#8×1/2" Hex Washer Head Self Tapping Screws;1PCS Magnetic Socket Driver Bit tool. Self Tapping Screws are made of 410 stainless steel. Compared with traditional stainless steel, 410 stainless steel has higher density, better stability,Can be used in outdoor or humid environment, and has strong corrosion resistance and acid resistance;Note 410 stainless steel with magnetic. Advantages: Higher stability,Self-tapping screws with drill bits can directly drill into metal surfaces without pre-drilling. The thread is smooth,sharp and firm,with uniform stress and no slippage or deformation. Application:Hex washer head self tapping screws are widely used, suitable for fixing and connecting wood, thin metal, plastic and other materials;Widely used in construction, engineering, manufacturing, assembly and other industries. These outdoor-rated self drilling screws work perfectly for gutter installation, roofing projects, trailer exteriors, metal siding, and any exterior construction where weather exposure is a concern.Suitable for harsh environments such as high temperatures, cold weather, and high humidity. Product packaging:A total of 230pcs #8×1/2" Hex Washer Head Self Tapping Screws;1PCS Socket Driver Bit tool for self-tapping screws;Placed in a plastic box for easy access and use,It provides great convenience for you to use. self tapping screws;self tapping screws for metal;sheet metal screws; metal screws;stainless steel screws;self drilling screws for metal;