So, I don't think this is considered a torque tube, but I could be wrong:
[img]https://www.stovebolt.com/ubbthread...umber/35473/filename/20210225_180110.jpg[/img]

On the other hand, the spare (later) sm420 has this:
[img]https://www.stovebolt.com/ubbthread...umber/35474/filename/20210225_180023.jpg[/img]

1948 Chevy Thriftmaster 3/4-Ton
Poncho "farming" in Ontario
Starting in the DITY
Continuing in the Project Journals
More images

There are only 10 types of people in this world, those who can read binary and those who can't.