Specification：Furniture Screws and Nuts is a type of fastener used for making mechanical connections between mating objects.They are widely used in Industrial manufacturing, Daily life, etc. These have good chemical resistance and may be mildly magnetic. Length is measured from under the head. Match the thread spacing of mating components. Coarse threads are the industry standard; Fine and extra-fine threads are closely spaced to prevent loosening from vibration; the finer the thread, the better the resistance. There are all kind of sizes and specifications we can supply,welcome to consult.