1/4-28 Size x 0.4600" Thread Length x H4 Limit x 0.2550" Shank DIA, High Vanadium Powdered Metal - 3 FL - Steam Oxide Coated
1/4-28 Size x 0.4600" Thread Length x H4 Limit x 0.2550" Shank DIA, High Vanadium Powdered Metal High Performance - Spiral Flute Semi-Bottoming Tap, 3 Flutes, Steam Oxide Coated