A regular M18x1.5 bolt picked up at a bolt supply house or a Case/International farm implement dealer will work too. Just get one 20-25 mm longer than the bolt holding the rotor on.
BTW, welcome to the Vulcan madness.
Also if your thread title has something to do with the topic, it makes it easier for someone scanning the index in the future to find the information. Just a heads up. The purpose of these forums is not just to help one individual, but to create a resource for all members of the board, now and in the future.
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