5/8"-11 × 4‑1/2" Carriage Bolt – Grade 8, Plain Finish

Designed for long‑reach, high‑load fastening applications, the 5/8"-11 × 4‑1/2" Grade 8 carriage bolt delivers exceptional strength and secure performance in demanding environments. The smooth, domed head provides a clean finished appearance and even load distribution, while the square neck is engineered to embed firmly into wood or metal to prevent rotation during installation. Manufactured from heat‑treated alloy steel, this Grade 8 fastener offers superior tensile strength suitable for heavy‑duty and load‑bearing assemblies. The plain, uncoated finish is ideal for controlled environments or applications where surface coatings are not required. Commonly used in machinery frames, structural supports, equipment mounts, and industrial fixtures requiring extended fastening depth and dependable clamping force.