Internal screw(?)

Question

My mom thinks these are Crestline windows installed in new construction in 1994, little thin retaining ring, a bushing & a locking ring for the cover perhaps She tried closing the window and the crankscrew backed all the way out of the mechanism and popped the case off.
In the close-up of the treaded piece, is the beginning of the thread chewed up? Do i buy a whole new operator and cannibalize for the pieces i need? I went to menards and bought a truth replacement TH-23076. However the short arm of the old mechanism is 3-3/16. New one is 4-7/16. Is there a replacement that matches the old one or do i slide thetrack down 5/8 to accomadate the longer arm and the make(? )(ick) a new wood sill cap? There is a number (20755) stamped on the little arm.
Help!, and thank you.

Dan

User submitted photos of a window operator.

Tom · Accepted Answer

Thanks for posting. You will need an all new operator, yes. Based on your measurements, see our 39-155 and 39-156. I think you'll find these will line up quite well. You should be able to re-use your old cover and handle, but you still need them see our 39-107 and 39-114L.