MORSE Spiral Point Tap, High Performance, Series: GT100 670, Measurement System: Imperial, UNC, 5/16-18, Plug Chamfer, 3 Flutes, HSS-PM, TiCN Coated, Right Hand Cutting, 11/16 in Thread Length, 2-23/32 in Overall Length, Steels, Steel Alloy, Stainless Steels, Titanium Alloy, Nickel, Nickel Base Alloy, Other Exotic Alloy and Materials up to 34Rc Hardness Material Application, H3 Thread Limit