Spiral Point Tap, Thread Size #8-32, UNC, Overall Length 2 1/8 in, High Speed Steel, Bright (Uncoated), Right Hand, Thread Length 3/8 in, 75 Percent Thread Drill Size 3.40 mm, Thread Limit H3, Class of Fit 2B, Number of Flutes 2 UN coarse (UNC) taps have fewer threads per inch than UN fine (UNF) taps. Compared to UNF taps, UNC taps perform better in threading applications on brittle materials and are less likely to cross thread. Coarse threads can also withstand more physical abuse than fine threads. The bright finish on these taps provides a smooth, polished surface.
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