Originally Posted by GREG DOE

706jim said he used a 7/8" box wrench on a round spinner nut? I guess he must file, or grind a hex pattern on them? The old Harry Higley safety prop nuts had a hex pattern, as well as a hole for a rod to tighten the nut. I've not seen any of the DuBro prop nuts with a hex, but that could be a more recent design?