The rivet nuts are ideal for creating strong, permanent threads in metal sheets. The zinc alloy construction provides durability, while the flat head design ensures a flush finish. To install, drill the appropriate size hole, insert the rivet nut, and use a rivet nut tool to secure place, ensuring a firm hold in the material. Features -Color:Silver -Material:Zinc alloy -Size:1.00X0.80X0.80cm/0.39X0.31X0.31in; ( ); thickness: 9mm; outer diameter: 5mm -Size:1.40X1.10X1.10cm/0.55X0.43X0.43in; (M5); thickness: 13mm; outer diameter: 7mm -Elegant knurled nut design: the knurled nut design adds an elegant charm while providing a better grip for easier and more secure installation -Easytoinstall flat head: the flat head vertical striped rivet nut is designed for easy and secure installation, suitable for various applications -Rivet nuts set: this set includes sufficient rivet nuts, offering ample supply for different projects and ensuring you always have enough on hand -sturdy and reliable: made from reliable materials, these rivet nuts are built to last, providing reliable performance over time -Ideal for mechanical equipment: these rivet nuts are suitable for use in various mechanical equipment, offering versatility and convenience Package list: 100 x rivet nut