Abstract: An automatic nut screwing device includes a positioning mold plate, a screw shaft, driving gear elements having driving gears, and transmission screwing elements having transmission screw gear units, bolt heads and bolt bodies. The transmission screw gear unit engages an upper out surface of the bolt head. The bolt head of each transmission screw element is fixed with the positioning mold plate. The shaft engaging portion engages with the transmission screw gear unit. The transmission screw gear unit engages with the driving gears such that the transmission screw gear unit is driven to rotate by the shaft engaging portion. A nut socket placing element has nut sockets when the screw shaft is axially rotated to enable the shaft engaging portion of the screw shaft to drive the transmission screw elements, thereby successively rotating elements that result in screw body being rotated to screw with the nut.

Abstract: An automatic nut screwing device includes a positioning mold plate, a screw shaft, driving gear elements having driving gears, and transmission screwing elements having transmission screw gear units, bolt heads and bolt bodies. The transmission screw gear unit engages an upper out surface of the bolt head. The bolt head of each transmission screw element is fixed with the positioning mold plate. The shaft engaging portion engages with the transmission screw gear unit. The transmission screw gear unit engages with the driving gears such that the transmission screw gear unit is driven to rotate by the shaft engaging portion. A nut socket placing element has nut sockets when the screw shaft is axially rotated to enable the shaft engaging portion of the screw shaft to drive the transmission screw elements, thereby successively rotating elements that result in screw body being rotated to screw with the nut.

Abstract: A weld nut has a base panel and a nut. The base panel has a through hole formed therethrough and multiple weld points formed on a bottom thereof. The nut is mounted securely in the through hole in the base panel and has a nut body, a connecting section and a threaded hole. The connecting section is formed on and protrudes axially from the nut body and is mounted securely in the through hole. The threaded hole is formed through the nut body and the connecting section to screw with a bolt. The base panel has a lower carbon content and has an excellent weldability to make the weld points easy to be welded on a workpiece. The nut has a higher carbon content and has an enhanced hardness to prevent deformation resulting from an axial force.

Abstract: A weld nut has a base panel and a nut. The base panel has a through hole formed through and multiple weld points formed on a bottom of the base panel. The nut is mounted securely in the through hole in the base panel and has a nut body, a connecting section and a threaded hole. The connecting section is formed on and protrudes axially from the nut body, is mounted securely in the through hole. The threaded hole is formed through the nut body and the connecting section to screw with a bolt. The base panel has a lower carbon content and has an excellent weldability to make the weld points easy to be welded on a workpiece. The nut has a higher carbon content and has an enhanced hardness to prevent deformation resulted from an axial force.