Connector mating center offset. The reasons for this situation are generally as follows: ● The mating center distance of the connectors is inconsistent, and the plug terminals interfere with the socket terminals or the socket sheath during mating, causing the terminals to be pushed out; ● The mating gap between the connectors Too large, causing the center of the connector to deviate during the mating process, resulting in defects; ●The matching gap between the plug terminal and the plug sheath cavity is too large, or the plug terminal lacks a reliable positioning structure in the sheath, resulting in the offset of the terminal head , which affects the normal mating of the connector; ●The plug terminal is deformed after being crimped, causing the terminal to be offset after assembly, resulting in the occurrence of defects.