General description The 500 Pieces Screws Bolts and Nuts assortment kit includes M3, M4, and M5 hexagon socket cap screws and button screws with hex head nuts. Made from high-quality carbon steel, these components are strong, durable, and designed for precision. Technical specifications Material: Carbon steel Color: Black Sizes: M3, M4, M5 Quantity: 500 pieces Box contents: M3*8 - 30 pieces M3*12 - 30 pieces M3*16 - 30 pieces M3*20 - 30 pieces M3 nuts - 120 pieces M4*8 - 20 pieces M4*12 - 20 pieces M4*16 - 20 pieces M4*20 - 20 pieces M4 nuts - 80 pieces M5*8 - 15 pieces M5*12 - 15 pieces M5*16 - 10 pieces M5*20 - 10 pieces M5 nuts - 50 pieces Usage Suitable for various applications including furniture repair, shipbuilding, machine building, vehicle manufacturing, and construction. Other information Please check the size carefully before purchasing. Products contain small parts; keep away from children to avoid any accidental ingestion. If you have any questions about the use of the