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Screws for joysticks and IPAC mounting...
ErikRuud:
When I upgraded my panel from the Crayola 3" trackball to a Betson 3" trackball, I had to do something about the oversize hole from the Crayola ball until I get around to making a new top for the CP.
I used some aluminum screw posts from Ace Hardware instead of carriage bolts. They are even lower profile than a carriage bold and the heads are smooth. This is what they look like.