【Military-Grade Strength & Anti-Corrosion】： Precision-engineered Grade 10.9 Carbon Steel (Tested 1000MPa Tensile Strength) with Black Oxide Protection – Delivers higher resistance to rust than standard zinc plating based on 72-hour salt spray testing (ASTM B117 protocol). Built to withstand exposure to grease, moisture, and workshop conditions.
【Precision Sizing for 99% Applications】： Metric Screw Kit with 4 Sizes (M2/M3/M4/M5) + 5 Lengths (4/6/8/12/16mm) including Flat Washers, Spring Lock Washers and Hex Nuts. Designed to fit standard mounting holes in circuit boards, motors, and furniture – Streamline your repair workflow with compatible hardware.
【2404PCS LIFETIME SUPPLY – Organize Like a Pro】：Comprehensive Grade 10.9 bolt set suits numerous repair needs. Color-coded compartment case enables quick identification of hardware – Designed for faster retrieval compared to loose storage methods. 2404 dedicated slots help maintain organization.
【Flush-Fit Hex Heads + Free Tools Included】：Hex Button Head Cap Screws designed for clean flush mounting and efficient torque transfer. Includes 2-Piece Professional-Grade Hex Key Set made of hardened CR-V steel – Engineered to resist slipping and stripping during installation.
【Significant Cost Efficiency – Trusted by Professionals】：High-value black oxide screw kit reduces hardware expenses by consolidating purchases. One comprehensive set supports frequent repairs across electronics, bicycles, furniture, DIY tasks, timepieces, and household appliances – A practical solution for workshop settings.
Size: M2 M3 M4 M5 2404pcs B
Color: 2404Pcs M2 M3 M4 M5 Black Hex Button Head
Material: Alloy Steel
Item dimensions L x W x H: 7.87 x 5.31 x 1.5 inches
