Material: Made of high quality carbon steel;Packing List: 100pcs xM3x6mm Flat Head (Countersunk Head) Small Screws, 100pcs xM3 Hex NutsScrew Length:6mm (including the height of the flat head); Please pay attention that the Thread Length equals to Total Screw Length minus the Head Height.Application: Ideal for use in tight areas where the head needs to be flush or below the surface.Note: The package contains small parts, please do not let children play to prevent accidental swallowing About Pan Head (Countersunk) Machine Head Screws Pan head (countersunk) machine head screws have a flat top that tapers to a taper that can be flush with the countersunk hole and provide a full appearance. They are known for their efficient application performance and Known for their durability, they are used in a wide variety of industries such as construction, manufacturing, engineering, assembly, aircraft, and are widely used by professionals, hobbyists, landlords, repairmen and DIYers Notice: The length of a grub (countersunk) machine screw is measured from the top of the thread to the end of the thread, and the thread length is the total length minus the height of the head. Track Page Views WithAuctiva's Counter