Material: the hexagon socket nut is made of color galvanized carbon steel, high hardness, not easy to deform, corrosion resistance, good fastening effect, and can be screwed easily. Features: The nut has high strength and impact resistance, and is more stable when connecting with wooden furniture, effectively prevents loosening, and can be firmly fixed for a long time. Safety tips: drop some wood glue into the hole (on the side wall), insert and rotate the nut several times, apply glue to the threads of the nut, then fully tighten the nut so that it is flush with the wood. Flat and as dry as possible. Scope: Suitable for soft wood such as pine, plywood, fiberboard etc. (a small hole needs to be drilled before installation). Product Information: Product Name: Hex Socket Head Cap Screw Material: Iron Surface Treatment: Galvanized Head Type: Hex Head You will get: M4*8 \/30pcs M4* 10\/60pcs M5*10\/45pcs M6*8 \/18pcs M6*10\/32pcs M6*13\/13pcs M6*15\/12pcs M8*15\/ 10pcs M8*20\/5pcs M10*15\/3pcs M10*25\/2pcs Installation Notes: Need to drill a small hole of suitable size with an electric drill, Use a hex wrench to screw it into the hole, Then add 2-3mm of wood glue to the hole (on the side wall). Insert the nut and turn it a few times , Then put 2-3 mm of glue on the thread of the nut, Then turn the nut 180 degrees, Please tighten the nut completely, After that, the nut does not loosen and is firmly connected to the wood. Note: The depth of the pre-drilled hole should be deep to the length of the inserted nut and the bolt can be turned beyond the teacher wave from any part of the end of the nut.