7/16-20 Size x 0.6200" Thread Length x H3 Limit x 0.3230" Shank DIA, High Vanadium Powdered Metal - 3 FL - Steam Oxide Coated
7/16-20 Size x 0.6200" Thread Length x H3 Limit x 0.3230" Shank DIA, High Vanadium Powdered Metal High Performance - Spiral Flute Semi-Bottoming Tap, 3 Flutes, Steam Oxide Coated