Grog said:
Not to dump on catch22 but don't use brass, you don't want dissimilar metals. Lowes might sell Aluminum, even PVC will be better than brass.
Ouch.....lol. I knew that would come up.
I didn't want to get into a debate about that, but.... Like I stated before, I've been using the brass on different boats for years, (in a slip) and never saw any corrosion, or seemed to have any problems, and yes, I do use teflon tape on the threads to help with sealing. It also makes removal easier.
I realize there's a legitimate arguement about disimilar metals, but the way I see it is, you already have disimilar metals, (bronze water p/u with ss screws, lower unit is aluminum and it has plenty of ss hardware, not to mention a ss prop, bronze transducer?, ss hardware on the bracket itself, etc, etc). I really don't think it's that big of a deal, especially when it's slipped, because not only do you have the teflon tape as a barrier, but you also have the entire bracket painted.
Hey, when in doubt.... do the right thing and get the aluminum plug. Mostly, I mention the brass type because of convenience.... they're readily available at most stores. Plus, I've seen the aluminum plugs get chewed up too easily, because they're soft.