National standard riveting nut specifications are as follows: 1 M3, M4, M5, M6, M8, M10, as well as the M12, generally recommended M6 and the specifications of the M8, is also more commonly used specifications, general small thread can be directly on the substrate tapping screw thread connection, large screw bolt weight too big to have increased, but because of the rivet nut connection strength increase is limited, so the match is not reasonable.fastening areas for plates and tubes of various thickness (0.5mm -6MM).Use pneumatic or manual riveter can be riveting, convenient and firm;Replace the traditional welding nut, make up for metal sheet, thin pipe welding fusible, welding nut is not suitable.