[19Fordy]

First, buy a couple of pins in case you "booger" one up.

I don't know that exact answer but, I do recall that the replacement I bought was smaller in dia. than the hole. That surprised me as I thought it would be an interference fit. Therefore, I assume that the OEM pin was placed in the hole and swedged into place like a hot steel rivet.

I know it seems crazy but used I decided to use a 1/4-28 grade 8 bol. t I covered the shank with a thin coat of solder and pounded it into position. The excess solder was sheared off as it when into position. Then I used Locktite on the nut and punched the threads. That was 3 years ago,
So far , so good.

If I had to do it over I would heat the replacement rivet hot enough so that I could place it in the hole and swedge it to "fill" the hole and then form the head with a ball peen hammer or a rivet set.

If I had a lathe I would consider turning down a piece if steel just a little oversize and then hammer it into position and form the head.

I am sure others have some excellent answers instead of what I did.