Zinc SEM screws are a type of fastener that is used in a variety of applications. These screws are made of zinc-plated steel and feature a self-tapping design that allows them to be easily installed without pre-drilling. The zinc coating on the screws provides excellent corrosion resistance and helps to prevent rust and other damage caused by moisture and other environmental factors. Zinc SEM screws are available in a variety of sizes and lengths, making them suitable for a wide range of projects. Product Name: Carbon Steel Zinc SEM Screws With Flat Washer Size: M1.6-M52 Material: SS304, SS316, SS316L, SS2205, SS660, S32750 Duplex stainless steel, carbon steel, Brass, Aluminum Standard: GB, DIN, ISO, DIN, ANSI, JIS, BS and Non-standard Surface: Passivate, Zinc, Black Oxide, Powder coating, Zinc-Nickel, Geomet, Dacromet Class Grade: 304,316,2205,660,4.8,8.8,10.9,12.9 Thread type: UNC, UNF, UN, UNS, UNRC TS Hardware is an ISO9001:2015 certif…