New Thru Hull

[1970Columbia34]

I am in need of a new thru hull fitting for the head sink, its 2.5" across on the outside with 1/2" pipe thread. the outside is about 1/4 or 3/8 thick and is tapered at about 45 degres and beds into a pocket on the boat, know anyone that makes these or where i can get them?

[Tartan34C]

Groco makes a flush thru hull fitting. Stop by their web site at www.groco.net/cat_bronze.html and check it out.
All the best,
Robert Gainer