High quality materials - The screw kit is made of nylon, which is acid-, alkali-resistant, insulation, anti-signal interference, heat insulation, wear-resistant and waterproof. corrosion. Easy to use - The range of threaded screws includes several common metric sizes, well made, the threads are very clean, there are no sharp edges and very convenient to use. 13 Types - Including 60 nuts, 20 hex washers, 60 screws, 60 washers, 60 M3 nuts, complete specifications and sizes, which can meet your different needs. Boxed design - All screws are arranged in a transparent PP small parts box. The sorting is reasonable, the location is excellent and the overview is unobstructed. You can store and carry these small screws conveniently. Applicability - Very suitable for installation between the circuit board and the machine board. Specification: Material: nylon Color: black Size: please refer to the chart sizes for detailed size Weight: 110 grams Include: 60 x M3 nut 20 x M3 hexagonal washer 20 x M3x6mm screw 20 x M3x12mm screw 20 x M3x20mm screw 15 x Female joint M3 6mm 15 x M3 10mm female gasket 15 x M3 15mm female and female gasket 15 x M3 20mm female washer 15 x M3 sealed male and female (6 mm + 6 mm) 15 x M3 sealed male and female (10 mm + 6 mm) 15 x M3 sealed male and female ( 15mm + 6