Can the 39-107fk replace the 39-107?

A handy person from Grand Rapids Michigan says:
I have a crank on Mrvin windows from 1986, handle with the # 45012 stamped on the back side. The cover I have is like your 39-107 cover. Can I use your 39-107FK to replace this crank and cover
Thank you
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Tom from SWISCO responded:
Yes, the 39-107FK can be used in place of the 39-107.
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