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