No, not the nut behind the wrench!! In a quick look around, I haven't found a description of the nut used on the spring center bolt--square or hex?
And I would assume that after tightening the nut, one should peen the end of the bolt to prevent loosening??
BTW, the bolts are works of art--many thanks to Bob & others who made this happen!!
I think it might be square, that's what the Model A used. After the nut is installed cinched down and the excess bolt is cut off the end should be peened over to keep the nut from backing off. The thing about a square nut is it has only four corners to help lock to the spring leaf, the hex is more round and has less surface area.
The front spring bolt nut is 19/32" square x 5/16" thick. The thread is 5/16" x 18 tpi.
The rear nut is 9/16" square x 3/8" thick. It is threaded 3/8 x 16 tpi.
Hope this helps.
thanks RV, never thought about the nuts when I bought the bolts!
Duh, , , ,