Item Type: Rivet Nut Material: Carbon steel Category: Color Zinc Flat Head Rivet Nuts Exterior Treatment: Color zinc plating SpecificationM3 Approx.M4 Approx.M5 Approx.M6 Approx. Inner Diameter3mm / 0.1in4mm / 0.16in5mm / 0.2in6mm / 0.24in Outer diameter4.9mm / 0.19in5.9mm / 0.23in6.9mm / 0.27in8.9mm / 0.4in Inner Diameter of Head5mm / 0.2in6mm / 0.24in7mm / 0.28in9mm / 0.35in Head Outer Diameter8mm / 0.31in9mm / 0.35in10mm / 0.39in12mm / 0.47in Head Thickness0.8mm / 0.03in0.8mm / 0.03in1mm / 0.04in1.5mm / 0.06in Total Length9mm / 0.35in11mm / 0.43in13mm / 0.5in15mm / 0.59in Riveting Thickness0.5 ~ 1.5mm / 0.02 ~ 0.06in0.5 ~ 2.5mm / 0.02 ~ 0.1in0.5 ~ 3mm / 0.02 ~ 0.12in0.5 ~ 3.5mm / 0.02 ~ 0.14in Package List 100 x Nut 1A variety of nuts of different specifications, all nuts are classified, easy to carry and use. 2These rivet nuts are suitable for various metal plates, fastening pipes and other manufacturing industries. 3Widely used in the assembly of automobiles, aviation, railways, refrigeration, elevators, switches, furniture, decorations and other electromechanical and light industrial products. 4The exterior is coated with colored zinc, which is resistant to wear, oxidation and corrosion, and has a long service life. 5Overall smoothly, flat without burrs, exquisite workmanship, strong and durable.