Jerry Carter
Well Known Member
I hung the wings on my RV-7 today for the final install. When I went to install the large locknuts on the bolts (plans call for AN365-720A nuts per drawing 11 - AKA MS21044N-7), I found that I have two different size nuts in my collection. I have moved my project twice, and the hardware has been organized into little bins in my hangar, so they are no longer in the little paper bags. One requires a 5/8" wrench and the other needs a 11/16." The threads are the same and the nylon insert is the same green color on each. I have seven of the smaller and three of the larger. I can't find anywhere what the actual wrench size for the nut is supposed to be - 5/8 or 11/16. Does it matter other than having one bolt (or more) requiring a different wrench to torque it down? Thanks for your help.