The choice is yours and depends upon your operation, and personal preferences. Insert rollers into the end hinge. These washers are important as they center the door and keep it from contacting the track. A plywood door is shipped with a row of hinges not attached to the top. A standard door is assembled by bolting these hinges.
Many customers prefer the break joint to be riveted.
Rivets can be supplied as an option. If the door is already painted , the rivet heads will require touch up, as the riveting operation chips paint. Care should be used when tightening the nuts at the break joint. It is easy to overtighten them. When overtightened, the heads are drawn down into the wood and break the plywood.