5/8"-11 × 5" Carriage Bolt – Grade 8, Plain Finish

Built for extended‑length fastening in high‑load applications, the 5/8"-11 × 5" Grade 8 carriage bolt delivers exceptional strength and long‑term reliability in demanding structural environments. The smooth, rounded head provides a clean exterior profile, while the square neck is designed to lock securely into wood or metal to prevent rotation during tightening. Manufactured from heat‑treated alloy steel, this Grade 8 fastener offers high tensile strength suitable for heavy‑duty, load‑bearing assemblies. The plain, uncoated finish is ideal for controlled environments or applications where surface coatings are not required. Common uses include machinery frames, equipment mounts, structural supports, and industrial fixtures requiring long‑reach, high‑strength fastening.