Irwin 8123 Hanson Fractional Plug Tap 1/4 -28NF High Carbon Steel

Size: 1/4 -28NF; Material: High carbon steel; Number of Flutes: 4; Ideal for routine maintenance repair work and for rethreading where high accuracy and tolerance thread is not critical; Straight flutes are ground to provide rapid chip removal for efficient threading; Designed for hand threading work in a variety of materials; Tape produce a class 2B thread;