Irwin 1791137 Fractional Tap, 1/4 in- 20 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.

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