Made of carbon steel with zinc plated finish, it has higher hardness, corrosion resistance and rust resistance, and provides a firm fixing indoors and outdoors.The self-drilling screws can drill well into the wood, sheet metal and other surfaces. The thread can reduce the resistance when screwing in and prevent cracking.It can also connect metal hardware to the wood well because the fully threaded rods provide good retention in the wood.Widely used in various industries such as manufacturing, construction, engineering, and assembly.Specification:Material: Carbon SteelFinish: Zinc PlatedThread Size: 1/4 x 1-1/4"Screw Head Size: 12.5 x 6mm / 0.49" x 0.24"(D*T)Hex Width: 9.5mm / 0.37"Package Content:25pcs x Hex Washer Self Drilling Screws
