12.9 Grade Iron Nickel-Plated High-Strength Hex Socket Head Screws/Bolts M3M4M5M6

These high-strength hex socket head screws and bolts are crafted from durable iron and feature a nickel plating for enhanced corrosion resistance. Designed with a 12.9 grade rating, they ensure exceptional strength and reliability for demanding applications. Available in sizes M3, M4, M5, and M6, these fasteners are ideal for a variety of industrial and mechanical projects, providing secure fastening and long-lasting performance. Head shape: Cylindrical head Product Grade: A-level Standard No.: GB/T 70-1985 Nail Type: Screws Manufacture country: China Instructions included: No