I am looking for the blind pop rivets so I can anchor the medallion back onto the frame I restored. Bike looks great and I turned it into a fixie project. However, the last touch is getting that medallion on the frame and I am coming up empty for these blind pop rivets. Anyone know where I should look or potentially have these pop rivets/anchors?

The hole is 1/16th and Im not exactly sure the depth for the bite of the rivet.

Any help would be greatly appreciated. Thanks.