Yes, this would fit a 55 gallon drum opening.
Top 25 Contributor
Strangely, standard 55 gallon drum 63mm Buttress(course) thread is also called 2 inch Buttress thread, though it's not 2" in any aspect, it's 63mm outside thread diameter. Most 55 drums have one 63mm buttress bung and one 2" NPT bung. Though some have two 63mm bungs and no NPT. Which makes this adapter very handy if you need the NPT.
answered 1 year, 3 months ago