As this copper rivet has a solid shaft without hollow space, it is very tough and resistant to corrosion.
Put a burr washer on the shaft, and swage with the dedicated installation tool.
Then, adjust the length of shaft with nippers. Round Hole Punch #12 makes a hole in the applicable size.
Shaft Diameter: 3.8 mm
Shaft Length: 3/4" (19.1 mm)
Head Diameter: 11.1 mm