Spiral Flute Tap, Thread Size 5/16 In. -24, UNF, Overall Length 2 23/32 in, High Speed Steel, Bright (Uncoated), Thread Length 11/16 in, 75 Percent Thread Drill Size I, Thread Limit H3, Class of Fit 2B, Thread Direction Right Hand, Number of Flutes 3. This item has been restricted from sale in the following state (s): []