Threading in girder nuts - GIF

[Altair]

Threading in girder nuts.




Previously:

Forging nuts - GIF
Tightening haul truck lug nuts - GIF
Threading nuts - GIF
Transmission tower lock nuts - GIFs
Spinning nuts in tight spaces - GIF

[mdhatter3]

Reverse threaded nuts ?

[sossol]

Reverse threaded nuts ?

Or the video was flipped - an old trick to fool copyright software that relies on matching imagery. I can't read Chinese script, don't see any numbers, and there are no visual clues such as logos, so I can't tell whether the text is forward or backward.

Neil