Replacing pivot bar (8254) on tilt window

A quick learner from Wisconsin, USA says:
October 17, 2022
The fasteners, on the bottom of the window, that attach the pivot bar (8254) are not Phillips type screws. They have a flat round head with a small center hole. I'm not sure how to remove these pins without damage.
Any suggestions?
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Casey from SWISCO responded:
October 21, 2022

Hello,

Your pivot bar looks like the 26-377 as long as the dimensions shown below match up to yours. I've honestly never seen a pivot bar installed with fasteners like yours and I suspect that you may need to drill them out while being very careful not to hit the glass in the sash. You may want to have a local professional assist you to prevent damaging the sash. Thanks for posting. 

Alternate image for 26-377
Alternate image for 26-377
Pivot Bar - Stamped 8254
Pivot Bar - Stamped 8254
26-377
$3.32
Anatomy of a tilt window
Anatomy of a tilt window
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Removing Rusted Pivot Bars
Removing Rusted Pivot Bars
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