I should have mentioned the 'spreader' plate will be behind the inner skin and not externally. This would leave just the drilled hole for the bolt to pass through into the nut which would in turn be welded to the load spreading plate forming a captive.

Last edited by jockbolter50; 01/07/2016 9:01 AM.
1950 Chevy Advance Design 3100 in Scotland
In the Stovebolt Gallery
More pix on Flickr.
I've definately got this truck thing in my blood ... my DNA sequence has torque settings
"Of all the small nations of this earth,perhaps only the ancient Greeks surpass the Scots in their contribution to mankind" Winston Churchill.