7/16 - 20 Size x 1.4375" (1-7/16) Thread Length x H3 Limit x 0.3230" Shank DIA, High Speed Steel - 4 FL - TiN Coated
7/16 - 20 Size x 1.4375" (1-7/16) Thread Length x H3 Limit x 0.3230" Shank DIA, High Speed Steel Hand Tap - Left Hand, 4 Flutes, TiN Coated