Product Title: M6 Stainless Steel Flanged Hex Head Bolts Kit 20mm – 304 A2-70 Grade, 50PCS – Rustproof Fasteners for DIY, Automotive & Industrial Use Key Features (Bullet Points): ✅ Complete Metric Kit: Includes 50 flanged hex bolts in 4 sizes – M6×20mm – ideal for diverse projects requiring durable, corrosion-resistant fasteners. ✅ 304 Stainless Steel: Built to last with A2-70 strength, superior rust & chemical resistance, and slight magnetism for reliable performance in harsh environments. ✅ Anti-Loose Flange Design: Integrated serrated flange increases grip and distributes pressure evenly, minimizing vibration-induced loosening for secure, long-term fastening. ✅ Wide Compatibility: Precision metric threading and standard hex heads fit most wrenches (sold separately). Perfect for machinery, automotive repairs, marine equipment, home DIY, and industrial maintenance. ✅ Convenient Storage: Packaged in a reusable transparent case for easy organization, quick access, and portable toolkits. Product Description: Upgrade your toolkit with this premium 50-piece M8 stainless steel flanged hex head bolt set, engineered for durability and versatility. Crafted from 304-grade stainless steel, these bolts withstand corrosion, chemicals, and wear, making them ideal for indoor/outdoor use in humid, high-stress, or temperature-variable conditions. The A2-70 strength rating ensures they meet industrial standards for heavy-duty applications, while the flanged serrated design enhances stability by expanding the contact surface. This reduces the risk of loosening under vibration, securing joints in automotive parts, machinery, furniture, or marine fixtures. Each bolt features a standard hexagonal head for compatibility with most hex keys or wrenches, simplifying installation. The set's four lengths (16mm, 20mm, 25mm, 30mm) and clear case make it a go-to solution for professionals and DIYers tackling repairs, renovations, or custom builds.