Wasili wins! Those are the parts we used to refer to at ILM as the universal greebly. The kit comes with about 2 dozen of them, so we used them like salt. They got used everywhere, and a couple times had to be remade in larger scales for enlarged sections of smaller models that already had them.
As a joke, I planted about 50 castings of a 1" version of it in, on and around a friend's desk who was sick and tired of seeing that part.