5/8"x11 NC Tap

Irwin Tools 5/8" x 11 National Course Thread Fractional Tap is ideal for routine maintenance, repair work and for rethreading where high accuracy and tolerance thread is not critical. It has straight flutes that are ground to provide rapidchip removal for efficient threading. It is designed for hand threading work in a variety of materials. Taps produce a Class 2B thread. Use 17/32" drill bit.