Dormer, 8450647, Thread Forming Tap, High Performance, Series: E894, #4-40 Thread, UNC Thread Standard, Semi-Bottoming Chamfer, 0.354 in Thread Length, 2.205 in Overall Length, 3 Flutes, Right Hand Cutting Direction, Class of Fit: 2BX, 0.141 in Shank Diameter, 0.0890 Tap Drill, 0.110 in Square, HSS-E, TiN