The 111-2223-001 is a nut-grounded un-insulated Binding Post with nickel plated brass stud approved by the standard QQ-B-626D, unassembled nickel plated nut and panel thickness up to 7.15mm. Nickel plated stud with serrated mounting surface prevents turning. Captive thumb nut 2.79mm diameter cross-hole accommodates up to 10 gauge wire.