Spiral Point Tap, Thread Size 5/16 In. -18, UNC, Overall Length 2 23/32 in, Cobalt, TiN, Right Hand, Thread Length 7/8 in, 75 Percent Thread Drill Size F, Thread Limit H7, Class of Fit 2B-3B, Number of Flutes 3. This item has been restricted from sale in the following state (s): []