- Hex head, female threaded inside.- Made of nylon, good toughness, anti-corrosion, anti-aging, suitable for indoor, outdoor or humid environment.- Used in conjunction with a mating bolt to fasten two or more parts together.- Hex nut tightens from the side with a wrench, enabling use when there is limited space above the nut.- Suitable for door handles, machinery industry and other small repairs around the shop, garage or home furniture fastener etc. Specification:Material: NylonStandard: MetricThread Type: CoarseThread diameter: M2.5thread pitch: 0.45mmHex Width: 5mm / 0.2"Height: 2mm / 0.08" Package Content: 20 x Hex Nuts