Black & Silver Hex Socket Head Screws Bolts Nuts and Flat Washer Assortment Kit(

The sizes of the screw bolts nuts and washers assortment kit: It's contain 4 series (M2 M3 M4 M5) screw nut and bolt and flat washer. Each series has 4 lengths of screw bolts. It's M2x8mm,12mm, 16mm, 20mm; M3x8mm, 12mm, 16mm, 20mm; M4x8mm, 12mm, 16mm, 20mm; M5x8mm, 12mm,16mm, 20mm. Also comes with 4 wrenches (allen key). The specifications of the nut and bolt set: Screw head style is hex socket cap so the drive type is also hexagon socket. The hex screw pitch: 0.4mm/ 0.5mm/ 0.7mm/ 0.8mm. Hexagonal socket depth: 1mm, 1.3mm, 2mm, 2.5mm. Screw head height: 2mm, 3mm, 4mm, 5mm. All screw bolts come with nuts and washers. M2 M3 M4 M5 nuts and bolts and washers are made of 100% Stainless Steel 304 with a high level of chemical and corrosion resistance to ensure lifetime use. These premium assorted screws are versatile and commonly used in machine assembly of removable panels and parts. Widely used in the home and office appliance, communication equipment, 3D printer parts and other machi