I measured the pin and opening on my table this morning. The overall length of the pin os 5.5 “ long. Its diameter is 0.44” wide. The opening it goes through is just slightly larger 0.46” .
Yours may vary, being a larger boat than mine, but the shape and style of the pin should be the same.
Hope this helps you.
I know the tables are very heavy and not having the proper holding pin only makes raising and lowering them all that much more difficult.
The vertical tube you see in my photo was for a halyard. My friends 380 had a pulley and line that fed through that tube. And a small cleat on the mast column.
It made the raising and lowering his table so simple and easy. But for some reason Hunter discontinued that feature in 2000.