Missing No Jive hex nut

For a while, I’ve been missing a hex nut from a 1998 Tom Kuhn No Jive 3-in-1 that I got for Christmas 2015. I don’t want to have to glue my yo-yo together, nor do I want to have to ask my dad to buy me a new set of hex nuts online. So, do you know what I can use as an alternative for the hex nuts?

I sent you a PM. :wink: