12-28 Size x 0.9375" (15/16) Thread Length x H3 Limit x 0.2200" Shank DIA, High Speed Steel - 3 FL - Zrn Coated
12-28 Size x 0.9375" (15/16) Thread Length x H3 Limit x 0.2200" Shank DIA, High Speed Steel Spiral Flute - Semi-Bottoming Tap, 3 Flutes, Zrn Coated