Assistance Identification of Pivot Shoe Replacement Part No.

Looking to replace several pivot shoes that have deteriorated and broken apart (see attached photos of an intact pivot shoe).

I have already identified the associated Pivot Bar part number and installed them as replacements (they work great, except, of course, in the windows with failed pivot shoes). In the event it helps to know the pivot bar part number, it is 26-241, identified as "Pivot Bar, 3"."

I have also already identified the correct "tilt latch set" for these windows and installed them. They also fit perfectly and function as intended. That set is part number 26-334.

Later on, I intend to replace a few channel balances as well, but, for now, I'm going step by step.

Thank you for your assistance.

Looks like it's 7/16th, but I'll go with 1/2 inch (15-135), allowing that the sliding stop at the tip of the tape measure might be throwing off the measurement by 1/32nd to 1/16th of an inch.

Thanks again!