Drwaing notes reference Emhart catalog rev 4 but in the 2012 manufacture of these parts the machine shop should feel free to reference the current rev 8 of the Emhart catalog.
Additional notes and changes as outlined in DCN E1100648
v3 is equivalent to rev. J
The design of this part needs to be reviewed to make it more manufacturable. Issues are still being addressed with the vendor in an ongoing basis. There is no helicoil lead in angle threads break into other threads.