is there a way to strip down the Callout? What I mean is in the picture. All I need is "M" as a prefix.
There is no direct way for it.
XML file 'nx502_Threaded_Hole_Standard' contains the thread data. It is located at 'C:\Program Files\Siemens\NX 11.0\UGII\modeling_standards'.
You can edit this XML if you do not want pitch to be shown in the hole callout.
if you have a shared ugii_env_file, you can add this variables :
# Modeling Standards Directory (Holes and Threads)
where Holes&Threads is the folder where are positioned :