Yep. There is one in Paris, 20 miles from my residence. I have been there numerous times. I scrounged around and found a couple of M5 40 mm and gave them a haircut with my dremel.
Sometimes the Fastenal in Paris will not sell single pieces.
I could tap the M5 t nuts to a 1/4 20, but that would be pushing the drop in t nuts I have on hand.