There are threaded drain plugs? Sorry, I've only seen the rubber ones you just stick in and clamp down the handle which expands the center to make it watertight.
Sorry, I am new to this boating stuff. Where do I find the garboard drain plug?Re: searay drain plug?
The normal garboard drain plug is 1/2" NPT pipe thread, and usually go in about 1/4" to 3/8"
They don't screw in flush.