300Pcs Flange Bolt Kit M6-M10 Hex Bolts Nuts Washers Black Alloy Steel Class 10.9 12-30mm Heavy Duty Auto Repair

  1. All-in-One Size CoverageIncludes M6, M8, and M10 diameters with lengths from 12 mm to 30 mm – 300 pieces total. One kit handles most automotive and mechanical fastening needs, saving you multiple trips for extra parts.2. Grade 10.9 High StrengthManufactured from heat‑treated alloy steel, these fasteners meet Class 10.9 standards. They deliver superior tensile and shear strength, making them reliable for engine mounts, suspension, and other heavy‑load applications.3. Built‑in Flange for Anti‑LooseningThe integrated flange design acts as a built‑in washer, distributing load evenly and preventing self‑loosening from vibration. No extra washers required – faster installation and a more secure hold.4. Black Oxide Finish for DurabilityThe black oxide coating provides excellent resistance to oil, grease, and mild corrosion. It also gives a professional look while extending the service life of the bolts in harsh workshop environments.5. Great Value Bulk PackWith 300 pieces in a single set, this kit offers exceptional cost‑effectiveness. Whether you run a repair shop or enjoy DIY projects, you’ll have a long‑lasting supply that reduces reordering frequency and keeps your workspace stocked.
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