If a guy is really good he only needs one wrench on the nut side, hand tighten and put the wrench on the nut and use short quick strokes till the bottom of the bolt head grips the material and tighten.. (Unless the nut is a lock nut)
I was just thinking about this again.
With a little added setup time, I wonder how securing the head-side washer in place with a simple rubber washer (that tightly grips the bolt shaft) would work.
This will definitely add set up time.
But it would speed things along at the assembly site.
OH, but that violates the rules....
Using the same 4 pieces of hardware, how could you improve this process?
Remember now, .....Using the same 4 pieces of hardware.
the 4 pieces are being used.
i was also thinking of "tacking" one washer to the the head of the bolt (and the other to the nut) with some 2P-10.
but that stuff is pricey.
and i figured it would just cause problems if the thing needs to be dis-assembled and re-assembled again.
....and i don't like that the washers would not be allowed to free spin if they are tacked onto the other pieces.
How about a double start thread? (I realize that may be different hardware but you didn't spec out the thread)
My other suggestion would be an open ended slot rather than a hole. That way the hardware could be all assembled & slid on to the assembly then tightened.
let's say it a single start thread.
"open ended slot"
oh, i like that idea.