Need replacement screws for ACME top roller

A home owner from San Jose, CA says:
See attached 3 pictures. The screws fell out of 4 of these closet door roller hangers. The stamping on the brass- colored part is "US PAT 3750337"

The dimensions are 3 3/4" long, 1 3/4" wide, with a white 7/8" diameter roller. Is it possible to just buy the screws? If not, if I buy replacements, how does install, attach these parts?

Suzanne in San Jose
User submitted photos of a closet door roller.
Profile picture of Tom
Tom from SWISCO responded:
Hey, Suzanne. Check out our 23-027 and see if you think this could be a good match. These kind of rollers install via the metal tabs. You will need to fit them in the appropriate slots on the door.
A quick learner from San Jose says:
Thank you for your reply. Does your part come with screws? And would those screws fit in my original rollers?
If they did, I wouldn't have to take off the old rollers, right.
Profile picture of Tom
Tom from SWISCO responded:
Our roller does not come with screws. It attaches via the metal tabs. If you do find yourself needing screws, you can check with a local hardware store.
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