1/4-18 Size x 1.0625" (1-1/16) Thread Length x 0.5625" (9/16) Shank DIA, Carbide - 4 FL - Nitride & Steam Oxide
1/4-18 Size x 1.0625" (1-1/16) Thread Length x 0.5625" (9/16) Shank DIA, Carbide Taper Pipe Tap - NPT Cast Iron, 4 Flutes, Nitride & Steam Oxide