'48 Panhead Seat Tube - rivet fitting

[harleygreg]

Hi - the pin in my seat tube appears to be welded in (see photo) and should be 'peened' (see photo). I imagine this was done in the factory using a press and a 'set'. Would anyone know the 'set' dimensions, or just the diameter would probably be ok?

Thanks


seat post mine.JPEG


seat post 1.jpeg

seat post rivet.JPEG