The military connector contains three important components: the ferrule, the needle and the housing. The ferrule and the needle piece form a power module that provides electrical connection to the device, while the outer casing is made of metal or thermoplastic materials. The structure is strong and provides reliable mechanical and environmental protection for the electrical connection. The waterproof and anti-corrosive properties of the metal casing ensure that the military connector can work in harsh environments and even meet the customer's outdoor connection needs.