Airmaster window crank, help identifying part

A quick learner from Culebra, Puerto Rico says:
Hi - I hope that you can help me to identify a replacement window crank. We have about 20 of these Airmaster windows in the house that we just purchased and they all need new window cranks. The windows are about 20 years old.

The distance between top and bottom holes on the window frame is about 5 1/8". The distance between lower left and right holes on window frame is about 7/8". The arm that came with the window has a 3/8" hole to attach the link arm. I have a feeling that the cranks have been replaced before. The photos that I have attached show the cranks that are being removed. They attach the link arm to the window by passing through the 3/8 hold via a small diameter threaded screw with a large Phillips head. The length of the crank is 3 1/8" and it has a threaded hole at the end. I thought 39-112 would work, but it has a 3/8" hole. What goes through the 3/8" hole on both pieces if I use that one?

By the way, can you ship to Puerto Rico?


Jeff W
User submitted photo of their window operator.
A quick learner from Culebra, Puerto Rico says:
As I watched one of your videos and looked again at the crank that I removed, I now see that the link arm has a threaded sleeve that inserts into the hole in the window arm. Still not sure if one of your replacements will work...
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
I'm wondering if you could use our 39-025 and simply re-drill the bottom holes. The outer hole on the lower base would have to line up, which would allow you to just drill the one other hole needed. Check the holes on the 39-025 and see if at least one of them will line up to yours. Also check the other dimensions to be sure they match.
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