Features 1、Various Parts: This fastener assortments including flat head hex socket screws, hex nuts and washers in various sizes for your working needs. 2、Firmer Fixing: Clear thread ensures firm fixing without slipping, while the sturdy structure can withstand high pressure, safe and reliable. 3、Wide in Using: Widely used in various accuracy machinery, sorting instruments, meters, electronic products, household appliances and so on. 4、Good Material: Using premium carbon steel material with high strength, which also has excellent durability under high and low temperature. 5、Easy to Install: Light weight together with compact size will bring more convenience to the installation, saving the time and labour. Specification Item Type: Screw Nut Washer Assortment Product Material: Carbon Steel Product Specification: Approx. 50Pcs M5 Nut 60Pcs M5 Washer 10Pcs M5 x 20mm / 0.79in Screw 10Pcs M5 x 16mm / 0.63in Screw 15Pcs M5 x 12mm / 0.47in Screw 15Pcs M5 x 8mm / 0.31in Screw 90Pcs M4 Nut 90Pcs M4 Washer 20Pcs M4 x 20mm / 0.79in Screw 20Pcs M4 x 16mm / 0.63in Screw 20Pcs M4 x 12mm / 0.47in Screw 20Pcs M4 x 8mm / 0.31in Screw 140Pcs M3 Nut 140Pcs M3 Washer 30Pcs M3 x 20mm / 0.79in Screw 30Pcs M3 x 16mm / 0.63in Screw 30Pcs M3 x 12mm / 0.47in Screw 30Pcs M8 x 8mm / 0.31in Screw 140Pcs M2 Nut 140Pcs M2 Washer 30Pcs M2 x 20mm / 0.79in Screw 30Pcs M2 x 16mm / 0.63in Screw 30Pcs M2 x 12mm / 0.47in Screw 30Pcs M2 x 8mm / 0.31in Screw Package List 420 x Nut 430 x Washer 370 x Screw 1 x Storage Box