Pivot pin locking cam for wood double hung window unknown manufacturer

We don't have a pivot pin exactly like this, but one of ours may still work as a substitute. Before I make a recommendation, can you show me the shoe into which this pivot inserts?

Thanks! That looks like our 15-014 knife lock shoe, used on the Series 751 balance. With that in mind, I recommend the 26-150 pivot pair. These are fully compatible with the 15-014 and should also work for your window.

As for whether you need a new shoe, I would say that you do since it looks like the rivet and knife lock itself are totally removed from the original.