Marelon 1 1/2" through hull fitting

[Tmacmi]

Does anybody know the size of the nut on these fittings?

[coopec43]

Originally Posted by Tmacmi

Does anybody know the size of the nut on these fittings?

I think for through hulls you need one of these.
https://www.ebay.com.au/itm/Adjustab...QAAOSw6eJdHUFn

[kenbo]

The thread is 1.5" npt parallel not tapered.

[Sailmonkey]

Originally Posted by kenbo

The thread is 1.5" npt parallel not tapered.

Also known as NPS

[Tmacmi]

Originally Posted by Sailmonkey

Also known as NPS

Thanks to all for the info. I am wondering about the dimensions of the nut itself. I know most people use an adjustable wrench to loosen the nut. Because of the location of the fittings I would like to get a suitable sized deep socket to loosen the nut.

I already have the tool to twist the fitting from the outlet side.

[kenbo]

Originally Posted by Tmacmi

Thanks to all for the info. I am wondering about the dimensions of the nut itself. I know most people use an adjustable wrench to loosen the nut. Because of the location of the fittings I would like to get a suitable sized deep socket to loosen the nut.

I already have the tool to twist the fitting from the outlet side.

Cant help you on the dimension of the flats on the nut, but if you're having trouble fitting a crescent wrench on because of clearance issues try a large size basin wrench.

[kenbo]

Originally Posted by Sailmonkey

Also known as NPS

You are correct of course, but the reason I stated it the way I did is that's how it's described in the Forespar catalogue.

[Tmacmi]

Originally Posted by kenbo

Cant help you on the dimension of the flats on the nut, but if you're having trouble fitting a crescent wrench on because of clearance issues try a large size basin wrench.

That's a good plan. Thank you.