Hardware for a 1950's 48" slinding glass door

A quick learner from Grand Rapids, MI says:
Looking for replacement hardware for a 1950's 48" slinding glass door. I can find replacement bearings but looking for the Philips head bolt along with the 2 octagon pieces. One of those is tapped and one is not.
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Paul from SWISCO responded:

You have an old discontinued Acorn roller assembly. Unfortunately the octagon washers and screw are no longer available. We carry the wheel, the 81-230, which has the spacer washers attached to the wheel. Please review and see if you think this could work for you.

81-230 : Replacement Steel Wheel
Replacement Steel Wheel
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How to maintain a sliding glass door
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