1A2?70 Stainless Steel: Made of high quality A2?70 stainless steel, which is corrosion resistant and high in strength. 2Complete Size: The size of the hex nut is complete, which can fully meet your use needs. 3Wide Uses: Hex nut is suitable for professionals, amateurs, landlords, repairers and other DIY. 4Most Common Used Nut: The most commonly used nut, usually installed at the end of bolts or other accuracy screw. 5Application: Designed for insulating materials, easy for welding penetration, widely used for industrial machinery.