Nuts and screws are used to fix and connect parts. The patch nut is generally used in the circuit board industry for fixing electronic components. That is, the patch nut is soldered to the circuit board, and the electronic component is fixed by turning the screw. However, when the current patch nut is welded on the circuit board, there may be uneven solder, resulting in uneven welding. At the same time, during welding, excess solder spills from the nut periphery, which affects the appearance and may affect its electrical properties. Moreover, the nut is welded with the circuit board only on one end face, and its solidity and reliability are low after welding. In addition, the current nut processing technology is formed by lathe processing, lathe processing method of low production efficiency, high cost, for this small size of patch nuts, using this lathe processing method, can not meet the requirements of mass production