Irwin 1791138 Fractional Tap, #3/8-16 NC Thread, Bottom Tap Thread, HCS

High-carbon steel self aligning taps, ideal for routine maintenance, repair work and for rethreading where high accuracy and tolerance thread is needed. Used for hand threading work in a variety of materials, produces class 2B thread. Tap size and recommended drill bit size is laser etched on each tool for easy identification.

• Straight flutes are ground to provide rapid chip removal for efficient threading
• Straight flutes are ground to provide rapid chip removal for efficient threading
• Ideal for routine maintenance, repair work and for rethreading
• Taps produce a class 2B thread
• Designed for hand threading work in a variety of materials
• 1 to 2 threads chamfered
• Shortest standard chamfer
• For threading close to the bottom of blind holes