Union Butterfield® Straight Flute Hand Tap, General Purpose, Series: 1500, Measurement System: Imperial, UNC Thread Standard, 3/8-16 Thread, Tapered Chamfer, 4 Flutes, HSS, Bright, Class of Fit: 2B/3B, Right Hand Cutting Direction, 1-1/4 in Thread Length, 2-15/16 in Overall Length, 0.381 in Shank Diameter, Steel, Stainless Steel, Copper, Titanium, Nickel, Cast Iron, Aluminum Magnesium and Synthetic Materials Material Application, H2 Thread Limit