Irwin Hanson 8144: 1/2-13 NC Plug Tap - 4 Flute, High Carbon Steel

A 1/2-13 UNC/NC plug tap with four straight flutes, right-hand threading, and high-carbon steel construction. The flutes provide rapid chip removal for hand-threading work. It produces a class 2B thread and is intended for routine maintenance, repair work, and rethreading where high thread accuracy and tolerance are not critical.