Union Butterfield Straight Flute Hand Tap, General Purpose, Series: 1505, Measurement System: Imperial, UNS Thread Standard, 2-8 Thread, Tapered Chamfer, 6 Flutes, HSS, Bright, Class of Fit: 2B, Right Hand Cutting Direction, 3-9/16 in Thread Length, 7-5/8 in Overall Length, 1.644 in Shank Diameter, Steel, Stainless Steel, Copper, Titanium, Nickel, Cast Iron, Aluminum Magnesium and Synthetic Materials Material Application, H6 Thread Limit