I was going to say, normally there is hole size specifications and you just want to make sure you have enough side wall thickness. Often it will be like 1.5-2x the thickness of the retaining nubs, so they don't break in to the infill and have enough material left that there is still strength at the points.
Just remember these are more for repeat removability than thread strength in most cases, as often with standard infills you will tare the entire hole out of the printed body before the threads will fail even with out an insert.