The 211772-1 is a 19-position circular black Plug Housing, made of nylon. The AMP connectors designed to meet requirements of VDE and Keyed mating alignment type with threaded coupling and free hanging mounting style. UL94V-0 Flammability rating 23 Shell size Connector Type Plug Housing Type For Male Pins Number of Positions 19 Shell Size - Insert 23-19 Contact Type Crimp Contact Size 16 Mounting Type Free Hanging (In-Line) Fastening Type Threaded Orientation A Shell Material Polyamide (PA66), Nylon 6/6, Glass Filled Housing Color Black Applications Industrial