High Quality - M6 flat head screws are made of high quality galvanized carbon steel. Carbon steel is a material widely used in hardware, for a long life Safety - Our M6 flat head screws adopt high quality material, environmental protection and non-toxic. In the process of use there are no toxic substances to be released Precise Threading - The thread is very precise and clean. It can make your job easier. Our screws and nuts comply with the standardized metric system Wide Application - M6 screws and nuts are ideal for professionals and DIY enthusiasts. They also work well for 3D printed projects. It is perfect for replacing lost and lost. Can be used on sheet metal and wood. 6 popular sizes for your choice: 40mm, 60mm, 80mm, 90mm, 100mm With a sharp, clean and precise wire, it will not warp or slip easily during the rolling process. Cylindrical furniture bolts and nuts are a type of fastener that has a barrel-shaped flange and a protruding nut that is threaded on the inside. The nut