I have 2 huge nuts salvaged from a coal-to-gasoline reactor vessel that was confiscated from the 3rd Reich after WWII. The entire plant was relocated to Missouri in 1946, but it was demolished and scrapped in 2016. I salvaged the nuts before demolition.
Each nut is 200mm (8") across the flats and would thread onto a 150mm (6") diameter stud. The nut weighs 66#.
You can have one of these "GONE FOREVER" pieces for $50.
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