Irwin BM8129 Fractional Tap, 5/16-24 Thread, Plug Tap Thread, 4-Flute, HCS

Straight flutes are ground to provide rapid chip removal for efficient threading

Ideal for routine maintenance, repair work and for rethreading where high accuracy and tolerance thread is not critical

Taps produce a class 2B thread

Designed for hand threading work in a variety of materials

3 to 5 threads chamfered