Best Seller | GREENFIELD THREADING 330269 Straight Flute Hand Tap, Semi-Bottoming 4 Flutes Straight Flute Tap, Thread Size 1/2 In.-13, UNC, Semi-Bottoming, Overall Length 3 3/8 in, Cobalt, Black Oxide, Right Hand, Thread Length 15/16 in, 75 Percent Thread Drill Size 27/64 in, Thread Limit H3, Class of Fit 2B ... more GREENFIELD THREADING 330269 Straight Flute Hand Tap, Semi-Bottoming 4 Flutes Straight Flute Tap, Thread Size 1/2 In.-13, UNC, Semi-Bottoming, Overall Length 3 3/8 in, Cobalt, Black Oxide, Right Hand, Thread Length 15/16 in, 75 Percent Thread Drill Size 27/64 in, Thread Limit H3, Class of Fit 2B | | $24.35 go to store |