Titan USA Taper Pipe Tap, Straight Flute, Series: 785, Measurement System: Imperial, 1/4-18 Thread, Interrupted/NPT Thread Standard, Plug Chamfer, 1-1/16 in Thread Length, 2-7/16 in Overall Length, 5 Flutes, Right Hand Cutting Direction, 9/16 in Shank Diameter, 0.421 in Square, HSS, Uncoated