5/16-24 Size x 1.1250" (1-1/8) Thread Length x H3 Limit x 0.3180" Shank DIA, High Speed Steel - 3 FL - Zrn Coated
5/16-24 Size x 1.1250" (1-1/8) Thread Length x H3 Limit x 0.3180" Shank DIA, High Speed Steel Spiral Flute - Semi-Bottoming Tap, 3 Flutes, Zrn Coated