MD380A-10 is a lug nut made by Metric USA. It is a 10.9 grade alloy steel, heat treated, and plated with yellow zinc. It has a M10x1.25 thread size and is designed for use with lug nuts providing superior strength, durability, and corrosion resistance. The nut has a wide flange and is commonly used in vehicles with large wheel diameters. It can also be used for replacement on OEM hubs, drum brakes, and custom aftermarket wheels.