Straight Flute Tap, Thread Size 5/16 In. -24, UNF, Bottoming, Overall Length 2.72 in, Vanadium High Speed Steel, Nitride, Right Hand, Thread Length 0.66 in, 75 Percent Thread Drill Size I, Thread Limit H3, Class of Fit 2B-3B. This item has been restricted from sale in the following state (s): []