Need some specs for the rudder pin.

So I bought myself 3' of 316 stainless rod for $20. I support a bunch of fish at the yacht club. I own a 9" Southbend lathe. No reason I cant make my own. My problem is I just used up my last spare and all my fish are at the club. If someone happens to have the overall length of a pin I can figure out the rest from the broken pin. I am missing the area from the long end to the narrow section.

Thanks