I've got to put in some new thru hulls and of course the stem length
of the fitting is about 3" long. The hull is ~3/4" thick, the portion
that sits in the seacock is perhaps 1" which leaves 1-1/4" or so to be
made up with backing pads. This is a bit excessive to me and probably
dates back to wooden boats with 2" thick planking!

Anybody ever cut their thru hull fitting before installing it? I'd
leave the nut on to chase the threads after cutting, and cut it with a
hacksaw or cut off wheel on an angle grinder.

Thanks,

Evan Gatehouse