A binding post is a threaded device used to connect single conductor wires to other wires through a panel or board. These devices usually include a banana jack within the threaded nut and may also contain other connector types. The characteristics are type, head style, termination thread, current rating, and material. The head type is fluted, hex, knurled, and smooth – spring loaded with a termination thread of M4, M6, ¼-32, 4-40, 6-32, 8-32, and 10-32.