If you are implying that I'm wrong in my post, you did not read it. I'm talking about differences in fasteners and fittings ACROSS DIFFERENT countries and continents.
Fittings from Poland are not necessarily the same as from Germany, or from Japan. Bolts and fasteners from those same countries have their own "favorite" thread pitch, meaning bolts and screws from a French something won't fit any Japanese car
The point is that things are not as "standard" as people think.
Holley traditionally and likely still does use oddball machine threads in their carbs
