.

 

Can’t think of any reason there would be a naximum. Can you post a picture and dimensions of the connector? Or datasheet.

 

Can you elaborate on your question? Check the datasheet for the connector you want to use, 99% of the time the manufacturer will have recommended hole and pad dimensions in the datasheet.

 

As big as it can be before it merges with the pad for the next pin!

 

If the copper is too large you can run into difficulty with solderability.
Use a thermal relief around the pad.

 

That's not a through-hole connector - that's a panel-mount connector.

 

You can mount it on a PCB using the cutout shown, the use wires between the contacts and the PCB.

 

Could you provide a part number or link to this connector? You are very confused about something.

 

Are the pins in the image not soldered to the holes on the PCB side?

No. You are probably looking at military spec'd connectors. Connectors of that type and size are not usually soldered on to the PCB. They are mounted on a solid metal panel.

 

Are the pins in the image not soldered to the holes on the PCB side?

View attachment 291566

No pins on the drawing you posted.

 

It would seem as though you are using a component for a different purpose it was intended for, MS (Military Style) connectors are basically intended for external in-line and panel mount connectors, easily accessible for connect/disconnect purposes of equipment.
If you require a PCT board connector, these types available that are more suited to this application.
Unless you have some non-conformable reason for the style you show?