Metric flange bolt assortment provides a practical collection of metric flange bolts paired with nuts and washers for common fastener work. The set covers M6 bolts in lengths of 12, 16, 20, 25, and 30 millimeters, M8 bolts in 16, 20, 25, and 30 millimeters, and an M10 bolt at 30 millimeters. A total of 280 pieces are included, with fully threaded bodies designed to grip securely across a range of mounting tasks. The bolts are manufactured from 10.9 grade alloy steel and finished in black zinc galvanization to improve durability and corrosion resistance in typical workshop environments. Strength guidance indicates that high torque applications benefit from the 10.9 class, while lower grade bolts are not suitable for such loads. The assortment is organized in a reusable plastic container with labeled compartments, making it easier to locate the required size during project work. Charts inside and on the lid assist with size selection and planning before installation. The flange features serrations that enhance resistance to loosening when vibration is present, which supports stable mounting of components subjected to motion. This set suits home improvement, automotive projects, and engineering experiments, providing a compact and organized fastener solution for on site or shop use.