Union Butterfield Straight Flute Hand Tap, General Purpose, Series: 1700M, Measurement System: Metric, Coarse Thread Standard, M30x3.5 Thread, Plug Chamfer, 4 Flutes, HSS, Bright, Class of Fit: 6H, Right Hand Cutting Direction, 2-9/16 in Thread Length, 5-7/16 in Overall Length, 1.021 in Shank Diameter, Steel, Stainless Steel, Copper, Titanium, Nickel, Cast Iron, Aluminum Magnesium and Synthetic Materials Material Application, D9 Thread Limit