https://www.ducati.ms/threads/trip-odom ... nut.50672/
This is a very uncommon M14 nut. You won't find it at Ace Hardware or O'Reilly's. McMaster-Carr only had 1.5 thread pitch, 7mm high. Then I found an M14 x 1.0 x 4mm nut in packs of 5 on Amazon for $7 delivered the next day.
https://www.amazon.com/dp/B0FLYQH87L?re ... title&th=1
It fits perfectly! Problem solved. The original nut was black, so I will rough it up and paint it black.