500PCS Rivet Nut Assortment Kit Metric Threaded Inserts M3 M4 M5 M6 M8 M10 for Metal Wood Plastic Features： 1、These rivet nuts are suitable for various material thicknesses, including steel, fiberglass, and plastic. They are firmly riveted, efficient, and convenient to use. 2、These half hexagonal shank nuts have large flanges that can improve the strength of punching and drilling. 3、Application: Very suitable for automobiles, furniture, decoration, and other electrical and industrial products. Specification： Features: These rivet nuts are suitable for various material thicknesses, including steel, fiberglass, and plastic. They are firmly riveted, efficient, and convenient to use. These half hexagonal shank nuts have large flanges that can improve the strength of punching and drilling. Application: Very suitable for automobiles, furniture, decoration, and other electrical and industrial products. Specifications: Material: galvanized carbon steel Size: M3 M4 M5 M6 M8 M10 Head type: Flat head body Type: Half Hexagonal Packaging size: 19.5 * 13 * 3.5cm Packaging List: M3 * 150 pieces M4 * 150 pieces M5 * 100 pieces M6 * 60 pieces M8 * 30 pieces M10 * 10 pieces Package List： M3 * 150 pieces M4 * 150 pieces M5 * 100 pieces M6 * 60 pieces M8 * 30 pieces M10 * 10 pieces