1/2"-13 × 3" Carriage Bolt – Grade 8, Plain Finish

Engineered for applications requiring extended fastening length and high structural strength, the 1/2"-13 × 3" Grade 8 carriage bolt delivers dependable performance in demanding assemblies. The smooth, rounded head provides a clean exterior appearance and even load distribution, while the square neck is designed to bite into wood or metal to prevent rotation during tightening. Manufactured from heat‑treated alloy steel, this Grade 8 fastener offers excellent tensile strength for load‑bearing and high‑stress use. The plain, uncoated finish is well suited for controlled environments or installations where surface coatings are not required. Commonly used in machinery frames, equipment mounts, fixtures, and structural connections requiring secure, longer‑reach fastening.