Table had to be edited in order to add custom taps.
Solution
The thread table for hole making is found at...
$UGII_DRILL_SIZE_HOLE_STANDARD_DIR\nx502_Threaded_Hole_Standard.xml Hardware/Software Configuration
Platform: all
OS: n/a
OS Version: n/a
Product: NX
Application: CAM
Version: V1899
Function: DRILLING
Ref: 002-8017009