Repairing G1 Starscream

Anyone know a good replacement option for the neck pin on the g1 seekers? I found a random nail around the house that does the job temporarily but it's too long and a little thin.
Specific measurements or links or a store to look at would be most appreciated. I've already tried Lowes and have had a lot of trial and error.
Thanks!

Specific measurements or links or a store to look at would be most appreciated. I've already tried Lowes and have had a lot of trial and error.
Thanks!
