Guhring Thread Forming Tap, Straight Standard, Series: 3998, Measurement System: Imperial, 5/8-11 Thread, UNC Thread Standard, Modified Bottoming Chamfer, 3.811 in Overall Length, 4 Flutes, Right Hand Cutting Direction, Class of Fit: 3B, 0.48 in Shank Diameter, 0.536 to 0.547 in Tap Drill, 0.36 in Square, HSS-E-PM, TiN Coated, H3 Thread Limit