Check the listing for details. 50Pack M5x0.8mm(DxL) Hex Nuts Carbon Steel Oxide Coating Hexagonal Nuts Black. Condition: New. Listed at 10.58 USD. Product Details:Color: BlackMaterial: Carbon SteelScrew Size: M5x0.8mm(D*P)Width Across Flats: 8mm/0.31"Height: 4.5mm/0.18"Package Content: 50pcs x Hex NutsMaterial - Made of carbon steel material with oxide coating, these hex nuts are tough, non-rusting, non-oxidizing, and have good corrosion and heat resistance.Feature - The hex nut is designed with six sides for maximum torque and easy grip. Used with washers and bolts to prevent loosening and movement of mounting parts.Application - The hexagon nut is used for machinery industry, home furniture repair, equipment, garages, cars, metal shelves, art and craft work, etc.Install Steps - Easy to install, needs to be tightened with a wrench so that the two parts of the nut and bolt are joined together. Make sure to properly tighten (don't over-tighten) the hex nuts so they don't come off.