Hex Threading Die, Thread Size 9/16 In.-18, NF, Solid, Outside Dia. 1 7/16 in, Die Material High Carbon Steel, Finish – Machining Black Oxide, Thread Type NF, Thread Pitch Not Applicable, Threads per Inch 18, Thread Direction Right Hand, Die Thickness 1/2 in, Die Shape Hex, Hex Size 1-7/16 in