380 Pcs M3 Black Flat Head Machine Screws and Hex Nuts Kit Carbon Steel Countersunk Head Phillips Screws Bolts Assortment,M3 x 4mm/ 6mm/ 8mm/ 10mm/ 12mm/ 16mm/ 20mm

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• Premium Carbon Steel Construction: These Flat Head Machine Screws and Hex Nuts Kit are crafted from high-quality carbon steel, offering superior strength, corrosion resistance, and durability. The smooth, burr-free surface ensures effortless installation without breakage or deformation.
• Precision Black Countersunk Head Phillips Screws: Featuring accurately threaded Black Countersunk Head Phillips Screws, these bolts provide a secure, non-slip fit. The flat head design sits flush for a clean finish, while the hex nuts ensure tight fastening and reduced stress on components.
• Convenient Storage & Organization: The Hex Nuts Kit and screws come neatly organized in a sturdy, compartmentalized storage box. Each size is separated for easy access, preventing mix-ups and making transportation or workspace tidy.
• Versatile Usage Across Industries: Ideal for DIY projects, electronics, machinery, automotive, and more, these Flat Head Machine Screws suit home, industrial, and professional applications—ensuring reliable fastening in diverse scenarios.
• Complete 380-Piece Assortment: Includes 230 screws (M3 x 4mm–20mm) and 150 hex nuts, offering ample quantities and varied sizes to handle repairs, assemblies, and upgrades with ease.