Paul from SWISCO responded:
September 30, 2016
It's tough to say what could replace this without seeing the whole thing. Could you use our 23-158 trolley? If not, do you have a complete roller unit on hand we can use as reference?
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Tom from SWISCO responded:
October 12, 2016
We carry many other kinds of screws, though I'm not sure exactly what size you need. Your best bet is probably to bring an original screw in to a local hardware store for them to match up.
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