Fractional Plug Tap, National Special Thread, 3/16-In. x 24

3/16" x 24, national special thread, fractional plug tap, carbon steel, ideal for routine maintenance, repair work & for rethreading where high accuracy & 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 taps produce a class 2b thread, use drill bit 5/32".