✔️ Ultimate Metric Bolt Kit for Automotive & Industrial Use - 750+ piece hardware assortment includes M6, M8, M10, M12 yellow zinc plated flange bolts (12mm-50mm lengths), hex nuts, flat washers, spring washers – replace stripped engine bolts or build machinery fast!
✔️ Vibration-Proof Flange Head Design – Serrated lock bolt flange bites metal surfaces, eliminating rattling noise in off-road vehicles, HVAC systems, and marine equipment repairs.
✔️ Heavy-Duty Class 10.9 Strength – 20MnTiB bolts( M6 is 10B21) heat-treated to 1040MPa tensile strength, exceeding ANSI/ISO standards for suspension systems, structural steel connections, and tractor attachments.
✔️ Corrosion-Resistant Yellow Zinc Finish – Rust-proof coating withstands salt spray, ideal for outdoor construction, solar mounting racks, and high-moisture environments.
✔️ Organized Bolt Storage Case – Pre-sorted compartment toolbox saves 80% search time during emergency auto fixes, factory maintenance, or DIY metal projects.
✔️ High-Temperature & High-Pressure Environments – Spring Washers Not Recommended - Use Flange Bolts with Gear Nuts & Flat Washers