Screws for window crank 39-017

A home owner from USA says:
I am looking at Window Crank Model 39-017 to replace and existing one with worn gears. Can you please let me know Model No for the four screws need to fasten the crank on to the window frame? Is it 33-067 or 33-081?

Your team has been very helpful to me in June 2011, when I ordered some parts for the same house in Florida.
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Dave Sr. from SWISCO responded:
To install the operator body to the window itself, you would need to use the 33-081. You will also need the shoulder screw that attaches the link arm to the window linkage; see our 33-067.
A quick learner from Florida says:
Thanks for your advice.
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