Casmount window cranks

Question

I'm looking for replacements, or a fix for my casemount window cranks. Here are some pictures.  Found a number on one, hoping it's a part number.  Truth is stamped on parts, I think the u a 9 inch arms.

Casey · Accepted Answer

Hello,

Your operator resembles an older style version of the 39-027E shown below. Note that the arm length is measured from the center of the gear.

Dimensions for 39-027e

If you need new hinges as well, take a look and see if the 10" long base of the 36-048 set matches yours. Thanks for posting!

Detail of 36-048