550pcs M3 Metric Screw Nut Assortment Kit ? Button Head Socket Cap Bolts, Carbon Steel, Washers, Hex Wrenches ? Organized Storage Case ? What?s Included This comprehensive 550-piece kit includes: M3 Button Head Socket Cap Screws (various lengths) Matching Nuts, Washers, and Hex Wrenches All parts organized in a sturdy, reusable storage case Ideal for precision work, small machines, DIY builds, and repairs. ?? Material Durability Made from Grade 10.9 carbon steel with a black oxide finish, these fasteners provide: High strength durability Excellent wear resistance Moderate corrosion protection Note: Carbon steel exhibits weak magnetic properties due to structural characteristics. ? Versatile Applications Perfect for: Electronics communication equipment Home office appliances Furniture assembly (beds, cabinets, tables) Garage shop repairs DIY, woodworking, marine mechanical projects Whether you're a pro or hobbyist, this kit delivers reliable fastening every time. ? Organized Ready to Use All components are clearly sorted and labeled in individual compartments, making it easy to grab the right part when you need it. No more lost or mixed-up pieces!