You just fitted your own chain, but are having trouble doing the wheel nut up? Did you change sprockets too, and if so did you check for the new size front sprocket nut?
Surely the specs you should be riveting to, are in the packaging with the chain? Certainly have been when I've done mine
As a ball park figure you could measure the diameter of the hole in the link on the old chain and see how that compares to the diameter of the rivet that you've done.
A new chain and sprockets always feels good. My fazers still on the original at 33000 miles but ive got a new one ready to fit. DID's do seem to last well. Btw if you have a digital vernier you may want to double check your reading in inches just to be doubly certain but im sure its fine.