Window sash parts

Hello there!

You're correct, our 15-177 is indeed the correct pivot shoe. This is compatible with a handful of pivot bars but the best fit ultimately depends on the original. Would it be possible for us to see a few photos of the old pivot bar removed from the sash? 

Is there an identical window in the house? If so, we can use that as a reference.

If not, we have related the compatible pivot bars on this page. Have a look and see if you think one of them could be adapted to your window sash.