645Pcs M4 Metric Bolts and Nuts Assortment Kit ? Stainless Steel, Hex Socket Head Cap Screws, Washers, Hex Wrenches ? Organized Storage Case ? Package Includes Complete 645-piece set of M4 hex socket head cap screws, matching nuts, washers, and hex wrenches ? all neatly organized in a durable, reusable storage box. Perfect for a wide range of repairs and projects. ?? High-Quality Material Crafted from premium 304 stainless steel, these machine screws offer excellent durability, corrosion resistance, and anti-rust performance even in demanding environments. Please note: 304 stainless steel has mild magnetic properties due to its structure. ?? Multi-Purpose Use Ideal for: Furniture assembly (beds, cabinets, tables) DIY and home repair Office and home appliances Mechanical equipment Woodworking and ship assembly This kit provides reliable fastening for both professionals and hobbyists. ? Smart Storage Easy Access Each size and type of fastener is sorted in a sturdy compartmentalized case ? no more digging around for the right size! Stay organized and save time on every project.