Is the base of the dildo threaded? ISO

Hi everyone, I’m posting here. On other subreddits, especially the male chastity ones, I’ve seen some chastity cages that have a place to screw a dildo in (like a 7mm screw on the bottom). To me it looks like the same screws that screw into the bottom of a camera for a tripod. Anyway, I thought it would be easy to search for “threaded dildo” or something similar. But my initial searches were unsuccessful. Does anyone know the correct name or search term to find these? TIA

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