D-sub contacts are contacts that are designed to be used in connector assemblies made specifically for D-sub connectors. The contacts are normally made from copper alloy and gold-plated in order to prevent oxidation. They have a number of pins and sockets on them, which then fit into the corresponding pins and sockets on the connector when the connector is installed. The contacts are designed to provide electrical continuity between the connector and the device it is connected to. They are also designed to be durable and reliable and provide a secure connection.