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