a captive nut is what was there, rebuild it, was just 4 metal fingers around a square nut or a drilled and tapped steel block .... or find something close to replace it, like modern cage nuts [click "square style" on left]

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature we find it attached to the rest of the world" John Muir
"When we tug a single thing on an old truck, we find it falls off" me
Some TF series details & TF heater pics & Rust-a-holics Unanimous parking lot