Patent ID: 8544506

Claim:
A method for manufacturing a rivet, the method comprising: receiving a substantial cylindrical metal member defining a central axis, a first end, and a second end, the metal member including a countersunk head at the first end, and a first cylindrical portion extending from the countersunk head to the second end, the first cylindrical portion defining a first diameter; subsequently, creating a second cylindrical portion by cold heading, the second cylindrical portion defining a second diameter less than the first diameter along the entire second cylindrical portion, the second cylindrical portion extending from the second end; creating a substantially cylindrical hollow core in order to form a tubular portion along the central axis, the tubular portion defining an opening at the second end; and subsequently, transforming the tubular portion to form a portion including a tapered internal surface and a tapered external surface, wherein the steps above are performed while keeping part of the first cylindrical portion defining the first diameter.