Tamiya uses a 3mm hinge pin.
Not all the pins listed at 3mm are the same.
I was in a pinch and found that most of the Hudy tools that I use were made with a 3mm shaft and ground down to the 2mm allen head.
So if you have a worn out tool be sure to check the shaft for its size.
You maybe able to use it some day.
The replacement shaft from Hudy is about $10 and you get 3 long pins from it. So the cost is more but not real bad.
Good Luck
