Includes heavy duty connectors designed for high current and mechanical stress applications, such as bulkhead housing connectors and rectangular hood connectors. Excludes photovoltaic (solar) connectors, circular and rectangular connectors, card edge connectors, terminal blocks, board-to-board connectors, crimp and solder terminals/splices, backplane connectors, flat flexible cable (FFC) and flexible printed circuit (FPC) connectors, D-sub connectors, and other non-heavy duty connectors.