5/8"‑11 × 2‑1/4" Grade 8 Dome Head Plow Bolt No. 3 – 150,000 PSI, Plain Finish

The 5/8"‑11 × 2‑1/4" Grade 8 dome head plow bolt (No. 3) is designed for extreme‑duty applications where maximum strength and a smooth, low‑profile head are essential. Manufactured to Grade 8 specifications with a minimum tensile strength of 150,000 PSI, this fastener features a rounded dome head and square neck to prevent rotation during installation. Supplied with a plain (uncoated) finish, it is ideal for plow blades, grader edges, heavy equipment, and earth‑moving machinery where high shear strength, durability, and flush mounting are critical.