Hurd crank fine threads are stripped

The window are from 1988 and the crank came out the 1st time I used it after buying the house in 2015. I put it back in and it keeps backing itself out after it use. Threads in the female part of the window assembly look stripped badly. Some threads on the crank look flattened and bent. I think I need a new assemble. The arm appears to measure 9" from the center of the nylon button to the pivot point. That is an appropriate since I didn't rip the window apart. Just used a tape measure and added a 1/4" since I couldn't get all the way to pivot point.

Thanks. I'll order that one and see how it fits.