Fuel/Black water/pot H2O deck fittings

[PJHoffnet]

I was wondering if all of the screw in 'plugs' are standard sized and interchangeable (aside from their labeling), or am I going to have to find ones unique for a year/model of boat?

I know I'll probably drop one or more over the drink during the next few years and want to have replacements on hand.

Thanks in advance.

[Kevlar7r]

Pretty sure they are all standard Perko 2" fittings.

[Phillbo]

Your fuel and fresh water caps should have chains to prevent dropping them. The waist cap can not have one so that is the one that gets dropped. I bought a spare plastic one that floats in case it's needed.

[PJHoffnet]

Thanks Kevlar7r and Phillbo - I'll check the chains next time I'm at the boat and pick up a couple of spares just in case (plastic ones make sense for the quick fix).

[shrew]

They should be standardized. Not tied to make/model of boat.