Hex Threading Die, Thread Size 5/16 In. -18, UNC, Solid, Outside Dia. 11/16 in, Die Material Carbon Steel, Finish - Machining Bright, Thread Type UNC, Threads per Inch 18, Thread Direction Right Hand, Die Thickness 5/16 in, Die Shape Hex, Hex Size 0.6188 in. This item has been restricted from sale in the following state (s): []