Operator fasteners

A quick learner from Flemington, NJ says:
Need hardware to hold base and crankhandle to secure it while opening and closing window.I need hardware to replace the corroded screws that tightens the base or crank handle. Can you suggest anything?
User submitted a photo of a window operator.
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Tom from SWISCO responded:
I sure can. Start with our 39-090 and 39-089, these may be what you want. I would recommend going over our dimensions just to be sure.
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