Straight Flute Hand Tap , 3/8-16 , Bottoming, Plug, Taper , 4 Flutes,
Three-Piece Hand Tap Set, Tap Thread Size 3/8 In.-16, High Speed Steel, Bright (Uncoated), Thread Standard UNC, Thread Length 1 1/4 in, Overall Length 2 15/16 in, 75 Percent Thread Drill Size 5/16 in, Thread Limit H3, Class of Fit 3B, Thread Direction Right Hand, Number of Flutes 4, Package Quantity 3.