Threaded Bifold roller

A quick learner from USA says:
Can you help find this? The roller is 1" diameter, 1/4" thick, 3/16" collar with a 5/16" threads post 2 1/2 " long. Anything I can substitute would be acceptable.

User submitted a photo of a bi-fold door roller.
Profile picture of Donna
Donna from SWISCO responded:
Hey, Marc. This resembles our 21-148. Check it out and see what you think!
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