Description: A nut is a type of fastener with a threaded hole. Nuts are almost always used in conjunction with a mating bolt to fasten two or more parts together. The two partners are kept together by a combination of their threads' friction, a slight stretching of the bolt, and compression of the parts to be held together. Features: 1. These hex nuts are made of environment-friendly nylon, which is of good acid and alkali resistance, and it also features with insulation property and anti interference of signals. 2. Hexagonal shape has 6 sides that gives a good granularity of angles for a tool to approach from. 3. There are seven common size of hexagonal nut that you can choose for general purpose use. 4. These hex nuts will be great replacement for industrial and construction fasteners. 5. Used widely in the home and office appliance, communication equipment, ship assembly and other machinery industry. Specifications: Material: Nylon Material Class: PA66 environment-friendly nylon Color: White Operating Temperature: -20 ~ +120 Flammability Standard: 94-V2 Item Quantity: 100pcs Size: M2, M2.5, M3, M4, M5, M6, M8(optional) Package Weight: 5-76g Package Included: 100 x Nylon Hex Nuts