Check the listing for details. 30 Set M3x10mm Nylon Round Head Bolts Hex Nuts Washer Combination Kit, White. Condition: New. Listed at 13.99 USD. What is this?This nylon round bolts and nuts kit is suitable for a variety of mechanical fastening purposes and DIY projects. Due to the good insulation of nylon, these bolt sets will not interfere with electronic device signals and can be used in humid, alkaline and acidic environments, widely used in all kinds of precision machinery, classified instruments, instruments, electronic products, household appliances, fasten PCB board, controller board building, flight stack building, lights, etc.What will I get?Color: WhiteMaterial: Nylon PA66Thread Size: M3 x 0.5Bolt Thread Length: 10mm/0.39 inchRound Head Size: 5.6x2.5mm/0.22x0.1 inch (D*T)Hex Nut Size: 5.6x2.4mm/0.22x0.09 inch (W*T)Flat Washer Size: 3x7x1mm/0.12x0.28x0.