The post that sets into the spring clip and engages the slide stop when removing panel
A quick learner from Wisconsin says:
October 18, 2021
I am looking for replacements for the post that clips into the window springs. The picture has two of them in it. One broken and one bent. Picture also shows where it's mounted writhin the panel
Bob from SWISCO responded:
October 22, 2021
This is called a pivot bar. Start by checking out 26-226. This looks promising, but compare the dimensions and see if it matches what you need.