KH Caliper Bolt - what do I have?

There is fantastic thread in the Brake Forum where a guy did a K-H job and documented everything really well. Unfortunately it is not a sticky. He also called out a replacement for those bolts and where to get them. They are:
Fastenal Part: 18877, 7/16-20x1.75 YZ8
I went down and ordered them and they came to the store in 2 or 3 days. They seem just fine. They cost $1 each.

Wrong.
That is false information that you are trying to pass along.
Those Fasternal bolts are nothing more than standard, grade 8, fine thread bolts.
You can get them anywhere, at a well stocked local hardware store, McMaster Carr, Fasternal, or other internet bolt, fasterner, sellers.
That Mopar, Kelsey Hayes, bolt was rather unique in whats called the "shoulder" length of the diameter, and that's why the guy up in Canada saw fit to reproduce them.
They are not absolutely necessary to be used on the Kelsey Hayes calipers to mount to the spindles.
If that was the case i would have bought those buck a piece bolts, and sold each one at $12.00, years ago, and fattened up my bank account.