[Billsseacraft]

I think I have solved my problem. I spent some time this moring going through catalogs at a local marine supply store and found 1npt"x5" thru hull drains. These have the mushroom shaped part at the end that will go to the bottom of the boat and the nut will secure at the deck. The shop recommended that I use 5200 to secure. The outside diameter of the pipe is just over 1.250 this should fit almost perfect and be stronger than the plastic drains I had before. Thanks for all the suggestions I appreciate the help.