed Steel, CrC/C, Right Hand, Thread Length 1/2 in, 75 Percent Thread Drill Size #21, Thread Limit H6, Class of Fit H3, Number of Flutes 3.
-28, UNF, Overall Length 2 15/32 in, High Speed Steel, CrC/C, Right Hand, Thread Length 9/16 in, 75 Percent Thread Drill Size 5.45 mm, Thread Limit H5, Class of Fit 6H, Number of Flutes 3.Spiral Point Tap, Thread Size 1/4 In.