- 9/16 In. x 12 National Coarse Thread Fractional Tap
- Ideal for routine maintenance, repair work, and for rethreading where high accuracy and tolerance thread is not critical
- Has straight flutes that 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 31/64 In. drill bit