The 1581-6 is a panel-mount Banana Jack with tin-plated brass contacts. Banana jack mounts into panel ranging in thickness from 0.063 to 0.375-inch. It comes with blue polycarbonate insulator, nickel-plated steel internal locking washer and nickel-plated brass hex nut.
Brass body with nickel plated finish
30VAC/60VDC Maximum operating voltage (hand-held testing)